fix: correct array deletion and improve state management in WGC screen capturer

[fix] fix system_chinese_font_ usage to avoid dangling font pointer after closing stream window
[fix] update RecentConnectionsWindow layout
2025-12-17 04:26:47 +08:00 · 2025-12-01 23:06:46 +08:00 · 2025-12-01 23:03:45 +08:00 · 2025-12-01 17:16:28 +08:00 · 2025-12-01 13:52:39 +08:00 · 2025-12-01 13:07:36 +08:00
40 changed files with 2621 additions and 1276 deletions
--- a/.github/ISSUE_TEMPLATE/问题反馈.md
+++ b/.github/ISSUE_TEMPLATE/问题反馈.md
@@ -0,0 +1,35 @@
+---
+name: 问题反馈
+about: Create a report to help us improve
+title: ''
+labels: bug
+assignees: kunkundi
+
+---
+
+**描述问题**
+清晰简洁地描述遇到的错误。
+
+**复现步骤**
+复现该问题的步骤：
+1. 前往 '...'
+2. 点击 '....'
+3. 出现错误
+
+**预期行为**
+清晰简洁地描述你期望发生的行为。
+
+**截图**
+如果适用，请添加截图以帮助说明问题。
+
+**桌面端信息（请填写以下内容）：**
+ - 操作系统: [例如 Windows 11]
+ - 版本: [例如 v1.1.10]
+
+**移动端信息（请填写以下内容）：**
+ - 设备: [例如 iPhone 17]
+ - 操作系统: [例如 iOS 26.1]
+ - 浏览器: [例如 系统浏览器、Safari]
+
+**补充信息**
+在此添加与问题相关的其他上下文内容。
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -408,6 +408,9 @@ jobs:
          {
            "version": "${{ steps.version.outputs.VERSION_ONLY }}",
            "releaseDate": "${{ steps.version.outputs.BUILD_DATE_ISO }}",
+            "releaseName": "",
+            "releaseNotes": "",
+            "tagName": "${{ steps.version.outputs.VERSION_WITH_V }}",
            "downloads": {
              "windows-x64": {
                "url": "https://downloads.crossdesk.cn/crossdesk-win-x64-${{ steps.version.outputs.VERSION_WITH_V }}.exe",
--- a/.github/workflows/update-version-json.yml
+++ b/.github/workflows/update-version-json.yml
@@ -0,0 +1,140 @@
+name: Update version.json from Release
+
+on:
+  release:
+    types: [published, edited]
+
+permissions:
+  contents: write
+
+jobs:
+  update-version-json:
+    name: Update version.json with release information
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract version from tag
+        id: version
+        run: |
+          TAG_NAME="${{ github.event.release.tag_name }}"
+          VERSION_ONLY="${TAG_NAME#v}"
+          echo "TAG_NAME=${TAG_NAME}" >> $GITHUB_OUTPUT
+          echo "VERSION_ONLY=${VERSION_ONLY}" >> $GITHUB_OUTPUT
+          
+          # Extract date from tag if available (format: v1.2.3-20251113-abc)
+          if [[ "${TAG_NAME}" =~ -([0-9]{8})- ]]; then
+            DATE_STR="${BASH_REMATCH[1]}"
+            BUILD_DATE_ISO="${DATE_STR:0:4}-${DATE_STR:4:2}-${DATE_STR:6:2}"
+          else
+            # Use release published date
+            BUILD_DATE_ISO=$(echo "${{ github.event.release.published_at }}" | cut -d'T' -f1)
+          fi
+          echo "BUILD_DATE_ISO=${BUILD_DATE_ISO}" >> $GITHUB_OUTPUT
+
+      - name: Install jq
+        run: sudo apt-get update && sudo apt-get install -y jq
+
+      - name: Get release information
+        id: release_info
+        run: |
+          # Use jq to properly escape JSON
+          RELEASE_BODY="${{ github.event.release.body }}"
+          RELEASE_NAME="${{ github.event.release.name }}"
+          
+          # Handle empty values
+          if [ -z "$RELEASE_BODY" ]; then
+            RELEASE_BODY=""
+          fi
+          if [ -z "$RELEASE_NAME" ]; then
+            RELEASE_NAME=""
+          fi
+          
+          # Save to temporary files for proper handling
+          echo -n "$RELEASE_BODY" > /tmp/release_body.txt
+          echo -n "$RELEASE_NAME" > /tmp/release_name.txt
+          
+          # Use jq to escape JSON strings
+          RELEASE_BODY_JSON=$(jq -Rs . < /tmp/release_body.txt)
+          RELEASE_NAME_JSON=$(jq -Rs . < /tmp/release_name.txt)
+          
+          echo "RELEASE_BODY=${RELEASE_BODY_JSON}" >> $GITHUB_OUTPUT
+          echo "RELEASE_NAME=${RELEASE_NAME_JSON}" >> $GITHUB_OUTPUT
+
+      - name: Download current version.json from server
+        id: download_version
+        continue-on-error: true
+        run: |
+          # Try to download current version.json from server
+          curl -f -s "https://version.crossdesk.cn/version.json" -o version.json || echo "Failed to download, will create new one"
+
+      - name: Generate or update version.json
+        run: |
+          # If version.json exists, try to preserve downloads section
+          if [ -f version.json ] && jq -e '.downloads' version.json > /dev/null 2>&1; then
+            EXISTING_DOWNLOADS=$(jq -c '.downloads' version.json)
+            if [ "$EXISTING_DOWNLOADS" != "null" ] && [ "$EXISTING_DOWNLOADS" != "{}" ]; then
+              DOWNLOADS_JSON="$EXISTING_DOWNLOADS"
+            else
+              DOWNLOADS_JSON=""
+            fi
+          else
+            DOWNLOADS_JSON=""
+          fi
+          
+          # If downloads is empty, use default structure
+          if [ -z "$DOWNLOADS_JSON" ]; then
+            DOWNLOADS_JSON=$(cat << DOWNLOADS_EOF
+            {
+              "windows-x64": {
+                "url": "https://downloads.crossdesk.cn/crossdesk-win-x64-${{ steps.version.outputs.TAG_NAME }}.exe",
+                "filename": "crossdesk-win-x64-${{ steps.version.outputs.TAG_NAME }}.exe"
+              },
+              "macos-x64": {
+                "url": "https://downloads.crossdesk.cn/crossdesk-macos-x64-${{ steps.version.outputs.TAG_NAME }}.pkg",
+                "filename": "crossdesk-macos-x64-${{ steps.version.outputs.TAG_NAME }}.pkg"
+              },
+              "macos-arm64": {
+                "url": "https://downloads.crossdesk.cn/crossdesk-macos-arm64-${{ steps.version.outputs.TAG_NAME }}.pkg",
+                "filename": "crossdesk-macos-arm64-${{ steps.version.outputs.TAG_NAME }}.pkg"
+              },
+              "linux-amd64": {
+                "url": "https://downloads.crossdesk.cn/crossdesk-linux-amd64-${{ steps.version.outputs.TAG_NAME }}.deb",
+                "filename": "crossdesk-linux-amd64-${{ steps.version.outputs.TAG_NAME }}.deb"
+              },
+              "linux-arm64": {
+                "url": "https://downloads.crossdesk.cn/crossdesk-linux-arm64-${{ steps.version.outputs.TAG_NAME }}.deb",
+                "filename": "crossdesk-linux-arm64-${{ steps.version.outputs.TAG_NAME }}.deb"
+              }
+            }
+          DOWNLOADS_EOF
+                      )
+                    fi
+          
+          # Generate version.json using cat and heredoc
+          cat > version.json << EOF
+          {
+            "version": "${{ steps.version.outputs.VERSION_ONLY }}",
+            "releaseDate": "${{ steps.version.outputs.BUILD_DATE_ISO }}",
+            "releaseName": ${{ steps.release_info.outputs.RELEASE_NAME }},
+            "releaseNotes": ${{ steps.release_info.outputs.RELEASE_BODY }},
+            "tagName": "${{ steps.version.outputs.TAG_NAME }}",
+            "downloads": ${DOWNLOADS_JSON}
+          }
+          EOF
+          
+          cat version.json
+
+      - name: Upload version.json to server
+        uses: burnett01/rsync-deployments@5.2
+        with:
+          switches: -avzr --delete
+          path: version.json
+          remote_path: /var/www/html/version/
+          remote_host: ${{ secrets.SERVER_HOST }}
+          remote_user: ${{ secrets.SERVER_USER }}
+          remote_key: ${{ secrets.SERVER_KEY }}
--- a/.gitignore
+++ b/.gitignore
@@ -1,10 +1,10 @@
 # Xmake cache
 .xmake/
 build/
+certs/

 # MacOS Cache
 .DS_Store

 # VSCode cache
-.vscode
-continuous-desk.code-workspace
+.vscode
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 # CrossDesk

+<a href="https://hellogithub.com/repository/kunkundi/crossdesk" target="_blank"><img src="https://api.hellogithub.com/v1/widgets/recommend.svg?rid=55d41367570345f1838e02fd12be7961&claim_uid=cb0OpZRrBuGVAfL&theme=small" alt="Featured｜HelloGitHub" /></a>
 [![Platform](https://img.shields.io/badge/platform-Windows%20%7C%20Linux%20%7C%20macOS-brightgreen.svg)]()
 [![License: LGPL v3](https://img.shields.io/badge/License-LGPL%20v3-blue.svg)](https://www.gnu.org/licenses/lgpl-3.0)
 [![GitHub last commit](https://img.shields.io/github/last-commit/kunkundi/crossdesk)](https://github.com/kunkundi/crossdesk/commits/web-client)
@@ -315,10 +316,10 @@ Generation complete. Deployment files::
  Server certificate: crossdesk.cn_bundle.crt
 ```

-#### 服务端
+### 服务端
 将 **crossdesk.cn.key** 和 **crossdesk.cn_bundle.crt** 放置到 **/path/to/your/certs** 目录下。

-#### 客户端
+### 客户端
 1. 点击右上角设置进入设置页面。<br>
 <img width="600" height="210" alt="image" src="https://github.com/user-attachments/assets/6431131d-b32a-4726-8783-6788f47baa3b" /><br><br>

@@ -331,5 +332,8 @@ Generation complete. Deployment files::
 7. 勾选使用**自托管服务器配置**，点击确认配置生效。<br><br>
 <img width="600" height="160" alt="image" src="https://github.com/user-attachments/assets/1e455dc3-4087-4f37-a544-1ff9f8789383" /><br><br>

+### Web 客户端
+详情见项目 [CrossDesk Web Client](https://github.com/kunkundi/crossdesk-web-client)。
+
 # 常见问题
 见 [常见问题](https://github.com/kunkundi/crossdesk/blob/self-hosted-server/docs/FAQ.md) 。
--- a/README_EN.md
+++ b/README_EN.md
@@ -1,5 +1,6 @@
 # CrossDesk

+<a href="https://hellogithub.com/repository/kunkundi/crossdesk" target="_blank"><img src="https://api.hellogithub.com/v1/widgets/recommend.svg?rid=55d41367570345f1838e02fd12be7961&claim_uid=cb0OpZRrBuGVAfL&theme=small" alt="Featured｜HelloGitHub" /></a>
 [![Platform](https://img.shields.io/badge/platform-Windows%20%7C%20Linux%20%7C%20macOS-brightgreen.svg)]()
 [![License: LGPL v3](https://img.shields.io/badge/License-LGPL%20v3-blue.svg)](https://www.gnu.org/licenses/lgpl-3.0)
 [![GitHub last commit](https://img.shields.io/github/last-commit/kunkundi/crossdesk)](https://github.com/kunkundi/crossdesk/commits/web-client)
@@ -323,10 +324,10 @@ Generation complete. Deployment files::
  Server certificate: crossdesk.cn_bundle.crt
 ```

-#### Server Side
+### Server Side
 Place **crossdesk.cn.key** and **crossdesk.cn_bundle.crt** into the **/path/to/your/certs** directory.

-#### Client Side
+### Client Side
 1. Click the settings icon in the top-right corner to enter the settings page.<br>
 <img width="600" height="210" alt="image" src="https://github.com/user-attachments/assets/6431131d-b32a-4726-8783-6788f47baa3b" /><br><br>

@@ -339,5 +340,8 @@ Place **crossdesk.cn.key** and **crossdesk.cn_bundle.crt** into the **/path/to/y
 4. Check the option to use **Self-Hosted Server Configuration**.<br><br>
 <img width="600" height="160" alt="image" src="https://github.com/user-attachments/assets/1e455dc3-4087-4f37-a544-1ff9f8789383" /><br><br>

+### Web Client
+See [CrossDesk Web Client](https://github.com/kunkundi/crossdesk-web-client)。
+
 # FAQ
 See [FAQ](https://github.com/kunkundi/crosssesk/blob/self-hosted-server/docs/FAQ.md) .
--- a/scripts/macosx/pkg_arm64.sh
+++ b/scripts/macosx/pkg_arm64.sh
@@ -86,29 +86,66 @@ pkgbuild \
  --component "${APP_BUNDLE}" \
  build_pkg_temp/${APP_NAME}-component.pkg

-mkdir -p scripts
+mkdir -p build_pkg_scripts

-cat > scripts/postinstall <<'EOF'
+cat > build_pkg_scripts/postinstall <<'EOF'
 #!/bin/bash
+set -e
+
+IDENTIFIER="cn.crossdesk.app"
+
+# 获取当前登录用户
 USER_HOME=$( /usr/bin/stat -f "%Su" /dev/console )
 HOME_DIR=$( /usr/bin/dscl . -read /Users/$USER_HOME NFSHomeDirectory | awk '{print $2}' )

+# 复制证书文件
 DEST="$HOME_DIR/Library/Application Support/CrossDesk/certs"
-
 mkdir -p "$DEST"
 cp -R "/Library/Application Support/CrossDesk/certs/"* "$DEST/"

+# 清除应用的权限授权，以便重新授权
+# 使用 tccutil 重置录屏权限和辅助功能权限
+if command -v tccutil >/dev/null 2>&1; then
+    # 重置录屏权限
+    tccutil reset ScreenCapture "$IDENTIFIER" 2>/dev/null || true
+    # 重置辅助功能权限
+    tccutil reset Accessibility "$IDENTIFIER" 2>/dev/null || true
+    # 重置摄像头权限（如果需要）
+    tccutil reset Camera "$IDENTIFIER" 2>/dev/null || true
+    # 重置麦克风权限（如果需要）
+    tccutil reset Microphone "$IDENTIFIER" 2>/dev/null || true
+fi
+
+# 为所有用户清除权限（可选，如果需要）
+# 遍历所有用户目录并清除权限
+for USER_DIR in /Users/*; do
+    if [ -d "$USER_DIR" ] && [ "$USER_DIR" != "/Users/Shared" ]; then
+        USER_NAME=$(basename "$USER_DIR")
+        # 跳过系统用户
+        if [ "$USER_NAME" != "Shared" ] && [ -d "$USER_DIR/Library" ]; then
+            # 删除 TCC 数据库中的相关条目（需要管理员权限）
+            TCC_DB="$USER_DIR/Library/Application Support/com.apple.TCC/TCC.db"
+            if [ -f "$TCC_DB" ]; then
+                # 使用 sqlite3 删除相关权限记录（如果可用）
+                if command -v sqlite3 >/dev/null 2>&1; then
+                    sqlite3 "$TCC_DB" "DELETE FROM access WHERE client='$IDENTIFIER' AND service IN ('kTCCServiceScreenCapture', 'kTCCServiceAccessibility');" 2>/dev/null || true
+                fi
+            fi
+        fi
+    fi
+done
+
 exit 0
 EOF

-chmod +x scripts/postinstall
+chmod +x build_pkg_scripts/postinstall

 pkgbuild \
  --root "${CERTS_SOURCE}" \
  --identifier "${IDENTIFIER}.certs" \
  --version "${APP_VERSION}" \
  --install-location "/Library/Application Support/CrossDesk/certs" \
-  --scripts scripts \
+  --scripts build_pkg_scripts \
  build_pkg_temp/${APP_NAME}-certs.pkg

 productbuild \
@@ -118,7 +155,7 @@ productbuild \

 echo "PKG package created: ${PKG_NAME}"

-rm -rf build_pkg_temp scripts ${APP_BUNDLE}
+rm -rf build_pkg_temp build_pkg_scripts ${APP_BUNDLE}

 echo "PKG package created successfully."
 echo "package ${APP_BUNDLE}"
--- a/scripts/macosx/pkg_x64.sh
+++ b/scripts/macosx/pkg_x64.sh
@@ -86,29 +86,66 @@ pkgbuild \
  --component "${APP_BUNDLE}" \
  build_pkg_temp/${APP_NAME}-component.pkg

-mkdir -p scripts
+mkdir -p build_pkg_scripts

-cat > scripts/postinstall <<'EOF'
+cat > build_pkg_scripts/postinstall <<'EOF'
 #!/bin/bash
+set -e
+
+IDENTIFIER="cn.crossdesk.app"
+
+# 获取当前登录用户
 USER_HOME=$( /usr/bin/stat -f "%Su" /dev/console )
 HOME_DIR=$( /usr/bin/dscl . -read /Users/$USER_HOME NFSHomeDirectory | awk '{print $2}' )

+# 复制证书文件
 DEST="$HOME_DIR/Library/Application Support/CrossDesk/certs"
-
 mkdir -p "$DEST"
 cp -R "/Library/Application Support/CrossDesk/certs/"* "$DEST/"

+# 清除应用的权限授权，以便重新授权
+# 使用 tccutil 重置录屏权限和辅助功能权限
+if command -v tccutil >/dev/null 2>&1; then
+    # 重置录屏权限
+    tccutil reset ScreenCapture "$IDENTIFIER" 2>/dev/null || true
+    # 重置辅助功能权限
+    tccutil reset Accessibility "$IDENTIFIER" 2>/dev/null || true
+    # 重置摄像头权限（如果需要）
+    tccutil reset Camera "$IDENTIFIER" 2>/dev/null || true
+    # 重置麦克风权限（如果需要）
+    tccutil reset Microphone "$IDENTIFIER" 2>/dev/null || true
+fi
+
+# 为所有用户清除权限（可选，如果需要）
+# 遍历所有用户目录并清除权限
+for USER_DIR in /Users/*; do
+    if [ -d "$USER_DIR" ] && [ "$USER_DIR" != "/Users/Shared" ]; then
+        USER_NAME=$(basename "$USER_DIR")
+        # 跳过系统用户
+        if [ "$USER_NAME" != "Shared" ] && [ -d "$USER_DIR/Library" ]; then
+            # 删除 TCC 数据库中的相关条目（需要管理员权限）
+            TCC_DB="$USER_DIR/Library/Application Support/com.apple.TCC/TCC.db"
+            if [ -f "$TCC_DB" ]; then
+                # 使用 sqlite3 删除相关权限记录（如果可用）
+                if command -v sqlite3 >/dev/null 2>&1; then
+                    sqlite3 "$TCC_DB" "DELETE FROM access WHERE client='$IDENTIFIER' AND service IN ('kTCCServiceScreenCapture', 'kTCCServiceAccessibility');" 2>/dev/null || true
+                fi
+            fi
+        fi
+    fi
+done
+
 exit 0
 EOF

-chmod +x scripts/postinstall
+chmod +x build_pkg_scripts/postinstall

 pkgbuild \
  --root "${CERTS_SOURCE}" \
  --identifier "${IDENTIFIER}.certs" \
  --version "${APP_VERSION}" \
  --install-location "/Library/Application Support/CrossDesk/certs" \
-  --scripts scripts \
+  --scripts build_pkg_scripts \
  build_pkg_temp/${APP_NAME}-certs.pkg

 productbuild \
@@ -118,7 +155,7 @@ productbuild \

 echo "PKG package created: ${PKG_NAME}"

-rm -rf build_pkg_temp scripts ${APP_BUNDLE}
+rm -rf build_pkg_temp build_pkg_scripts ${APP_BUNDLE}

 echo "PKG package created successfully."
 echo "package ${APP_BUNDLE}"
--- a/src/gui/assets/fonts/OPPOSans_Regular.h
+++ b/src/gui/assets/fonts/OPPOSans_Regular.h
--- a/src/gui/assets/layouts/layout.h
+++ b/src/gui/assets/layouts/layout.h
@@ -7,71 +7,81 @@
 #ifndef _LAYOUT_STYLE_H_
 #define _LAYOUT_STYLE_H_

-#define MENU_WINDOW_WIDTH_CN 300
-#define MENU_WINDOW_HEIGHT_CN 280
-#define LOCAL_WINDOW_WIDTH_CN 300
-#define LOCAL_WINDOW_HEIGHT_CN 280
-#define REMOTE_WINDOW_WIDTH_CN 300
-#define REMOTE_WINDOW_HEIGHT_CN 280
-#define MENU_WINDOW_WIDTH_EN 190
-#define MENU_WINDOW_HEIGHT_EN 245
-#define IPUT_WINDOW_WIDTH 160
-#define INPUT_WINDOW_PADDING_CN 66
-#define INPUT_WINDOW_PADDING_EN 96
-#define SETTINGS_WINDOW_WIDTH_CN 202
-#define SETTINGS_WINDOW_WIDTH_EN 248
+#include "render.h"
+
+#define MENU_WINDOW_WIDTH_CN 300 * dpi_scale_
+#define MENU_WINDOW_HEIGHT_CN 280 * dpi_scale_
+#define LOCAL_WINDOW_WIDTH_CN 300 * dpi_scale_
+#define LOCAL_WINDOW_HEIGHT_CN 280 * dpi_scale_
+#define REMOTE_WINDOW_WIDTH_CN 300 * dpi_scale_
+#define REMOTE_WINDOW_HEIGHT_CN 280 * dpi_scale_
+#define MENU_WINDOW_WIDTH_EN 190 * dpi_scale_
+#define MENU_WINDOW_HEIGHT_EN 245 * dpi_scale_
+#define IPUT_WINDOW_WIDTH 160 * dpi_scale_
+#define INPUT_WINDOW_PADDING_CN 66 * dpi_scale_
+#define INPUT_WINDOW_PADDING_EN 96 * dpi_scale_
+#define SETTINGS_WINDOW_WIDTH_CN 202 * dpi_scale_
+#define SETTINGS_WINDOW_WIDTH_EN 248 * dpi_scale_
 #if USE_CUDA
 #if _WIN32
-#define SETTINGS_WINDOW_HEIGHT_CN 405
-#define SETTINGS_WINDOW_HEIGHT_EN 405
+#define SETTINGS_WINDOW_HEIGHT_CN 405 * dpi_scale_
+#define SETTINGS_WINDOW_HEIGHT_EN 405 * dpi_scale_
 #else
-#define SETTINGS_WINDOW_HEIGHT_CN 375
-#define SETTINGS_WINDOW_HEIGHT_EN 375
+#define SETTINGS_WINDOW_HEIGHT_CN 375 * dpi_scale_
+#define SETTINGS_WINDOW_HEIGHT_EN 375 * dpi_scale_
 #endif
 #else
 #if _WIN32
-#define SETTINGS_WINDOW_HEIGHT_CN 375
-#define SETTINGS_WINDOW_HEIGHT_EN 375
+#define SETTINGS_WINDOW_HEIGHT_CN 375 * dpi_scale_
+#define SETTINGS_WINDOW_HEIGHT_EN 375 * dpi_scale_
 #else
-#define SETTINGS_WINDOW_HEIGHT_CN 345
-#define SETTINGS_WINDOW_HEIGHT_EN 345
+#define SETTINGS_WINDOW_HEIGHT_CN 345 * dpi_scale_
+#define SETTINGS_WINDOW_HEIGHT_EN 345 * dpi_scale_
 #endif
 #endif
-#define SELF_HOSTED_SERVER_CONFIG_WINDOW_WIDTH_CN 228
-#define SELF_HOSTED_SERVER_CONFIG_WINDOW_WIDTH_EN 275
-#define SELF_HOSTED_SERVER_CONFIG_WINDOW_HEIGHT_CN 195
-#define SELF_HOSTED_SERVER_CONFIG_WINDOW_HEIGHT_EN 195
-#define LANGUAGE_SELECT_WINDOW_PADDING_CN 120
-#define LANGUAGE_SELECT_WINDOW_PADDING_EN 167
-#define VIDEO_QUALITY_SELECT_WINDOW_PADDING_CN 120
-#define VIDEO_QUALITY_SELECT_WINDOW_PADDING_EN 167
-#define VIDEO_FRAME_RATE_SELECT_WINDOW_PADDING_CN 120
-#define VIDEO_FRAME_RATE_SELECT_WINDOW_PADDING_EN 167
-#define VIDEO_ENCODE_FORMAT_SELECT_WINDOW_PADDING_CN 120
-#define VIDEO_ENCODE_FORMAT_SELECT_WINDOW_PADDING_EN 167
-#define ENABLE_HARDWARE_VIDEO_CODEC_CHECKBOX_PADDING_CN 171
-#define ENABLE_HARDWARE_VIDEO_CODEC_CHECKBOX_PADDING_EN 218
-#define ENABLE_TURN_CHECKBOX_PADDING_CN 171
-#define ENABLE_TURN_CHECKBOX_PADDING_EN 218
-#define ENABLE_SRTP_CHECKBOX_PADDING_CN 171
-#define ENABLE_SRTP_CHECKBOX_PADDING_EN 218
-#define ENABLE_SELF_HOSTED_SERVER_CHECKBOX_PADDING_CN 171
-#define ENABLE_SELF_HOSTED_SERVER_CHECKBOX_PADDING_EN 218
-#define ENABLE_AUTOSTART_PADDING_CN 171
-#define ENABLE_AUTOSTART_PADDING_EN 218
-#define ENABLE_DAEMON_PADDING_CN 171
-#define ENABLE_DAEMON_PADDING_EN 218
-#define ENABLE_MINIZE_TO_TRAY_PADDING_CN 171
-#define ENABLE_MINIZE_TO_TRAY_PADDING_EN 218
-#define SELF_HOSTED_SERVER_HOST_INPUT_BOX_PADDING_CN 90
-#define SELF_HOSTED_SERVER_HOST_INPUT_BOX_PADDING_EN 137
-#define SELF_HOSTED_SERVER_PORT_INPUT_BOX_PADDING_CN 90
-#define SELF_HOSTED_SERVER_PORT_INPUT_BOX_PADDING_EN 137
-#define SETTINGS_SELECT_WINDOW_WIDTH 73
-#define SELF_HOSTED_SERVER_INPUT_WINDOW_WIDTH 130
-#define SETTINGS_OK_BUTTON_PADDING_CN 65
-#define SETTINGS_OK_BUTTON_PADDING_EN 83
-#define SELF_HOSTED_SERVER_CONFIG_OK_BUTTON_PADDING_CN 78
-#define SELF_HOSTED_SERVER_CONFIG_OK_BUTTON_PADDING_EN 91
-
+#define SELF_HOSTED_SERVER_CONFIG_WINDOW_WIDTH_CN 228 * dpi_scale_
+#define SELF_HOSTED_SERVER_CONFIG_WINDOW_WIDTH_EN 275 * dpi_scale_
+#define SELF_HOSTED_SERVER_CONFIG_WINDOW_HEIGHT_CN 195 * dpi_scale_
+#define SELF_HOSTED_SERVER_CONFIG_WINDOW_HEIGHT_EN 195 * dpi_scale_
+#define LANGUAGE_SELECT_WINDOW_PADDING_CN 120 * dpi_scale_
+#define LANGUAGE_SELECT_WINDOW_PADDING_EN 167 * dpi_scale_
+#define VIDEO_QUALITY_SELECT_WINDOW_PADDING_CN 120 * dpi_scale_
+#define VIDEO_QUALITY_SELECT_WINDOW_PADDING_EN 167 * dpi_scale_
+#define VIDEO_FRAME_RATE_SELECT_WINDOW_PADDING_CN 120 * dpi_scale_
+#define VIDEO_FRAME_RATE_SELECT_WINDOW_PADDING_EN 167 * dpi_scale_
+#define VIDEO_ENCODE_FORMAT_SELECT_WINDOW_PADDING_CN 120 * dpi_scale_
+#define VIDEO_ENCODE_FORMAT_SELECT_WINDOW_PADDING_EN 167 * dpi_scale_
+#define ENABLE_HARDWARE_VIDEO_CODEC_CHECKBOX_PADDING_CN 171 * dpi_scale_
+#define ENABLE_HARDWARE_VIDEO_CODEC_CHECKBOX_PADDING_EN 218 * dpi_scale_
+#define ENABLE_TURN_CHECKBOX_PADDING_CN 171 * dpi_scale_
+#define ENABLE_TURN_CHECKBOX_PADDING_EN 218 * dpi_scale_
+#define ENABLE_SRTP_CHECKBOX_PADDING_CN 171 * dpi_scale_
+#define ENABLE_SRTP_CHECKBOX_PADDING_EN 218 * dpi_scale_
+#define ENABLE_SELF_HOSTED_SERVER_CHECKBOX_PADDING_CN 171 * dpi_scale_
+#define ENABLE_SELF_HOSTED_SERVER_CHECKBOX_PADDING_EN 218 * dpi_scale_
+#define ENABLE_AUTOSTART_PADDING_CN 171 * dpi_scale_
+#define ENABLE_AUTOSTART_PADDING_EN 218 * dpi_scale_
+#define ENABLE_DAEMON_PADDING_CN 171 * dpi_scale_
+#define ENABLE_DAEMON_PADDING_EN 218 * dpi_scale_
+#define ENABLE_MINIZE_TO_TRAY_PADDING_CN 171 * dpi_scale_
+#define ENABLE_MINIZE_TO_TRAY_PADDING_EN 218 * dpi_scale_
+#define SELF_HOSTED_SERVER_HOST_INPUT_BOX_PADDING_CN 90 * dpi_scale_
+#define SELF_HOSTED_SERVER_HOST_INPUT_BOX_PADDING_EN 137 * dpi_scale_
+#define SELF_HOSTED_SERVER_PORT_INPUT_BOX_PADDING_CN 90 * dpi_scale_
+#define SELF_HOSTED_SERVER_PORT_INPUT_BOX_PADDING_EN 137 * dpi_scale_
+#define SETTINGS_SELECT_WINDOW_WIDTH 73 * dpi_scale_
+#define SELF_HOSTED_SERVER_INPUT_WINDOW_WIDTH 130 * dpi_scale_
+#define SETTINGS_OK_BUTTON_PADDING_CN 65 * dpi_scale_
+#define SETTINGS_OK_BUTTON_PADDING_EN 83 * dpi_scale_
+#define SELF_HOSTED_SERVER_CONFIG_OK_BUTTON_PADDING_CN 78 * dpi_scale_
+#define SELF_HOSTED_SERVER_CONFIG_OK_BUTTON_PADDING_EN 91 * dpi_scale_
+#define UPDATE_NOTIFICATION_OK_BUTTON_PADDING_CN 162 * dpi_scale_
+#define UPDATE_NOTIFICATION_OK_BUTTON_PADDING_EN 146 * dpi_scale_
+#define UPDATE_NOTIFICATION_RESERVED_HEIGHT 120 * dpi_scale_
+#define REQUEST_PERMISSION_WINDOW_WIDTH_CN 130 * dpi_scale_
+#define REQUEST_PERMISSION_WINDOW_HEIGHT_CN 125 * dpi_scale_
+#define REQUEST_PERMISSION_WINDOW_WIDTH_EN 260 * dpi_scale_
+#define REQUEST_PERMISSION_WINDOW_HEIGHT_EN 125 * dpi_scale_
+#define REQUEST_PERMISSION_WINDOW_CHECKBOX_PADDING_CN 90 * dpi_scale_
+#define REQUEST_PERMISSION_WINDOW_CHECKBOX_PADDING_EN 210 * dpi_scale_
 #endif
--- a/src/gui/assets/localization/localization.h
+++ b/src/gui/assets/localization/localization.h
@@ -158,12 +158,18 @@ static std::vector<std::string> no_such_id = {

 static std::vector<std::string> about = {
    reinterpret_cast<const char*>(u8"关于"), "About"};
+static std::vector<std::string> notification = {
+    reinterpret_cast<const char*>(u8"通知"), "Notification"};
 static std::vector<std::string> new_version_available = {
    reinterpret_cast<const char*>(u8"新版本可用"), "New Version Available"};
 static std::vector<std::string> version = {
    reinterpret_cast<const char*>(u8"版本"), "Version"};
+static std::vector<std::string> release_date = {
+    reinterpret_cast<const char*>(u8"发布日期: "), "Release Date: "};
 static std::vector<std::string> access_website = {
    reinterpret_cast<const char*>(u8"访问官网: "), "Access Website: "};
+static std::vector<std::string> update = {
+    reinterpret_cast<const char*>(u8"更新"), "Update"};

 static std::vector<std::string> confirm_delete_connection = {
    reinterpret_cast<const char*>(u8"确认删除此连接"),
@@ -182,6 +188,19 @@ static std::vector<std::string> minimize_to_tray = {
    "Minimize to system tray when exit:"};
 static std::vector<LPCWSTR> exit_program = {L"退出", L"Exit"};
 #endif
+#ifdef __APPLE__
+static std::vector<std::string> request_permissions = {
+    reinterpret_cast<const char*>(u8"权限请求"), "Request Permissions"};
+static std::vector<std::string> screen_recording_permission = {
+    reinterpret_cast<const char*>(u8"屏幕录制权限"),
+    "Screen Recording Permission"};
+static std::vector<std::string> accessibility_permission = {
+    reinterpret_cast<const char*>(u8"辅助功能权限"),
+    "Accessibility Permission"};
+static std::vector<std::string> permission_required_message = {
+    reinterpret_cast<const char*>(u8"该应用需要授权以下权限:"),
+    "The application requires the following permissions:"};
+#endif
 }  // namespace localization
 }  // namespace crossdesk
 #endif
--- a/src/gui/panels/local_peer_panel.cpp
+++ b/src/gui/panels/local_peer_panel.cpp
@@ -76,7 +76,8 @@ int Render::LocalWindow() {
      ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4(0, 0, 0, 0));
      ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4(0, 0, 0, 0));
      ImGui::SetWindowFontScale(0.5f);
-      if (ImGui::Button(ICON_FA_COPY, ImVec2(22, 38))) {
+      if (ImGui::Button(ICON_FA_COPY,
+                        ImVec2(22 * dpi_scale_, 38 * dpi_scale_))) {
        local_id_copied_ = true;
        ImGui::SetClipboardText(client_id_);
        copy_start_time_ = ImGui::GetTime();
@@ -156,23 +157,27 @@ int Render::LocalWindow() {
      ImGui::SetWindowFontScale(0.5f);
      auto l_x = ImGui::GetCursorScreenPos().x;
      auto l_y = ImGui::GetCursorScreenPos().y;
-      if (ImGui::Button(ICON_FA_EYE, ImVec2(22, 38))) {
+      if (ImGui::Button(ICON_FA_EYE,
+                        ImVec2(22 * dpi_scale_, 38 * dpi_scale_))) {
        show_password_ = !show_password_;
      }

      if (!show_password_) {
        ImDrawList* draw_list = ImGui::GetWindowDrawList();
-        draw_list->AddLine(ImVec2(l_x + 3.0f, l_y + 12.5f),
-                           ImVec2(l_x + 20.3f, l_y + 26.5f),
-                           IM_COL32(239, 240, 242, 255), 2.0f);
-        draw_list->AddLine(ImVec2(l_x + 3.0f, l_y + 11.0f),
-                           ImVec2(l_x + 20.3f, l_y + 25.0f),
-                           IM_COL32(0, 0, 0, 255), 1.5f);
+        draw_list->AddLine(
+            ImVec2(l_x + 3.0f * dpi_scale_, l_y + 12.5f * dpi_scale_),
+            ImVec2(l_x + 20.3f * dpi_scale_, l_y + 26.5f * dpi_scale_),
+            IM_COL32(239, 240, 242, 255), 2.0f);
+        draw_list->AddLine(
+            ImVec2(l_x + 3.0f * dpi_scale_, l_y + 11.0f * dpi_scale_),
+            ImVec2(l_x + 20.3f * dpi_scale_, l_y + 25.0f * dpi_scale_),
+            IM_COL32(0, 0, 0, 255), 1.5f);
      }

      ImGui::SameLine();

-      if (ImGui::Button(ICON_FA_PEN, ImVec2(22, 38))) {
+      if (ImGui::Button(ICON_FA_PEN,
+                        ImVec2(22 * dpi_scale_, 38 * dpi_scale_))) {
        show_reset_password_window_ = true;
      }
      ImGui::SetWindowFontScale(1.0f);
--- a/src/gui/panels/recent_connections_panel.cpp
+++ b/src/gui/panels/recent_connections_panel.cpp
@@ -12,9 +12,9 @@ int Render::RecentConnectionsWindow() {
  ImGui::PushStyleColor(ImGuiCol_ChildBg, ImVec4(1.0f, 1.0f, 1.0f, 1.0f));
  ImGui::BeginChild(
      "RecentConnectionsWindow",
-      ImVec2(main_window_width_default_,
-             main_window_height_default_ - title_bar_height_ -
-                 local_window_height_ - status_bar_height_ + 1.0f),
+      ImVec2(main_window_width_, main_window_height_ - title_bar_height_ -
+                                     local_window_height_ - status_bar_height_ +
+                                     1.0f),
      ImGuiChildFlags_Border,
      ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoCollapse |
          ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoTitleBar |
@@ -37,18 +37,22 @@ int Render::RecentConnectionsWindow() {
 }

 int Render::ShowRecentConnections() {
-  ImGui::SetCursorPosX(25.0f);
+  float recent_connection_window_padding = 25.0f * dpi_scale_;
+  float recent_connection_window_width =
+      main_window_width_ - 2 * recent_connection_window_padding;
+  ImGui::SetCursorPosX(recent_connection_window_padding);
  ImVec2 sub_window_pos = ImGui::GetCursorPos();
  std::map<std::string, ImVec2> sub_containers_pos;
  float recent_connection_sub_container_width =
-      recent_connection_image_width_ + 16.0f;
+      recent_connection_image_width_ + 16.0f * dpi_scale_;
  float recent_connection_sub_container_height =
-      recent_connection_image_height_ + 36.0f;
+      recent_connection_image_height_ + 36.0f * dpi_scale_;
  ImGui::PushStyleColor(ImGuiCol_ChildBg,
                        ImVec4(239.0f / 255, 240.0f / 255, 242.0f / 255, 1.0f));
  ImGui::PushStyleVar(ImGuiStyleVar_ChildRounding, 10.0f);
  ImGui::BeginChild("RecentConnectionsContainer",
-                    ImVec2(main_window_width_default_ - 50.0f, 145.0f),
+                    ImVec2(recent_connection_window_width,
+                           recent_connection_sub_container_height * 1.1f),
                    ImGuiChildFlags_Border,
                    ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoCollapse |
                        ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoTitleBar |
@@ -60,8 +64,8 @@ int Render::ShowRecentConnections() {
  ImGui::PopStyleColor();
  size_t recent_connections_count = recent_connections_.size();
  int count = 0;
-  float button_width = 22;
-  float button_height = 22;
+  float button_width = 22 * dpi_scale_;
+  float button_height = 22 * dpi_scale_;
  for (auto& it : recent_connections_) {
    sub_containers_pos[it.first] = ImGui::GetCursorPos();
    std::string recent_connection_sub_window_name =
@@ -114,10 +118,11 @@ int Render::ShowRecentConnections() {
      it.second.remote_host_name = "unknown";
    }

-    ImVec2 image_screen_pos = ImVec2(ImGui::GetCursorScreenPos().x + 5.0f,
-                                     ImGui::GetCursorScreenPos().y + 5.0f);
-    ImVec2 image_pos =
-        ImVec2(ImGui::GetCursorPosX() + 5.0f, ImGui::GetCursorPosY() + 5.0f);
+    ImVec2 image_screen_pos =
+        ImVec2(ImGui::GetCursorScreenPos().x + 5.0f * dpi_scale_,
+               ImGui::GetCursorScreenPos().y + 5.0f * dpi_scale_);
+    ImVec2 image_pos = ImVec2(ImGui::GetCursorPosX() + 5.0f * dpi_scale_,
+                              ImGui::GetCursorPosY() + 5.0f * dpi_scale_);
    ImGui::SetCursorPos(image_pos);
    ImGui::Image((ImTextureID)(intptr_t)it.second.texture,
                 ImVec2((float)recent_connection_image_width_,
@@ -206,17 +211,20 @@ int Render::ShowRecentConnections() {

    if (count != recent_connections_count - 1) {
      ImVec2 line_start =
-          ImVec2(image_screen_pos.x + recent_connection_image_width_ + 20.0f,
+          ImVec2(image_screen_pos.x + recent_connection_image_width_ +
+                     20.0f * dpi_scale_,
                 image_screen_pos.y);
      ImVec2 line_end = ImVec2(
-          image_screen_pos.x + recent_connection_image_width_ + 20.0f,
+          image_screen_pos.x + recent_connection_image_width_ +
+              20.0f * dpi_scale_,
          image_screen_pos.y + recent_connection_image_height_ + button_height);
      ImGui::GetWindowDrawList()->AddLine(line_start, line_end,
                                          IM_COL32(0, 0, 0, 122), 1.0f);
    }

    count++;
-    ImGui::SameLine(0, count != recent_connections_count ? 26.0f : 0.0f);
+    ImGui::SameLine(
+        0, count != recent_connections_count ? (25.0f * dpi_scale_) : 0.0f);
  }

  ImGui::EndChild();
--- a/src/gui/panels/remote_peer_panel.cpp
+++ b/src/gui/panels/remote_peer_panel.cpp
@@ -75,38 +75,64 @@ int Render::RemoteWindow() {
      remote_id.erase(remove_if(remote_id.begin(), remote_id.end(),
                                static_cast<int (*)(int)>(&isspace)),
                      remote_id.end());
-      if (ImGui::Button(ICON_FA_ARROW_RIGHT_LONG, ImVec2(55, 38)) ||
+      if (ImGui::Button(ICON_FA_ARROW_RIGHT_LONG,
+                        ImVec2(55 * dpi_scale_, 38 * dpi_scale_)) ||
          enter_pressed) {
        connect_button_pressed_ = true;
        bool found = false;
+        std::string target_remote_id;
+        std::string target_password;
+        bool should_connect = false;
+        bool already_connected = false;
+
        for (auto& [id, props] : recent_connections_) {
          if (id.find(remote_id) != std::string::npos) {
            found = true;
-            if (client_properties_.find(remote_id) !=
-                client_properties_.end()) {
-              if (!client_properties_[remote_id]->connection_established_) {
-                ConnectTo(props.remote_id, props.password.c_str(), false);
+            target_remote_id = props.remote_id;
+            target_password = props.password;
+            {
+              // std::shared_lock lock(client_properties_mutex_);
+              if (client_properties_.find(remote_id) !=
+                  client_properties_.end()) {
+                if (!client_properties_[remote_id]->connection_established_) {
+                  should_connect = true;
+                } else {
+                  already_connected = true;
+                }
              } else {
-                // todo: show warning message
-                LOG_INFO("Already connected to [{}]", remote_id);
+                should_connect = true;
              }
-            } else {
-              ConnectTo(props.remote_id, props.password.c_str(), false);
            }
+
+            if (should_connect) {
+              ConnectTo(target_remote_id, target_password.c_str(), false);
+            } else if (already_connected) {
+              LOG_INFO("Already connected to [{}]", remote_id);
+            }
+            break;
          }
        }
-
        if (!found) {
          ConnectTo(remote_id, "", false);
        }
      }

+      // check every 1 second for rejoin
      if (need_to_rejoin_) {
-        need_to_rejoin_ = false;
-        for (const auto& [_, props] : client_properties_) {
-          if (props->rejoin_) {
-            ConnectTo(props->remote_id_, props->remote_password_,
-                      props->remember_password_);
+        auto now = std::chrono::steady_clock::now();
+        auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(
+                           now - last_rejoin_check_time_)
+                           .count();
+
+        if (elapsed >= 1000) {
+          last_rejoin_check_time_ = now;
+          need_to_rejoin_ = false;
+          // std::shared_lock lock(client_properties_mutex_);
+          for (const auto& [_, props] : client_properties_) {
+            if (props->rejoin_) {
+              ConnectTo(props->remote_id_, props->remote_password_,
+                        props->remember_password_);
+            }
          }
        }
      }
@@ -136,33 +162,68 @@ int Render::ConnectTo(const std::string& remote_id, const char* password,
  LOG_INFO("Connect to [{}]", remote_id);
  focused_remote_id_ = remote_id;

-  if (client_properties_.find(remote_id) == client_properties_.end()) {
-    client_properties_[remote_id] =
-        std::make_shared<SubStreamWindowProperties>();
-    auto props = client_properties_[remote_id];
-    props->local_id_ = "C-" + std::string(client_id_);
-    props->remote_id_ = remote_id;
-    memcpy(&props->params_, &params_, sizeof(Params));
-    props->params_.user_id = props->local_id_.c_str();
-    props->peer_ = CreatePeer(&props->params_);
+  // std::shared_lock shared_lock(client_properties_mutex_);
+  bool exists =
+      (client_properties_.find(remote_id) != client_properties_.end());
+  // shared_lock.unlock();

-    for (auto& display_info : display_info_list_) {
-      AddVideoStream(peer_, display_info.name.c_str());
-    }
-    AddAudioStream(props->peer_, props->audio_label_.c_str());
-    AddDataStream(props->peer_, props->data_label_.c_str());
+  if (!exists) {
+    PeerPtr* peer_to_init = nullptr;
+    std::string local_id;

-    if (props->peer_) {
-      LOG_INFO("[{}] Create peer instance successful", props->local_id_);
-      Init(props->peer_);
-      LOG_INFO("[{}] Peer init finish", props->local_id_);
-    } else {
-      LOG_INFO("Create peer [{}] instance failed", props->local_id_);
+    {
+      // std::unique_lock unique_lock(client_properties_mutex_);
+      if (client_properties_.find(remote_id) == client_properties_.end()) {
+        client_properties_[remote_id] =
+            std::make_shared<SubStreamWindowProperties>();
+        auto props = client_properties_[remote_id];
+        props->local_id_ = "C-" + std::string(client_id_);
+        props->remote_id_ = remote_id;
+        memcpy(&props->params_, &params_, sizeof(Params));
+        props->params_.user_id = props->local_id_.c_str();
+        props->peer_ = CreatePeer(&props->params_);
+        props->control_window_min_width_ =
+            props->control_window_min_width_ * dpi_scale_;
+        props->control_window_min_height_ =
+            props->control_window_min_height_ * dpi_scale_;
+        props->control_window_max_width_ =
+            props->control_window_max_width_ * dpi_scale_;
+        props->control_window_max_height_ =
+            props->control_window_max_height_ * dpi_scale_;
+        props->control_window_width_ =
+            props->control_window_width_ * dpi_scale_;
+        props->control_window_height_ =
+            props->control_window_height_ * dpi_scale_;
+        // props->control_bar_pos_x_ = props->control_bar_pos_x_ * dpi_scale_;
+        // props->control_bar_pos_y_ = props->control_bar_pos_y_ * dpi_scale_;
+
+        if (!props->peer_) {
+          LOG_INFO("Create peer [{}] instance failed", props->local_id_);
+          return -1;
+        }
+
+        for (auto& display_info : display_info_list_) {
+          AddVideoStream(props->peer_, display_info.name.c_str());
+        }
+        AddAudioStream(props->peer_, props->audio_label_.c_str());
+        AddDataStream(props->peer_, props->data_label_.c_str());
+
+        props->connection_status_ = ConnectionStatus::Connecting;
+
+        peer_to_init = props->peer_;
+        local_id = props->local_id_;
+      }
    }

-    props->connection_status_ = ConnectionStatus::Connecting;
+    if (peer_to_init) {
+      LOG_INFO("[{}] Create peer instance successful", local_id);
+      Init(peer_to_init);
+      LOG_INFO("[{}] Peer init finish", local_id);
+    }
  }
+
  int ret = -1;
+  // std::shared_lock read_lock(client_properties_mutex_);
  auto props = client_properties_[remote_id];
  if (!props->connection_established_) {
    props->remember_password_ = remember_password;
@@ -174,14 +235,17 @@ int Render::ConnectTo(const std::string& remote_id, const char* password,
    }

    std::string remote_id_with_pwd = remote_id + "@" + password;
-    ret = JoinConnection(props->peer_, remote_id_with_pwd.c_str());
-    if (0 == ret) {
-      props->rejoin_ = false;
-    } else {
-      props->rejoin_ = true;
-      need_to_rejoin_ = true;
+    if (props->peer_) {
+      ret = JoinConnection(props->peer_, remote_id_with_pwd.c_str());
+      if (0 == ret) {
+        props->rejoin_ = false;
+      } else {
+        props->rejoin_ = true;
+        need_to_rejoin_ = true;
+      }
    }
  }
+  // read_lock.unlock();

  return 0;
 }
--- a/src/gui/render.cpp
+++ b/src/gui/render.cpp
@@ -133,9 +133,9 @@ SDL_HitTestResult Render::HitTestCallback(SDL_Window* window,
  int window_width, window_height;
  SDL_GetWindowSize(window, &window_width, &window_height);

-  if (area->y < 30 && area->y > MOUSE_GRAB_PADDING &&
-      area->x < window_width - 120 && area->x > MOUSE_GRAB_PADDING &&
-      !render->is_tab_bar_hovered_) {
+  if (area->y < 30 * render->dpi_scale_ && area->y > MOUSE_GRAB_PADDING &&
+      area->x < window_width - 120 * render->dpi_scale_ &&
+      area->x > MOUSE_GRAB_PADDING && !render->is_tab_bar_hovered_) {
    return SDL_HITTEST_DRAGGABLE;
  }

@@ -168,7 +168,7 @@ SDL_HitTestResult Render::HitTestCallback(SDL_Window* window,
  return SDL_HITTEST_NORMAL;
 }

-Render::Render() {}
+Render::Render() : last_rejoin_check_time_(std::chrono::steady_clock::now()) {}

 Render::~Render() {}

@@ -365,13 +365,16 @@ int Render::StartSpeakerCapturer() {

  if (speaker_capturer_) {
    speaker_capturer_->Start();
+    start_speaker_capturer_ = true;
  }
+
  return 0;
 }

 int Render::StopSpeakerCapturer() {
  if (speaker_capturer_) {
    speaker_capturer_->Stop();
+    start_speaker_capturer_ = false;
  }

  return 0;
@@ -602,6 +605,53 @@ void Render::UpdateInteractions() {
  }
 }

+int Render::UpdateWindowSizeWithDpiScale(float dpi_scale) {
+  main_window_width_ = (int)(main_window_width_default_ * dpi_scale);
+  main_window_height_ = (int)(main_window_height_default_ * dpi_scale);
+  stream_window_width_ = (int)(stream_window_width_default_ * dpi_scale);
+  stream_window_height_ = (int)(stream_window_height_default_ * dpi_scale);
+
+  local_window_width_ = (int)(local_window_width_ * dpi_scale);
+  local_window_height_ = (int)(local_window_height_ * dpi_scale);
+  remote_window_width_ = (int)(remote_window_width_ * dpi_scale);
+  remote_window_height_ = (int)(remote_window_height_ * dpi_scale);
+  local_child_window_width_ = (int)(local_child_window_width_ * dpi_scale);
+  local_child_window_height_ = (int)(local_child_window_height_ * dpi_scale);
+  remote_child_window_width_ = (int)(remote_child_window_width_ * dpi_scale);
+  remote_child_window_height_ = (int)(remote_child_window_height_ * dpi_scale);
+  main_window_text_y_padding_ = (int)(main_window_text_y_padding_ * dpi_scale);
+  main_child_window_x_padding_ =
+      (int)(main_child_window_x_padding_ * dpi_scale);
+  main_child_window_y_padding_ =
+      (int)(main_child_window_y_padding_ * dpi_scale);
+  title_bar_width_ = (int)(title_bar_width_ * dpi_scale);
+  title_bar_height_ = (int)(title_bar_height_ * dpi_scale);
+  status_bar_height_ = (int)(status_bar_height_ * dpi_scale);
+  connection_status_window_width_ =
+      (int)(connection_status_window_width_ * dpi_scale);
+  connection_status_window_height_ =
+      (int)(connection_status_window_height_ * dpi_scale);
+  notification_window_width_ = (int)(notification_window_width_ * dpi_scale);
+  notification_window_height_ = (int)(notification_window_height_ * dpi_scale);
+  about_window_width_ = (int)(about_window_width_ * dpi_scale);
+  about_window_height_ = (int)(about_window_height_ * dpi_scale);
+  update_notification_window_width_ =
+      (int)(update_notification_window_width_ * dpi_scale);
+  update_notification_window_height_ =
+      (int)(update_notification_window_height_ * dpi_scale);
+
+  recent_connection_image_width_ =
+      (int)(recent_connection_image_width_ * dpi_scale);
+  recent_connection_image_height_ =
+      (int)(recent_connection_image_height_ * dpi_scale);
+
+  if (thumbnail_) {
+    thumbnail_->SetThumbnailDpiScale(dpi_scale);
+  }
+
+  return 0;
+}
+
 int Render::CreateMainWindow() {
  main_ctx_ = ImGui::CreateContext();
  if (!main_ctx_) {
@@ -611,9 +661,13 @@ int Render::CreateMainWindow() {

  ImGui::SetCurrentContext(main_ctx_);

+  dpi_scale_ = SDL_GetDisplayContentScale(SDL_GetPrimaryDisplay());
+  LOG_INFO("System DPI scale before window creation: [{}]", dpi_scale_);
+
+  UpdateWindowSizeWithDpiScale(dpi_scale_);
+
  if (!SDL_CreateWindowAndRenderer(
-          "Remote Desk", (int)main_window_width_default_,
-          (int)main_window_height_default_,
+          "Remote Desk", (int)main_window_width_, (int)main_window_height_,
          SDL_WINDOW_HIGH_PIXEL_DENSITY | SDL_WINDOW_BORDERLESS |
              SDL_WINDOW_HIDDEN,
          &main_window_, &main_renderer_)) {
@@ -627,6 +681,12 @@ int Render::CreateMainWindow() {
  // for window region action
  SDL_SetWindowHitTest(main_window_, HitTestCallback, this);

+  SetupFontAndStyle(true);
+
+  ImGuiStyle& style = ImGui::GetStyle();
+  style.ScaleAllSizes(dpi_scale_);
+  style.FontScaleDpi = dpi_scale_;
+
 #if _WIN32
  SDL_PropertiesID props = SDL_GetWindowProperties(main_window_);
  HWND main_hwnd = (HWND)SDL_GetPointerProperty(
@@ -638,6 +698,9 @@ int Render::CreateMainWindow() {
                                    localization_language_index_);
 #endif

+  ImGui_ImplSDL3_InitForSDLRenderer(main_window_, main_renderer_);
+  ImGui_ImplSDLRenderer3_Init(main_renderer_);
+
  return 0;
 }

@@ -671,8 +734,8 @@ int Render::CreateStreamWindow() {
  ImGui::SetCurrentContext(stream_ctx_);

  if (!SDL_CreateWindowAndRenderer(
-          "Stream window", (int)stream_window_width_default_,
-          (int)stream_window_height_default_,
+          "Stream window", (int)stream_window_width_,
+          (int)stream_window_height_,
          SDL_WINDOW_HIGH_PIXEL_DENSITY | SDL_WINDOW_BORDERLESS,
          &stream_window_, &stream_renderer_)) {
    LOG_ERROR("Error creating stream_window_ and stream_renderer_: {}",
@@ -687,6 +750,13 @@ int Render::CreateStreamWindow() {
  // for window region action
  SDL_SetWindowHitTest(stream_window_, HitTestCallback, this);

+  SetupFontAndStyle(false);
+
+  SDL_SetRenderScale(stream_renderer_, dpi_scale_, dpi_scale_);
+
+  ImGui_ImplSDL3_InitForSDLRenderer(stream_window_, stream_renderer_);
+  ImGui_ImplSDLRenderer3_Init(stream_renderer_);
+
  // change props->stream_render_rect_
  SDL_Event event;
  event.type = SDL_EVENT_WINDOW_PIXEL_SIZE_CHANGED;
@@ -696,6 +766,9 @@ int Render::CreateStreamWindow() {
  stream_window_created_ = true;
  just_created_ = true;

+  stream_window_inited_ = true;
+  LOG_INFO("Stream window inited");
+
  return 0;
 }

@@ -720,7 +793,9 @@ int Render::DestroyStreamWindow() {
  return 0;
 }

-int Render::SetupFontAndStyle() {
+int Render::SetupFontAndStyle(bool main_window) {
+  float font_size = 32.0f;
+
  // Setup Dear ImGui style
  ImGuiIO& io = ImGui::GetIO();

@@ -730,39 +805,80 @@ int Render::SetupFontAndStyle() {
  ImFontConfig config;
  config.FontDataOwnedByAtlas = false;
  io.Fonts->AddFontFromMemoryTTF(OPPOSans_Regular_ttf, OPPOSans_Regular_ttf_len,
-                                 32.0f, &config,
+                                 font_size, &config,
                                 io.Fonts->GetGlyphRangesChineseFull());
  config.MergeMode = true;
  static const ImWchar icon_ranges[] = {ICON_MIN_FA, ICON_MAX_FA, 0};
  io.Fonts->AddFontFromMemoryTTF(fa_solid_900_ttf, fa_solid_900_ttf_len, 30.0f,
                                 &config, icon_ranges);
-  io.Fonts->Build();
-  ImGui::StyleColorsLight();

-  return 0;
-}
-
-int Render::SetupMainWindow() {
-  if (!main_ctx_) {
-    LOG_ERROR("Main context is null");
-    return -1;
+  // Load system Chinese font as fallback
+  config.MergeMode = false;
+  config.FontDataOwnedByAtlas = false;
+  if (main_window) {
+    main_windows_system_chinese_font_ = nullptr;
+  } else {
+    stream_windows_system_chinese_font_ = nullptr;
  }

-  ImGui::SetCurrentContext(main_ctx_);
+#if defined(_WIN32)
+  // Windows: Try Microsoft YaHei (微软雅黑) first, then SimSun (宋体)
+  const char* font_paths[] = {"C:/Windows/Fonts/msyh.ttc",
+                              "C:/Windows/Fonts/msyhbd.ttc",
+                              "C:/Windows/Fonts/simsun.ttc", nullptr};
+#elif defined(__APPLE__)
+  // macOS: Try PingFang SC first, then STHeiti
+  const char* font_paths[] = {"/System/Library/Fonts/PingFang.ttc",
+                              "/System/Library/Fonts/STHeiti Light.ttc",
+                              "/System/Library/Fonts/STHeiti Medium.ttc",
+                              nullptr};
+#else
+  // Linux: Try common Chinese fonts
+  const char* font_paths[] = {
+      "/usr/share/fonts/truetype/wqy/wqy-microhei.ttc",
+      "/usr/share/fonts/truetype/wqy/wqy-zenhei.ttc",
+      "/usr/share/fonts/truetype/arphic/uming.ttc",
+      "/usr/share/fonts/truetype/noto/NotoSansCJK-Regular.ttc", nullptr};
+#endif

-  SetupFontAndStyle();
+  for (int i = 0; font_paths[i] != nullptr; i++) {
+    std::ifstream font_file(font_paths[i], std::ios::binary);
+    if (font_file.good()) {
+      font_file.close();
+      if (main_window) {
+        main_windows_system_chinese_font_ =
+            io.Fonts->AddFontFromFileTTF(font_paths[i], font_size, &config,
+                                         io.Fonts->GetGlyphRangesChineseFull());
+        if (main_windows_system_chinese_font_ != nullptr) {
+          LOG_INFO("Loaded system Chinese font: {}", font_paths[i]);
+          break;
+        }
+      } else {
+        stream_windows_system_chinese_font_ =
+            io.Fonts->AddFontFromFileTTF(font_paths[i], font_size, &config,
+                                         io.Fonts->GetGlyphRangesChineseFull());
+        if (stream_windows_system_chinese_font_ != nullptr) {
+          LOG_INFO("Loaded system Chinese font: {}", font_paths[i]);
+          break;
+        }
+      }
+    }
+  }

-  SDL_GetWindowSizeInPixels(main_window_, &main_window_width_real_,
-                            &main_window_height_real_);
-  main_window_dpi_scaling_w_ = main_window_width_real_ / main_window_width_;
-  main_window_dpi_scaling_h_ = main_window_width_real_ / main_window_width_;
-  SDL_SetRenderScale(main_renderer_, main_window_dpi_scaling_w_,
-                     main_window_dpi_scaling_h_);
-  LOG_INFO("Use dpi scaling [{}x{}] for main window",
-           main_window_dpi_scaling_w_, main_window_dpi_scaling_h_);
+  // If no system font found, use default font
+  if (main_window) {
+    if (main_windows_system_chinese_font_ == nullptr) {
+      main_windows_system_chinese_font_ = io.Fonts->AddFontDefault(&config);
+      LOG_WARN("System Chinese font not found, using default font");
+    }
+  } else {
+    if (stream_windows_system_chinese_font_ == nullptr) {
+      stream_windows_system_chinese_font_ = io.Fonts->AddFontDefault(&config);
+      LOG_WARN("System Chinese font not found, using default font");
+    }
+  }

-  ImGui_ImplSDL3_InitForSDLRenderer(main_window_, main_renderer_);
-  ImGui_ImplSDLRenderer3_Init(main_renderer_);
+  ImGui::StyleColorsLight();

  return 0;
 }
@@ -776,42 +892,6 @@ int Render::DestroyMainWindowContext() {
  return 0;
 }

-int Render::SetupStreamWindow() {
-  if (stream_window_inited_) {
-    return 0;
-  }
-
-  if (!stream_ctx_) {
-    LOG_ERROR("Stream context is null");
-    return -1;
-  }
-
-  ImGui::SetCurrentContext(stream_ctx_);
-
-  SetupFontAndStyle();
-
-  SDL_GetWindowSizeInPixels(stream_window_, &stream_window_width_real_,
-                            &stream_window_height_real_);
-
-  stream_window_dpi_scaling_w_ =
-      stream_window_width_real_ / stream_window_width_;
-  stream_window_dpi_scaling_h_ =
-      stream_window_width_real_ / stream_window_width_;
-
-  SDL_SetRenderScale(stream_renderer_, stream_window_dpi_scaling_w_,
-                     stream_window_dpi_scaling_h_);
-  LOG_INFO("Use dpi scaling [{}x{}] for stream window",
-           stream_window_dpi_scaling_w_, stream_window_dpi_scaling_h_);
-
-  ImGui_ImplSDL3_InitForSDLRenderer(stream_window_, stream_renderer_);
-  ImGui_ImplSDLRenderer3_Init(stream_renderer_);
-
-  stream_window_inited_ = true;
-  LOG_INFO("Stream window inited");
-
-  return 0;
-}
-
 int Render::DestroyStreamWindowContext() {
  stream_window_inited_ = false;
  ImGui::SetCurrentContext(stream_ctx_);
@@ -835,9 +915,8 @@ int Render::DrawMainWindow() {

  ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(1.0f, 1.0f, 1.0f, 1.0f));
  ImGui::SetNextWindowPos(ImVec2(0, 0), ImGuiCond_Always);
-  ImGui::SetNextWindowSize(
-      ImVec2(main_window_width_, main_window_height_default_),
-      ImGuiCond_Always);
+  ImGui::SetNextWindowSize(ImVec2(main_window_width_, main_window_height_),
+                           ImGuiCond_Always);
  ImGui::Begin("MainRender", nullptr,
               ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoTitleBar |
                   ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoScrollbar |
@@ -848,10 +927,22 @@ int Render::DrawMainWindow() {

  MainWindow();

+  UpdateNotificationWindow();
+
+#ifdef __APPLE__
+  if (show_request_permission_window_) {
+    RequestPermissionWindow();
+  }
+#endif
+
  ImGui::End();

  // Rendering
+  ImGuiIO& io = ImGui::GetIO();
+  (void)io;
  ImGui::Render();
+  SDL_SetRenderScale(main_renderer_, io.DisplayFramebufferScale.x,
+                     io.DisplayFramebufferScale.y);
  SDL_RenderClear(main_renderer_);
  ImGui_ImplSDLRenderer3_RenderDrawData(ImGui::GetDrawData(), main_renderer_);
  SDL_RenderPresent(main_renderer_);
@@ -873,7 +964,6 @@ int Render::DrawStreamWindow() {
  StreamWindow();

  if (!fullscreen_button_pressed_) {
-    ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(1.0f, 1.0f, 1.0f, 1.0f));
    ImGui::SetNextWindowPos(ImVec2(0, 0), ImGuiCond_Always);
    ImGui::SetNextWindowSize(
        ImVec2(stream_window_width_,
@@ -884,16 +974,19 @@ int Render::DrawStreamWindow() {
                     ImGuiWindowFlags_NoBringToFrontOnFocus |
                     ImGuiWindowFlags_NoDocking);

-    ImGui::PopStyleColor();
-
    TitleBar(false);
    ImGui::End();
  }

  // Rendering
+  ImGuiIO& io = ImGui::GetIO();
+  (void)io;
  ImGui::Render();
+  SDL_SetRenderScale(stream_renderer_, io.DisplayFramebufferScale.x,
+                     io.DisplayFramebufferScale.y);
  SDL_RenderClear(stream_renderer_);

+  // std::shared_lock lock(client_properties_mutex_);
  for (auto& it : client_properties_) {
    auto props = it.second;
    if (props->tab_selected_) {
@@ -913,8 +1006,25 @@ int Render::DrawStreamWindow() {
 }

 int Render::Run() {
-  latest_version_ = CheckUpdate();
-  update_available_ = IsNewerVersion(CROSSDESK_VERSION, latest_version_);
+  latest_version_info_ = CheckUpdate();
+  if (!latest_version_info_.empty() &&
+      latest_version_info_.contains("version") &&
+      latest_version_info_["version"].is_string()) {
+    latest_version_ = latest_version_info_["version"];
+    if (latest_version_info_.contains("releaseNotes") &&
+        latest_version_info_["releaseNotes"].is_string()) {
+      release_notes_ = latest_version_info_["releaseNotes"];
+    } else {
+      release_notes_ = "";
+    }
+    update_available_ = IsNewerVersion(CROSSDESK_VERSION, latest_version_);
+    if (update_available_) {
+      show_update_notification_window_ = true;
+    }
+  } else {
+    latest_version_ = "";
+    update_available_ = false;
+  }

  path_manager_ = std::make_unique<PathManager>("CrossDesk");
  if (path_manager_) {
@@ -941,6 +1051,8 @@ int Render::Run() {
  }

  InitializeLogger();
+  LOG_INFO("CrossDesk version: {}", CROSSDESK_VERSION);
+
  InitializeSettings();
  InitializeSDL();
  InitializeModules();
@@ -1005,7 +1117,6 @@ void Render::InitializeModules() {

 void Render::InitializeMainWindow() {
  CreateMainWindow();
-  SetupMainWindow();
  if (SDL_WINDOW_HIDDEN & SDL_GetWindowFlags(main_window_)) {
    SDL_ShowWindow(main_window_);
  }
@@ -1116,7 +1227,6 @@ void Render::HandleRecentConnections() {
 void Render::HandleStreamWindow() {
  if (need_to_create_stream_window_) {
    CreateStreamWindow();
-    SetupStreamWindow();
    need_to_create_stream_window_ = false;
  }

@@ -1211,12 +1321,18 @@ void Render::CleanupPeers() {
    DestroyPeer(&peer_);
  }

-  for (auto& it : client_properties_) {
-    auto props = it.second;
-    CleanupPeer(props);
+  {
+    // std::shared_lock lock(client_properties_mutex_);
+    for (auto& it : client_properties_) {
+      auto props = it.second;
+      CleanupPeer(props);
+    }
  }

-  client_properties_.clear();
+  {
+    // std::unique_lock lock(client_properties_mutex_);
+    client_properties_.clear();
+  }
 }

 void Render::CleanSubStreamWindowProperties(
@@ -1233,6 +1349,7 @@ void Render::CleanSubStreamWindowProperties(
 }

 void Render::UpdateRenderRect() {
+  // std::shared_lock lock(client_properties_mutex_);
  for (auto& [_, props] : client_properties_) {
    if (!props->reset_control_bar_pos_) {
      props->mouse_diff_control_bar_pos_x_ = 0;
@@ -1307,34 +1424,41 @@ void Render::ProcessSdlEvent(const SDL_Event& event) {
        DestroyStreamWindow();
        DestroyStreamWindowContext();

-        for (auto& [host_name, props] : client_properties_) {
-          thumbnail_->SaveToThumbnail(
-              (char*)props->dst_buffer_, props->video_width_,
-              props->video_height_, host_name, props->remote_host_name_,
-              props->remember_password_ ? props->remote_password_ : "");
+        {
+          // std::shared_lock lock(client_properties_mutex_);
+          for (auto& [host_name, props] : client_properties_) {
+            thumbnail_->SaveToThumbnail(
+                (char*)props->dst_buffer_, props->video_width_,
+                props->video_height_, host_name, props->remote_host_name_,
+                props->remember_password_ ? props->remote_password_ : "");

-          if (props->peer_) {
-            std::string client_id = (host_name == client_id_)
-                                        ? "C-" + std::string(client_id_)
-                                        : client_id_;
-            LOG_INFO("[{}] Leave connection [{}]", client_id, host_name);
-            LeaveConnection(props->peer_, host_name.c_str());
-            LOG_INFO("Destroy peer [{}]", client_id);
-            DestroyPeer(&props->peer_);
+            if (props->peer_) {
+              std::string client_id = (host_name == client_id_)
+                                          ? "C-" + std::string(client_id_)
+                                          : client_id_;
+              LOG_INFO("[{}] Leave connection [{}]", client_id, host_name);
+              LeaveConnection(props->peer_, host_name.c_str());
+              LOG_INFO("Destroy peer [{}]", client_id);
+              DestroyPeer(&props->peer_);
+            }
+
+            props->streaming_ = false;
+            props->remember_password_ = false;
+            props->connection_established_ = false;
+            props->audio_capture_button_pressed_ = false;
+
+            memset(&props->net_traffic_stats_, 0,
+                   sizeof(props->net_traffic_stats_));
+            SDL_SetWindowFullscreen(main_window_, false);
+            SDL_FlushEvents(STREAM_REFRESH_EVENT, STREAM_REFRESH_EVENT);
+            memset(audio_buffer_, 0, 720);
          }
-
-          props->streaming_ = false;
-          props->remember_password_ = false;
-          props->connection_established_ = false;
-          props->audio_capture_button_pressed_ = false;
-
-          memset(&props->net_traffic_stats_, 0,
-                 sizeof(props->net_traffic_stats_));
-          SDL_SetWindowFullscreen(main_window_, false);
-          SDL_FlushEvents(STREAM_REFRESH_EVENT, STREAM_REFRESH_EVENT);
-          memset(audio_buffer_, 0, 720);
        }
-        client_properties_.clear();
+
+        {
+          // std::unique_lock lock(client_properties_mutex_);
+          client_properties_.clear();
+        }

        rejoin_ = false;
        is_client_mode_ = false;
--- a/src/gui/render.h
+++ b/src/gui/render.h
@@ -13,7 +13,9 @@
 #include <chrono>
 #include <fstream>
 #include <mutex>
+#include <nlohmann/json.hpp>
 #include <optional>
+#include <shared_mutex>
 #include <string>
 #include <unordered_map>

@@ -29,6 +31,7 @@
 #include "screen_capturer_factory.h"
 #include "speaker_capturer_factory.h"
 #include "thumbnail.h"
+
 #if _WIN32
 #include "win_tray.h"
 #endif
@@ -68,10 +71,10 @@ class Render {
    float sub_stream_window_height_ = 720;
    float control_window_min_width_ = 20;
    float control_window_max_width_ = 230;
-    float control_window_min_height_ = 40;
-    float control_window_max_height_ = 170;
+    float control_window_min_height_ = 38;
+    float control_window_max_height_ = 180;
    float control_window_width_ = 230;
-    float control_window_height_ = 40;
+    float control_window_height_ = 38;
    float control_bar_pos_x_ = 0;
    float control_bar_pos_y_ = 30;
    float mouse_diff_control_bar_pos_x_ = 0;
@@ -151,6 +154,7 @@ class Render {
  int CreateStreamRenderWindow();
  int TitleBar(bool main_window);
  int MainWindow();
+  int UpdateNotificationWindow();
  int StreamWindow();
  int LocalWindow();
  int RemoteWindow();
@@ -165,18 +169,19 @@ class Render {
  bool ConnectionStatusWindow(
      std::shared_ptr<SubStreamWindowProperties>& props);
  int ShowRecentConnections();
+  void Hyperlink(const std::string& label, const std::string& url,
+                 const float window_width);

 private:
  int ConnectTo(const std::string& remote_id, const char* password,
                bool remember_password);
+  int UpdateWindowSizeWithDpiScale(float dpi_scale);
  int CreateMainWindow();
  int DestroyMainWindow();
  int CreateStreamWindow();
  int DestroyStreamWindow();
-  int SetupFontAndStyle();
-  int SetupMainWindow();
+  int SetupFontAndStyle(bool main_window);
  int DestroyMainWindowContext();
-  int SetupStreamWindow();
  int DestroyStreamWindowContext();
  int DrawMainWindow();
  int DrawStreamWindow();
@@ -184,6 +189,14 @@ class Render {
  int NetTrafficStats(std::shared_ptr<SubStreamWindowProperties>& props);
  void DrawConnectionStatusText(
      std::shared_ptr<SubStreamWindowProperties>& props);
+#ifdef __APPLE__
+  int RequestPermissionWindow();
+  bool CheckScreenRecordingPermission();
+  bool CheckAccessibilityPermission();
+  void OpenScreenRecordingPreferences();
+  void OpenAccessibilityPreferences();
+  bool DrawToggleSwitch(const char* id, bool active, bool enabled);
+#endif

 public:
  static void OnReceiveVideoBufferCb(const XVideoFrame* video_frame,
@@ -300,6 +313,8 @@ class Render {
  SDL_Window* main_window_ = nullptr;
  SDL_Renderer* main_renderer_ = nullptr;
  ImGuiContext* main_ctx_ = nullptr;
+  ImFont* main_windows_system_chinese_font_ = nullptr;
+  ImFont* stream_windows_system_chinese_font_ = nullptr;
  bool exit_ = false;
  const int sdl_refresh_ms_ = 16;  // ~60 FPS
 #if _WIN32
@@ -307,8 +322,10 @@ class Render {
 #endif

  // main window properties
-  std::string latest_version_ = "";
+  nlohmann::json latest_version_info_ = nlohmann::json{};
  bool update_available_ = false;
+  std::string latest_version_ = "";
+  std::string release_notes_ = "";
  bool start_mouse_controller_ = false;
  bool mouse_controller_is_started_ = false;
  bool start_screen_capturer_ = false;
@@ -325,6 +342,7 @@ class Render {
  int main_window_height_real_ = 540;
  float main_window_dpi_scaling_w_ = 1.0f;
  float main_window_dpi_scaling_h_ = 1.0f;
+  float dpi_scale_ = 1.0f;
  float main_window_width_default_ = 640;
  float main_window_height_default_ = 480;
  float main_window_width_ = 640;
@@ -349,6 +367,8 @@ class Render {
  float notification_window_height_ = 80;
  float about_window_width_ = 300;
  float about_window_height_ = 170;
+  float update_notification_window_width_ = 400;
+  float update_notification_window_height_ = 320;
  int screen_width_ = 1280;
  int screen_height_ = 720;
  int selected_display_ = 0;
@@ -362,6 +382,7 @@ class Render {
  int audio_len_ = 0;
  bool audio_buffer_fresh_ = false;
  bool need_to_rejoin_ = false;
+  std::chrono::steady_clock::time_point last_rejoin_check_time_;
  bool just_created_ = false;
  std::string controlled_remote_id_ = "";
  std::string focused_remote_id_ = "";
@@ -404,6 +425,7 @@ class Render {
  bool show_about_window_ = false;
  bool show_connection_status_window_ = false;
  bool show_reset_password_window_ = false;
+  bool show_update_notification_window_ = false;
  bool fullscreen_button_pressed_ = false;
  bool focus_on_input_widget_ = true;
  bool is_client_mode_ = false;
@@ -439,6 +461,9 @@ class Render {
  bool show_new_version_icon_in_menu_ = true;
  uint64_t new_version_icon_last_trigger_time_ = 0;
  uint64_t new_version_icon_render_start_time_ = 0;
+#ifdef __APPLE__
+  bool show_request_permission_window_ = true;
+#endif
  char client_id_[10] = "";
  char client_id_display_[12] = "";
  char client_id_with_password_[17] = "";
@@ -482,6 +507,7 @@ class Render {
  /* ------ sub stream window property start ------ */
  std::unordered_map<std::string, std::shared_ptr<SubStreamWindowProperties>>
      client_properties_;
+  std::shared_mutex client_properties_mutex_;
  void CloseTab(decltype(client_properties_)::iterator& it);
  /* ------ stream window property end ------ */

--- a/src/gui/render_callback.cpp
+++ b/src/gui/render_callback.cpp
@@ -21,13 +21,16 @@ int Render::SendKeyCommand(int key_code, bool is_down) {
  remote_action.k.key_value = key_code;

  if (!controlled_remote_id_.empty()) {
+    // std::shared_lock lock(client_properties_mutex_);
    if (client_properties_.find(controlled_remote_id_) !=
        client_properties_.end()) {
      auto props = client_properties_[controlled_remote_id_];
      if (props->connection_status_ == ConnectionStatus::Connected) {
        std::string msg = remote_action.to_json();
-        SendDataFrame(props->peer_, msg.c_str(), msg.size(),
-                      props->data_label_.c_str());
+        if (props->peer_) {
+          SendDataFrame(props->peer_, msg.c_str(), msg.size(),
+                        props->data_label_.c_str());
+        }
      }
    }
  }
@@ -42,6 +45,7 @@ int Render::ProcessMouseEvent(const SDL_Event& event) {
  float ratio_x, ratio_y = 0;
  RemoteAction remote_action;

+  // std::shared_lock lock(client_properties_mutex_);
  for (auto& it : client_properties_) {
    auto props = it.second;
    if (!props->control_mouse_) {
@@ -94,8 +98,10 @@ int Render::ProcessMouseEvent(const SDL_Event& event) {
      }

      std::string msg = remote_action.to_json();
-      SendDataFrame(props->peer_, msg.c_str(), msg.size(),
-                    props->data_label_.c_str());
+      if (props->peer_) {
+        SendDataFrame(props->peer_, msg.c_str(), msg.size(),
+                      props->data_label_.c_str());
+      }
    } else if (SDL_EVENT_MOUSE_WHEEL == event.type &&
               last_mouse_event.button.x >= props->stream_render_rect_.x &&
               last_mouse_event.button.x <= props->stream_render_rect_.x +
@@ -139,8 +145,10 @@ int Render::ProcessMouseEvent(const SDL_Event& event) {
          render_height;

      std::string msg = remote_action.to_json();
-      SendDataFrame(props->peer_, msg.c_str(), msg.size(),
-                    props->data_label_.c_str());
+      if (props->peer_) {
+        SendDataFrame(props->peer_, msg.c_str(), msg.size(),
+                      props->data_label_.c_str());
+      }
    }
  }

@@ -154,11 +162,14 @@ void Render::SdlCaptureAudioIn(void* userdata, Uint8* stream, int len) {
  }

  if (1) {
-    for (auto it : render->client_properties_) {
+    // std::shared_lock lock(render->client_properties_mutex_);
+    for (const auto& it : render->client_properties_) {
      auto props = it.second;
      if (props->connection_status_ == ConnectionStatus::Connected) {
-        SendAudioFrame(props->peer_, (const char*)stream, len,
-                       render->audio_label_.c_str());
+        if (props->peer_) {
+          SendAudioFrame(props->peer_, (const char*)stream, len,
+                         render->audio_label_.c_str());
+        }
      }
    }

@@ -207,6 +218,7 @@ void Render::OnReceiveVideoBufferCb(const XVideoFrame* video_frame,
  }

  std::string remote_id(user_id, user_id_size);
+  // std::shared_lock lock(render->client_properties_mutex_);
  if (render->client_properties_.find(remote_id) ==
      render->client_properties_.end()) {
    return;
@@ -302,6 +314,7 @@ void Render::OnReceiveDataBufferCb(const char* data, size_t size,
  }

  std::string remote_id(user_id, user_id_size);
+  // std::shared_lock lock(render->client_properties_mutex_);
  if (render->client_properties_.find(remote_id) !=
      render->client_properties_.end()) {
    // local
@@ -373,6 +386,7 @@ void Render::OnSignalStatusCb(SignalStatus status, const char* user_id,
    }

    std::string remote_id(client_id.begin() + 2, client_id.end());
+    // std::shared_lock lock(render->client_properties_mutex_);
    if (render->client_properties_.find(remote_id) ==
        render->client_properties_.end()) {
      return;
@@ -402,6 +416,7 @@ void Render::OnConnectionStatusCb(ConnectionStatus status, const char* user_id,
  if (!render) return;

  std::string remote_id(user_id, user_id_size);
+  // std::shared_lock lock(render->client_properties_mutex_);
  auto it = render->client_properties_.find(remote_id);
  auto props = (it != render->client_properties_.end()) ? it->second : nullptr;

@@ -428,7 +443,7 @@ void Render::OnConnectionStatusCb(ConnectionStatus status, const char* user_id,
      case ConnectionStatus::Closed: {
        props->connection_established_ = false;
        props->mouse_control_button_pressed_ = false;
-        if (props->dst_buffer_) {
+        if (props->dst_buffer_ && props->stream_texture_) {
          memset(props->dst_buffer_, 0, props->dst_buffer_capacity_);
          SDL_UpdateTexture(props->stream_texture_, NULL, props->dst_buffer_,
                            props->texture_width_);
@@ -469,12 +484,12 @@ void Render::OnConnectionStatusCb(ConnectionStatus status, const char* user_id,
        render->need_to_send_host_info_ = true;
        render->start_screen_capturer_ = true;
        render->start_speaker_capturer_ = true;
-        // #ifdef CROSSDESK_DEBUG
-        //         render->start_mouse_controller_ = false;
-        //         render->start_keyboard_capturer_ = false;
-        // #else
+#ifdef CROSSDESK_DEBUG
+        render->start_mouse_controller_ = false;
+        render->start_keyboard_capturer_ = false;
+#else
        render->start_mouse_controller_ = true;
-        // #endif
+#endif
        if (std::all_of(render->connection_status_.begin(),
                        render->connection_status_.end(), [](const auto& kv) {
                          return kv.first.find("web") != std::string::npos;
@@ -562,6 +577,7 @@ void Render::NetStatusReport(const char* client_id, size_t client_id_size,
  }

  std::string remote_id(user_id, user_id_size);
+  // std::shared_lock lock(render->client_properties_mutex_);
  if (render->client_properties_.find(remote_id) ==
      render->client_properties_.end()) {
    return;
--- a/src/gui/toolbars/control_bar.cpp
+++ b/src/gui/toolbars/control_bar.cpp
@@ -32,26 +32,33 @@ int LossRateDisplay(float loss_rate) {
 }

 int Render::ControlBar(std::shared_ptr<SubStreamWindowProperties>& props) {
-  ImGui::PushStyleVar(ImGuiStyleVar_FrameRounding, 3.0f);
+  ImGui::PushStyleVar(ImGuiStyleVar_FrameRounding, 3.0f * dpi_scale_);

  if (props->control_bar_expand_) {
-    ImGui::SetCursorPosX(props->is_control_bar_in_left_
-                             ? (props->control_window_width_ + 5.0f)
-                             : 38.0f);
+    float button_width = 24.0f * dpi_scale_;
+    float button_height = 24.0f * dpi_scale_;
+    float line_padding = 4.0f * dpi_scale_;
+
+    ImGui::SetCursorPosX(
+        props->is_control_bar_in_left_
+            ? (props->control_window_width_ + 5.0f * dpi_scale_)
+            : 50.0f * dpi_scale_);
    // mouse control button
    ImDrawList* draw_list = ImGui::GetWindowDrawList();

    if (props->is_control_bar_in_left_) {
-      draw_list->AddLine(ImVec2(ImGui::GetCursorScreenPos().x - 5.0f,
-                                ImGui::GetCursorScreenPos().y - 7.0f),
-                         ImVec2(ImGui::GetCursorScreenPos().x - 5.0f,
-                                ImGui::GetCursorScreenPos().y - 7.0f +
-                                    props->control_window_height_),
-                         IM_COL32(178, 178, 178, 255), 1.0f);
+      draw_list->AddLine(
+          ImVec2(ImGui::GetCursorScreenPos().x - 5.0f * dpi_scale_,
+                 ImGui::GetCursorScreenPos().y - 7.0f * dpi_scale_),
+          ImVec2(ImGui::GetCursorScreenPos().x - 5.0f * dpi_scale_,
+                 ImGui::GetCursorScreenPos().y - 7.0f * dpi_scale_ +
+                     props->control_window_height_),
+          IM_COL32(178, 178, 178, 255), 1.0f);
    }

    std::string display = ICON_FA_DISPLAY;
-    if (ImGui::Button(display.c_str(), ImVec2(25, 25))) {
+    ImGui::SetWindowFontScale(0.5f);
+    if (ImGui::Button(display.c_str(), ImVec2(button_width, button_height))) {
      ImGui::OpenPopup("display");
    }

@@ -75,11 +82,10 @@ int Render::ControlBar(std::shared_ptr<SubStreamWindowProperties>& props) {
        }
        props->display_selectable_hovered_ = ImGui::IsWindowHovered();
      }
-      ImGui::SetWindowFontScale(1.0f);
      ImGui::EndPopup();
    }

-    ImGui::SetWindowFontScale(0.6f);
+    ImGui::SetWindowFontScale(0.5f);
    ImVec2 text_size = ImGui::CalcTextSize(
        std::to_string(props->selected_display_ + 1).c_str());
    ImVec2 text_pos =
@@ -88,15 +94,16 @@ int Render::ControlBar(std::shared_ptr<SubStreamWindowProperties>& props) {
    ImGui::GetWindowDrawList()->AddText(
        text_pos, IM_COL32(0, 0, 0, 255),
        std::to_string(props->selected_display_ + 1).c_str());
-    ImGui::SetWindowFontScale(1.0f);

    ImGui::SameLine();
-    float disable_mouse_x = ImGui::GetCursorScreenPos().x + 4.0f;
-    float disable_mouse_y = ImGui::GetCursorScreenPos().y + 4.0f;
+    float mouse_x = ImGui::GetCursorScreenPos().x;
+    float mouse_y = ImGui::GetCursorScreenPos().y;
+    float disable_mouse_x = mouse_x + line_padding;
+    float disable_mouse_y = mouse_y + line_padding;
    std::string mouse = props->mouse_control_button_pressed_
                            ? ICON_FA_COMPUTER_MOUSE
                            : ICON_FA_COMPUTER_MOUSE;
-    if (ImGui::Button(mouse.c_str(), ImVec2(25, 25))) {
+    if (ImGui::Button(mouse.c_str(), ImVec2(button_width, button_height))) {
      if (props->connection_established_) {
        start_keyboard_capturer_ = !start_keyboard_capturer_;
        props->control_mouse_ = !props->control_mouse_;
@@ -108,30 +115,35 @@ int Render::ControlBar(std::shared_ptr<SubStreamWindowProperties>& props) {
                : localization::control_mouse[localization_language_index_];
      }
    }
+
    if (!props->mouse_control_button_pressed_) {
+      float line_thickness = 2.0f * dpi_scale_;
+      draw_list->AddLine(ImVec2(disable_mouse_x, disable_mouse_y),
+                         ImVec2(mouse_x + button_width - line_padding,
+                                mouse_y + button_height - line_padding),
+                         IM_COL32(0, 0, 0, 255), line_thickness);
      draw_list->AddLine(
-          ImVec2(disable_mouse_x, disable_mouse_y),
-          ImVec2(disable_mouse_x + 16.0f, disable_mouse_y + 14.2f),
-          IM_COL32(0, 0, 0, 255), 2.0f);
-      draw_list->AddLine(
-          ImVec2(disable_mouse_x - 1.2f, disable_mouse_y + 1.2f),
-          ImVec2(disable_mouse_x + 15.3f, disable_mouse_y + 15.4f),
+          ImVec2(disable_mouse_x - line_thickness * 0.7f,
+                 disable_mouse_y + line_thickness * 0.7f),
+          ImVec2(
+              mouse_x + button_width - line_padding - line_thickness * 0.7f,
+              mouse_y + button_height - line_padding + line_thickness * 0.7f),
          ImGui::IsItemHovered() ? IM_COL32(66, 150, 250, 255)
                                 : IM_COL32(179, 213, 253, 255),
-          2.0f);
+          line_thickness);
    }

    ImGui::SameLine();
    // audio capture button
-    float disable_audio_x = ImGui::GetCursorScreenPos().x + 4;
-    float disable_audio_y = ImGui::GetCursorScreenPos().y + 4.0f;
-    // std::string audio = audio_capture_button_pressed_ ? ICON_FA_VOLUME_HIGH
-    //                                                   :
-    //                                                   ICON_FA_VOLUME_XMARK;
+    float audio_x = ImGui::GetCursorScreenPos().x;
+    float audio_y = ImGui::GetCursorScreenPos().y;
+    float disable_audio_x = audio_x + line_padding;
+    float disable_audio_y = audio_y + line_padding;
+
    std::string audio = props->audio_capture_button_pressed_
                            ? ICON_FA_VOLUME_HIGH
                            : ICON_FA_VOLUME_HIGH;
-    if (ImGui::Button(audio.c_str(), ImVec2(25, 25))) {
+    if (ImGui::Button(audio.c_str(), ImVec2(button_width, button_height))) {
      if (props->connection_established_) {
        props->audio_capture_button_pressed_ =
            !props->audio_capture_button_pressed_;
@@ -148,17 +160,22 @@ int Render::ControlBar(std::shared_ptr<SubStreamWindowProperties>& props) {
                      props->data_label_.c_str());
      }
    }
+
    if (!props->audio_capture_button_pressed_) {
+      float line_thickness = 2.0f * dpi_scale_;
+      draw_list->AddLine(ImVec2(disable_audio_x, disable_audio_y),
+                         ImVec2(audio_x + button_width - line_padding,
+                                audio_y + button_height - line_padding),
+                         IM_COL32(0, 0, 0, 255), line_thickness);
      draw_list->AddLine(
-          ImVec2(disable_audio_x, disable_audio_y),
-          ImVec2(disable_audio_x + 16.0f, disable_audio_y + 14.2f),
-          IM_COL32(0, 0, 0, 255), 2.0f);
-      draw_list->AddLine(
-          ImVec2(disable_audio_x - 1.2f, disable_audio_y + 1.2f),
-          ImVec2(disable_audio_x + 15.3f, disable_audio_y + 15.4f),
+          ImVec2(disable_audio_x - line_thickness * 0.7f,
+                 disable_audio_y + line_thickness * 0.7f),
+          ImVec2(
+              audio_x + button_width - line_padding - line_thickness * 0.7f,
+              audio_y + button_height - line_padding + line_thickness * 0.7f),
          ImGui::IsItemHovered() ? IM_COL32(66, 150, 250, 255)
                                 : IM_COL32(179, 213, 253, 255),
-          2.0f);
+          line_thickness);
    }

    ImGui::SameLine();
@@ -170,7 +187,8 @@ int Render::ControlBar(std::shared_ptr<SubStreamWindowProperties>& props) {
      button_color_style_pushed = true;
    }
    std::string net_traffic_stats = ICON_FA_SIGNAL;
-    if (ImGui::Button(net_traffic_stats.c_str(), ImVec2(25, 25))) {
+    if (ImGui::Button(net_traffic_stats.c_str(),
+                      ImVec2(button_width, button_height))) {
      props->net_traffic_stats_button_pressed_ =
          !props->net_traffic_stats_button_pressed_;
      props->control_window_height_is_changing_ = true;
@@ -182,6 +200,7 @@ int Render::ControlBar(std::shared_ptr<SubStreamWindowProperties>& props) {
              : localization::show_net_traffic_stats
                    [localization_language_index_];
    }
+
    if (button_color_style_pushed) {
      ImGui::PopStyleColor();
      button_color_style_pushed = false;
@@ -191,7 +210,8 @@ int Render::ControlBar(std::shared_ptr<SubStreamWindowProperties>& props) {
    // fullscreen button
    std::string fullscreen =
        fullscreen_button_pressed_ ? ICON_FA_COMPRESS : ICON_FA_EXPAND;
-    if (ImGui::Button(fullscreen.c_str(), ImVec2(25, 25))) {
+    if (ImGui::Button(fullscreen.c_str(),
+                      ImVec2(button_width, button_height))) {
      fullscreen_button_pressed_ = !fullscreen_button_pressed_;
      props->fullscreen_button_label_ =
          fullscreen_button_pressed_
@@ -209,7 +229,8 @@ int Render::ControlBar(std::shared_ptr<SubStreamWindowProperties>& props) {
    ImGui::SameLine();
    // close button
    std::string close_button = ICON_FA_XMARK;
-    if (ImGui::Button(close_button.c_str(), ImVec2(25, 25))) {
+    if (ImGui::Button(close_button.c_str(),
+                      ImVec2(button_width, button_height))) {
      CleanupPeer(props);
    }

@@ -225,9 +246,10 @@ int Render::ControlBar(std::shared_ptr<SubStreamWindowProperties>& props) {
    }
  }

-  ImGui::SetCursorPosX(props->is_control_bar_in_left_
-                           ? (props->control_window_width_ * 2 - 20.0f)
-                           : 5.0f);
+  ImGui::SetCursorPosX(
+      props->is_control_bar_in_left_
+          ? (props->control_window_width_ * 2 - 20.0f * dpi_scale_)
+          : 5.0f * dpi_scale_);

  std::string control_bar =
      props->control_bar_expand_
@@ -235,13 +257,14 @@ int Render::ControlBar(std::shared_ptr<SubStreamWindowProperties>& props) {
                                            : ICON_FA_ANGLE_RIGHT)
          : (props->is_control_bar_in_left_ ? ICON_FA_ANGLE_RIGHT
                                            : ICON_FA_ANGLE_LEFT);
-  if (ImGui::Button(control_bar.c_str(), ImVec2(15, 25))) {
+  if (ImGui::Button(control_bar.c_str(),
+                    ImVec2(15.0f * dpi_scale_, 25.0f * dpi_scale_))) {
    props->control_bar_expand_ = !props->control_bar_expand_;
    props->control_bar_button_pressed_time_ = ImGui::GetTime();
    props->control_window_width_is_changing_ = true;

    if (!props->control_bar_expand_) {
-      props->control_window_height_ = 40;
+      props->control_window_height_ = 35 * dpi_scale_;
      props->net_traffic_stats_button_pressed_ = false;
    }
  }
@@ -259,8 +282,7 @@ int Render::NetTrafficStats(std::shared_ptr<SubStreamWindowProperties>& props) {
  ImGui::SetCursorPos(ImVec2(props->is_control_bar_in_left_
                                 ? (props->control_window_width_ + 5.0f)
                                 : 5.0f,
-                             40.0f));
-
+                             35.0f * dpi_scale_));
  if (ImGui::BeginTable("NetTrafficStats", 4, ImGuiTableFlags_BordersH,
                        ImVec2(props->control_window_max_width_ - 10.0f,
                               props->control_window_max_height_ - 60.0f))) {
--- a/src/gui/toolbars/status_bar.cpp
+++ b/src/gui/toolbars/status_bar.cpp
@@ -7,7 +7,7 @@ int Render::StatusBar() {
  ImGui::PushStyleColor(ImGuiCol_ChildBg, ImVec4(1.0f, 1.0f, 1.0f, 1.0f));
  static bool a, b, c, d, e;
  ImGui::SetNextWindowPos(
-      ImVec2(0, main_window_height_default_ - status_bar_height_ - 1),
+      ImVec2(0, main_window_height_ - status_bar_height_ - 1),
      ImGuiCond_Always);

  ImGui::BeginChild(
@@ -15,18 +15,20 @@ int Render::StatusBar() {
      ImGuiChildFlags_Border,
      ImGuiWindowFlags_NoDecoration | ImGuiWindowFlags_NoBringToFrontOnFocus);

-  ImVec2 dot_pos =
-      ImVec2(13, main_window_height_default_ - status_bar_height_ + 11.0f);
+  ImVec2 dot_pos = ImVec2(13.0f * dpi_scale_,
+                          (main_window_height_ - status_bar_height_) * 1.025f);
  ImDrawList* draw_list = ImGui::GetWindowDrawList();
-  draw_list->AddCircleFilled(dot_pos, 5.0f,
+  draw_list->AddCircleFilled(dot_pos, 5.0f * dpi_scale_,
                             ImColor(signal_connected_ ? 0.0f : 1.0f,
                                     signal_connected_ ? 1.0f : 0.0f, 0.0f),
                             100);
-  draw_list->AddCircle(dot_pos, 6.0f, ImColor(1.0f, 1.0f, 1.0f), 100);
+  draw_list->AddCircle(dot_pos, 6.0f * dpi_scale_, ImColor(1.0f, 1.0f, 1.0f),
+                       100);

  ImGui::SetWindowFontScale(0.6f);
  draw_list->AddText(
-      ImVec2(25, main_window_height_default_ - status_bar_height_ + 3.0f),
+      ImVec2(25.0f * dpi_scale_,
+             (main_window_height_ - status_bar_height_) * 1.003f),
      ImColor(0.0f, 0.0f, 0.0f),
      signal_connected_
          ? localization::signal_connected[localization_language_index_].c_str()
--- a/src/gui/toolbars/title_bar.cpp
+++ b/src/gui/toolbars/title_bar.cpp
@@ -2,7 +2,7 @@
 #include "rd_log.h"
 #include "render.h"

-#define BUTTON_PADDING 36.0f
+#define BUTTON_PADDING 36.0f * dpi_scale_
 #define NEW_VERSION_ICON_RENDER_TIME_INTERVAL 2000

 namespace crossdesk {
@@ -11,7 +11,6 @@ int Render::TitleBar(bool main_window) {
  ImGui::PushStyleColor(ImGuiCol_MenuBarBg, ImVec4(1.0f, 1.0f, 1.0f, 0.0f));
  ImGui::PushStyleColor(ImGuiCol_ChildBg, ImVec4(1.0f, 1.0f, 1.0f, 1.0f));
  ImGui::SetNextWindowPos(ImVec2(0, 0), ImGuiCond_Always);
-  ImGui::SetWindowFontScale(0.8f);
  ImGui::BeginChild(
      main_window ? "MainTitleBar" : "StreamTitleBar",
      ImVec2(main_window ? main_window_width_ : stream_window_width_,
@@ -19,23 +18,24 @@ int Render::TitleBar(bool main_window) {
      ImGuiChildFlags_Border,
      ImGuiWindowFlags_MenuBar | ImGuiWindowFlags_NoDecoration |
          ImGuiWindowFlags_NoBringToFrontOnFocus);
-  ImGui::SetWindowFontScale(1.0f);
+
  ImGui::PopStyleColor();

  ImDrawList* draw_list = ImGui::GetWindowDrawList();
  if (ImGui::BeginMenuBar()) {
+    ImGui::SetWindowFontScale(0.8f);
    ImGui::SetCursorPosX(
        (main_window ? main_window_width_ : stream_window_width_) -
-        (BUTTON_PADDING * 3 - 3));
+        (BUTTON_PADDING * 3 - 3.0f * dpi_scale_));
    ImGui::PushStyleColor(ImGuiCol_HeaderHovered, ImVec4(0, 0, 0, 0.1f));
    ImGui::PushStyleColor(ImGuiCol_HeaderActive,
                          ImVec4(1.0f, 1.0f, 1.0f, 1.0f));
    if (main_window) {
-      float bar_pos_x = ImGui::GetCursorPosX() + 6;
-      float bar_pos_y = ImGui::GetCursorPosY() + 15;
+      float bar_pos_x = ImGui::GetCursorPosX() + 6 * dpi_scale_;
+      float bar_pos_y = ImGui::GetCursorPosY() + 15 * dpi_scale_;
      std::string menu_button = "    ";  // ICON_FA_BARS;
      if (ImGui::BeginMenu(menu_button.c_str())) {
-        ImGui::SetWindowFontScale(0.5f);
+        ImGui::SetWindowFontScale(0.6f);
        if (ImGui::MenuItem(
                localization::settings[localization_language_index_].c_str())) {
          show_settings_window_ = true;
@@ -77,7 +77,7 @@ int Render::TitleBar(bool main_window) {

        if (update_available_ && ImGui::IsItemHovered()) {
          ImGui::BeginTooltip();
-          ImGui::SetWindowFontScale(0.5f);
+          ImGui::SetWindowFontScale(0.5f * dpi_scale_);
          std::string new_version_available_str =
              localization::new_version_available
                  [localization_language_index_] +
@@ -87,13 +87,12 @@ int Render::TitleBar(bool main_window) {
          ImGui::EndTooltip();
        }

-        ImGui::SetWindowFontScale(1.0f);
        ImGui::EndMenu();
      } else {
        show_new_version_icon_in_menu_ = true;
      }

-      float menu_bar_line_size = 15.0f;
+      float menu_bar_line_size = 15.0f * dpi_scale_;
      draw_list->AddLine(ImVec2(bar_pos_x, bar_pos_y - 6),
                         ImVec2(bar_pos_x + menu_bar_line_size, bar_pos_y - 6),
                         IM_COL32(0, 0, 0, 255));
@@ -136,6 +135,8 @@ int Render::TitleBar(bool main_window) {
        SelfHostedServerWindow();
        AboutWindow();
      }
+    } else {
+      ImGui::SetWindowFontScale(1.2f);
    }

    ImGui::PopStyleColor(2);
@@ -148,15 +149,15 @@ int Render::TitleBar(bool main_window) {
    ImGui::PushStyleColor(ImGuiCol_ButtonActive,
                          ImVec4(1.0f, 1.0f, 1.0f, 1.0f));

-    float minimize_pos_x = ImGui::GetCursorPosX() + 12;
-    float minimize_pos_y = ImGui::GetCursorPosY() + 15;
+    float minimize_pos_x = ImGui::GetCursorPosX() + 12.0f * dpi_scale_;
+    float minimize_pos_y = ImGui::GetCursorPosY() + 15.0f * dpi_scale_;
    std::string window_minimize_button = "##minimize";  // ICON_FA_MINUS;
    if (ImGui::Button(window_minimize_button.c_str(),
-                      ImVec2(BUTTON_PADDING, 30))) {
+                      ImVec2(BUTTON_PADDING, 30.0f * dpi_scale_))) {
      SDL_MinimizeWindow(main_window ? main_window_ : stream_window_);
    }
    draw_list->AddLine(ImVec2(minimize_pos_x, minimize_pos_y),
-                       ImVec2(minimize_pos_x + 12, minimize_pos_y),
+                       ImVec2(minimize_pos_x + 12 * dpi_scale_, minimize_pos_y),
                       IM_COL32(0, 0, 0, 255));
    ImGui::PopStyleColor(2);

@@ -167,33 +168,36 @@ int Render::TitleBar(bool main_window) {
                            ImVec4(1.0f, 1.0f, 1.0f, 1.0f));

      if (window_maximized_) {
-        float pos_x_top = ImGui::GetCursorPosX() + 11;
-        float pos_y_top = ImGui::GetCursorPosY() + 11;
-        float pos_x_bottom = ImGui::GetCursorPosX() + 13;
-        float pos_y_bottom = ImGui::GetCursorPosY() + 9;
+        float pos_x_top = ImGui::GetCursorPosX() + 11 * dpi_scale_;
+        float pos_y_top = ImGui::GetCursorPosY() + 11 * dpi_scale_;
+        float pos_x_bottom = ImGui::GetCursorPosX() + 13 * dpi_scale_;
+        float pos_y_bottom = ImGui::GetCursorPosY() + 9 * dpi_scale_;
        std::string window_restore_button =
            "##restore";  // ICON_FA_WINDOW_RESTORE;
        if (ImGui::Button(window_restore_button.c_str(),
-                          ImVec2(BUTTON_PADDING, 30))) {
+                          ImVec2(BUTTON_PADDING, 30.0f * dpi_scale_))) {
          SDL_RestoreWindow(stream_window_);
          window_maximized_ = false;
        }
-        draw_list->AddRect(ImVec2(pos_x_top, pos_y_top),
-                           ImVec2(pos_x_top + 12, pos_y_top + 12),
-                           IM_COL32(0, 0, 0, 255));
+        draw_list->AddRect(
+            ImVec2(pos_x_top, pos_y_top),
+            ImVec2(pos_x_top + 12 * dpi_scale_, pos_y_top + 12 * dpi_scale_),
+            IM_COL32(0, 0, 0, 255));
        draw_list->AddRect(ImVec2(pos_x_bottom, pos_y_bottom),
-                           ImVec2(pos_x_bottom + 12, pos_y_bottom + 12),
+                           ImVec2(pos_x_bottom + 12 * dpi_scale_,
+                                  pos_y_bottom + 12 * dpi_scale_),
                           IM_COL32(0, 0, 0, 255));
-        draw_list->AddRectFilled(ImVec2(pos_x_top + 1, pos_y_top + 1),
-                                 ImVec2(pos_x_top + 11, pos_y_top + 11),
-                                 IM_COL32(255, 255, 255, 255));
+        draw_list->AddRectFilled(
+            ImVec2(pos_x_top + 1 * dpi_scale_, pos_y_top + 1 * dpi_scale_),
+            ImVec2(pos_x_top + 11 * dpi_scale_, pos_y_top + 11 * dpi_scale_),
+            IM_COL32(255, 255, 255, 255));
      } else {
-        float maximize_pos_x = ImGui::GetCursorPosX() + 12;
-        float maximize_pos_y = ImGui::GetCursorPosY() + 10;
+        float maximize_pos_x = ImGui::GetCursorPosX() + 12 * dpi_scale_;
+        float maximize_pos_y = ImGui::GetCursorPosY() + 10 * dpi_scale_;
        std::string window_maximize_button =
            "##maximize";  // ICON_FA_SQUARE_FULL;
        if (ImGui::Button(window_maximize_button.c_str(),
-                          ImVec2(BUTTON_PADDING, 30))) {
+                          ImVec2(BUTTON_PADDING, 30.0f * dpi_scale_))) {
          SDL_MaximizeWindow(stream_window_);
          window_maximized_ = !window_maximized_;
        }
@@ -210,11 +214,12 @@ int Render::TitleBar(bool main_window) {
    ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4(1.0f, 0, 0, 1.0f));
    ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4(1.0f, 0, 0, 0.5f));

-    float xmark_pos_x = ImGui::GetCursorPosX() + 18;
-    float xmark_pos_y = ImGui::GetCursorPosY() + 16;
-    float xmark_size = 12.0f;
+    float xmark_pos_x = ImGui::GetCursorPosX() + 18 * dpi_scale_;
+    float xmark_pos_y = ImGui::GetCursorPosY() + 16 * dpi_scale_;
+    float xmark_size = 12.0f * dpi_scale_;
    std::string close_button = "##xmark";  // ICON_FA_XMARK;
-    if (ImGui::Button(close_button.c_str(), ImVec2(BUTTON_PADDING, 30))) {
+    if (ImGui::Button(close_button.c_str(),
+                      ImVec2(BUTTON_PADDING, 30.0f * dpi_scale_))) {
 #if _WIN32
      if (enable_minimize_to_tray_) {
        tray_->MinimizeToTray();
--- a/src/gui/windows/about_window.cpp
+++ b/src/gui/windows/about_window.cpp
@@ -8,8 +8,8 @@

 namespace crossdesk {

-void Hyperlink(const std::string& label, const std::string& url,
-               const float window_width) {
+void Render::Hyperlink(const std::string& label, const std::string& url,
+                       const float window_width) {
  ImGui::PushStyleColor(ImGuiCol_Text, IM_COL32(0, 0, 255, 255));
  ImGui::SetCursorPosX(window_width * 0.1f);
  ImGui::Text("%s", label.c_str());
--- a/src/gui/windows/control_window.cpp
+++ b/src/gui/windows/control_window.cpp
@@ -202,7 +202,6 @@ int Render::ControlWindow(std::shared_ptr<SubStreamWindowProperties>& props) {
                 : props->control_window_pos_.x,
             props->control_window_pos_.y),
      ImGuiCond_Always);
-  ImGui::SetWindowFontScale(0.5f);

  std::string control_child_window_title =
      props->remote_id_ + "ControlChildWindow";
@@ -210,7 +209,6 @@ int Render::ControlWindow(std::shared_ptr<SubStreamWindowProperties>& props) {
      control_child_window_title.c_str(),
      ImVec2(props->control_window_width_ * 2, props->control_window_height_),
      ImGuiChildFlags_Border, ImGuiWindowFlags_NoDecoration);
-  ImGui::SetWindowFontScale(1.0f);
  ImGui::PopStyleColor();

  ControlBar(props);
--- a/src/gui/windows/main_settings_window.cpp
+++ b/src/gui/windows/main_settings_window.cpp
@@ -38,10 +38,9 @@ int Render::SettingWindow() {

    // Settings
    {
-      static int settings_items_padding = 30;
+      static int settings_items_padding = 30 * dpi_scale_;
      int settings_items_offset = 0;

-      ImGui::SetWindowFontScale(0.5f);
      ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(1.0f, 1.0f, 1.0f, 1.0f));
      ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 5.0f);
      ImGui::PushStyleVar(ImGuiStyleVar_FrameRounding, 3.0f);
@@ -50,7 +49,6 @@ int Render::SettingWindow() {
                   nullptr,
                   ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoCollapse |
                       ImGuiWindowFlags_NoSavedSettings);
-      ImGui::SetWindowFontScale(1.0f);
      ImGui::SetWindowFontScale(0.5f);
      ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 1.0f);
      {
@@ -59,7 +57,7 @@ int Render::SettingWindow() {
            localization::language_en[localization_language_index_].c_str()};

        settings_items_offset += settings_items_padding;
-        ImGui::SetCursorPosY(settings_items_offset + 4);
+        ImGui::SetCursorPosY(settings_items_offset + 4 * dpi_scale_);
        ImGui::Text(
            "%s", localization::language[localization_language_index_].c_str());
        if (ConfigCenter::LANGUAGE::CHINESE == localization_language_) {
@@ -70,8 +68,17 @@ int Render::SettingWindow() {
        ImGui::SetCursorPosY(settings_items_offset);
        ImGui::SetNextItemWidth(SETTINGS_SELECT_WINDOW_WIDTH);

-        ImGui::Combo("##language", &language_button_value_, language_items,
-                     IM_ARRAYSIZE(language_items));
+        if (ImGui::BeginCombo("##language",
+                              language_items[language_button_value_])) {
+          ImGui::SetWindowFontScale(0.5f);
+          for (int i = 0; i < IM_ARRAYSIZE(language_items); i++) {
+            bool selected = (i == language_button_value_);
+            if (ImGui::Selectable(language_items[i], selected))
+              language_button_value_ = i;
+          }
+
+          ImGui::EndCombo();
+        }
      }

      ImGui::Separator();
@@ -90,7 +97,7 @@ int Render::SettingWindow() {
                .c_str()};

        settings_items_offset += settings_items_padding;
-        ImGui::SetCursorPosY(settings_items_offset + 4);
+        ImGui::SetCursorPosY(settings_items_offset + 4 * dpi_scale_);
        ImGui::Text(
            "%s",
            localization::video_quality[localization_language_index_].c_str());
@@ -103,8 +110,18 @@ int Render::SettingWindow() {
        ImGui::SetCursorPosY(settings_items_offset);
        ImGui::SetNextItemWidth(SETTINGS_SELECT_WINDOW_WIDTH);

-        ImGui::Combo("##video_quality", &video_quality_button_value_,
-                     video_quality_items, IM_ARRAYSIZE(video_quality_items));
+        if (ImGui::BeginCombo(
+                "##video_quality",
+                video_quality_items[video_quality_button_value_])) {
+          ImGui::SetWindowFontScale(0.5f);
+          for (int i = 0; i < IM_ARRAYSIZE(video_quality_items); i++) {
+            bool selected = (i == video_quality_button_value_);
+            if (ImGui::Selectable(video_quality_items[i], selected))
+              video_quality_button_value_ = i;
+          }
+
+          ImGui::EndCombo();
+        }
      }

      ImGui::Separator();
@@ -126,9 +143,18 @@ int Render::SettingWindow() {
        ImGui::SetCursorPosY(settings_items_offset);
        ImGui::SetNextItemWidth(SETTINGS_SELECT_WINDOW_WIDTH);

-        ImGui::Combo("##video_frame_rate", &video_frame_rate_button_value_,
-                     video_frame_rate_items,
-                     IM_ARRAYSIZE(video_frame_rate_items));
+        if (ImGui::BeginCombo(
+                "##video_frame_rate",
+                video_frame_rate_items[video_frame_rate_button_value_])) {
+          ImGui::SetWindowFontScale(0.5f);
+          for (int i = 0; i < IM_ARRAYSIZE(video_frame_rate_items); i++) {
+            bool selected = (i == video_frame_rate_button_value_);
+            if (ImGui::Selectable(video_frame_rate_items[i], selected))
+              video_frame_rate_button_value_ = i;
+          }
+
+          ImGui::EndCombo();
+        }
      }

      ImGui::Separator();
@@ -153,9 +179,18 @@ int Render::SettingWindow() {
        ImGui::SetCursorPosY(settings_items_offset);
        ImGui::SetNextItemWidth(SETTINGS_SELECT_WINDOW_WIDTH);

-        ImGui::Combo(
-            "##video_encode_format", &video_encode_format_button_value_,
-            video_encode_format_items, IM_ARRAYSIZE(video_encode_format_items));
+        if (ImGui::BeginCombo(
+                "##video_encode_format",
+                video_encode_format_items[video_encode_format_button_value_])) {
+          ImGui::SetWindowFontScale(0.5f);
+          for (int i = 0; i < IM_ARRAYSIZE(video_encode_format_items); i++) {
+            bool selected = (i == video_encode_format_button_value_);
+            if (ImGui::Selectable(video_encode_format_items[i], selected))
+              video_encode_format_button_value_ = i;
+          }
+
+          ImGui::EndCombo();
+        }
      }

 #if USE_CUDA && !defined(__aarch64__) && !defined(__arm__)
@@ -468,12 +503,10 @@ int Render::SettingWindow() {

        settings_window_pos_reset_ = true;
      }
-      ImGui::SetWindowFontScale(1.0f);
      ImGui::SetWindowFontScale(0.5f);
      ImGui::End();
      ImGui::PopStyleVar(2);
      ImGui::PopStyleColor();
-      ImGui::SetWindowFontScale(1.0f);
    }
  }

--- a/src/gui/windows/main_window.cpp
+++ b/src/gui/windows/main_window.cpp
@@ -9,7 +9,7 @@ int Render::MainWindow() {
  ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0.0f, 0.0f));
  ImGui::PushStyleColor(ImGuiCol_ChildBg, ImVec4(1.0f, 1.0f, 1.0f, 1.0f));
  ImGui::BeginChild("DeskWindow",
-                    ImVec2(main_window_width_default_, local_window_height_),
+                    ImVec2(main_window_width_, local_window_height_),
                    ImGuiChildFlags_Border,
                    ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoCollapse |
                        ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoTitleBar |
@@ -21,8 +21,8 @@ int Render::MainWindow() {

  ImDrawList* draw_list = ImGui::GetWindowDrawList();
  draw_list->AddLine(
-      ImVec2(main_window_width_default_ / 2, title_bar_height_ + 15.0f),
-      ImVec2(main_window_width_default_ / 2, title_bar_height_ + 225.0f),
+      ImVec2(main_window_width_ / 2, title_bar_height_ + 15.0f * dpi_scale_),
+      ImVec2(main_window_width_ / 2, title_bar_height_ + 225.0f * dpi_scale_),
      IM_COL32(0, 0, 0, 122), 1.0f);

  RemoteWindow();
@@ -32,6 +32,7 @@ int Render::MainWindow() {
  StatusBar();

  if (show_connection_status_window_) {
+    // std::unique_lock lock(client_properties_mutex_);
    for (auto it = client_properties_.begin();
         it != client_properties_.end();) {
      auto& props = it->second;
--- a/src/gui/windows/request_permission_window.mm
+++ b/src/gui/windows/request_permission_window.mm
@@ -0,0 +1,205 @@
+#include "layout.h"
+#include "localization.h"
+#include "rd_log.h"
+#include "render.h"
+
+#include <ApplicationServices/ApplicationServices.h>
+#include <CoreGraphics/CoreGraphics.h>
+#import <Foundation/Foundation.h>
+#include <unistd.h>
+#include <cstdlib>
+
+namespace crossdesk {
+
+bool Render::DrawToggleSwitch(const char* id, bool active, bool enabled) {
+  const float TRACK_HEIGHT = ImGui::GetFrameHeight();
+  const float TRACK_WIDTH = TRACK_HEIGHT * 1.8f;
+  const float TRACK_RADIUS = TRACK_HEIGHT * 0.5f;
+  const float KNOB_PADDING = 2.0f;
+  const float KNOB_HEIGHT = TRACK_HEIGHT - 4.0f;
+  const float KNOB_WIDTH = KNOB_HEIGHT * 1.2f;
+  const float KNOB_RADIUS = KNOB_HEIGHT * 0.5f;
+  const float DISABLED_ALPHA = 0.6f;
+  const float KNOB_ALPHA_DISABLED = 0.9f;
+
+  const ImVec4 COLOR_ACTIVE = ImVec4(0.0f, 0.0f, 1.0f, 1.0f);
+  const ImVec4 COLOR_ACTIVE_HOVER = ImVec4(0.26f, 0.59f, 0.98f, 1.0f);
+  const ImVec4 COLOR_INACTIVE = ImVec4(0.60f, 0.60f, 0.60f, 1.0f);
+  const ImVec4 COLOR_INACTIVE_HOVER = ImVec4(0.70f, 0.70f, 0.70f, 1.0f);
+  const ImVec4 COLOR_KNOB = ImVec4(1.0f, 1.0f, 1.0f, 1.0f);
+
+  ImDrawList* draw_list = ImGui::GetWindowDrawList();
+  ImVec2 track_pos = ImGui::GetCursorScreenPos();
+
+  ImGui::InvisibleButton(id, ImVec2(TRACK_WIDTH, TRACK_HEIGHT));
+  bool hovered = ImGui::IsItemHovered();
+  bool clicked = ImGui::IsItemClicked() && enabled;
+
+  ImVec4 track_color = active ? (hovered && enabled ? COLOR_ACTIVE_HOVER : COLOR_ACTIVE)
+                              : (hovered && enabled ? COLOR_INACTIVE_HOVER : COLOR_INACTIVE);
+
+  if (!enabled) {
+    track_color.w *= DISABLED_ALPHA;
+  }
+
+  ImVec2 track_min = ImVec2(track_pos.x, track_pos.y + 0.5f);
+  ImVec2 track_max = ImVec2(track_pos.x + TRACK_WIDTH, track_pos.y + TRACK_HEIGHT - 0.5f);
+  draw_list->AddRectFilled(track_min, track_max, ImGui::GetColorU32(track_color), TRACK_RADIUS);
+
+  float knob_position = active ? 1.0f : 0.0f;
+  float knob_min_x = track_pos.x + KNOB_PADDING;
+  float knob_max_x = track_pos.x + TRACK_WIDTH - KNOB_WIDTH - KNOB_PADDING;
+  float knob_x = knob_min_x + knob_position * (knob_max_x - knob_min_x);
+  float knob_y = track_pos.y + (TRACK_HEIGHT - KNOB_HEIGHT) * 0.5f;
+
+  ImVec4 knob_color = COLOR_KNOB;
+  if (!enabled) {
+    knob_color.w = KNOB_ALPHA_DISABLED;
+  }
+
+  ImVec2 knob_min = ImVec2(knob_x, knob_y);
+  ImVec2 knob_max = ImVec2(knob_x + KNOB_WIDTH, knob_y + KNOB_HEIGHT);
+  draw_list->AddRectFilled(knob_min, knob_max, ImGui::GetColorU32(knob_color), KNOB_RADIUS);
+
+  return clicked;
+}
+
+bool Render::CheckScreenRecordingPermission() {
+  // CGPreflightScreenCaptureAccess is available on macOS 10.15+
+  if (@available(macOS 10.15, *)) {
+    bool granted = CGPreflightScreenCaptureAccess();
+    return granted;
+  }
+  // for older macOS versions, assume permission is granted
+  return true;
+}
+
+bool Render::CheckAccessibilityPermission() {
+  NSDictionary* options = @{(__bridge id)kAXTrustedCheckOptionPrompt : @NO};
+  bool trusted = AXIsProcessTrustedWithOptions((__bridge CFDictionaryRef)options);
+  return trusted;
+}
+
+void Render::OpenAccessibilityPreferences() {
+  NSDictionary* options = @{(__bridge id)kAXTrustedCheckOptionPrompt : @YES};
+  AXIsProcessTrustedWithOptions((__bridge CFDictionaryRef)options);
+
+  system("open "
+         "\"x-apple.systempreferences:com.apple.preference.security?Privacy_"
+         "Accessibility\"");
+}
+
+void Render::OpenScreenRecordingPreferences() {
+  if (@available(macOS 10.15, *)) {
+    CGRequestScreenCaptureAccess();
+  }
+
+  system("open "
+         "\"x-apple.systempreferences:com.apple.preference.security?Privacy_"
+         "ScreenCapture\"");
+}
+
+int Render::RequestPermissionWindow() {
+  bool screen_recording_granted = CheckScreenRecordingPermission();
+  bool accessibility_granted = CheckAccessibilityPermission();
+
+  show_request_permission_window_ = !screen_recording_granted || !accessibility_granted;
+
+  if (!show_request_permission_window_) {
+    return 0;
+  }
+
+  const ImGuiViewport* viewport = ImGui::GetMainViewport();
+  float window_width = localization_language_index_ == 0 ? REQUEST_PERMISSION_WINDOW_WIDTH_CN
+                                                         : REQUEST_PERMISSION_WINDOW_WIDTH_EN;
+  float window_height = localization_language_index_ == 0 ? REQUEST_PERMISSION_WINDOW_HEIGHT_CN
+                                                          : REQUEST_PERMISSION_WINDOW_HEIGHT_EN;
+
+  float checkbox_padding = localization_language_index_ == 0
+                               ? REQUEST_PERMISSION_WINDOW_CHECKBOX_PADDING_CN
+                               : REQUEST_PERMISSION_WINDOW_CHECKBOX_PADDING_EN;
+
+  ImVec2 center_pos = ImVec2((viewport->WorkSize.x - window_width) * 0.5f + viewport->WorkPos.x,
+                             (viewport->WorkSize.y - window_height) * 0.5f + viewport->WorkPos.y);
+  ImGui::SetNextWindowPos(center_pos, ImGuiCond_Once);
+
+  ImGui::SetNextWindowSize(ImVec2(window_width, window_height), ImGuiCond_Always);
+
+  ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(1.0f, 1.0f, 1.0f, 1.0f));
+  ImGui::PushStyleVar(ImGuiStyleVar_WindowBorderSize, 1.0f);
+  ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 5.0f);
+  ImGui::PushStyleVar(ImGuiStyleVar_FrameRounding, 3.0f);
+  ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0.0f, 0.0f));
+
+  ImGui::Begin(
+      localization::request_permissions[localization_language_index_].c_str(), nullptr,
+      ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoSavedSettings);
+
+  ImGui::SetWindowFontScale(0.3f);
+
+  // use system font
+  if (main_windows_system_chinese_font_ != nullptr) {
+    ImGui::PushFont(main_windows_system_chinese_font_);
+  }
+
+  ImGui::SetCursorPosY(ImGui::GetCursorPosY() + ImGui::GetTextLineHeight() + 5.0f);
+  ImGui::SetCursorPosX(10.0f);
+  ImGui::TextWrapped(
+      "%s", localization::permission_required_message[localization_language_index_].c_str());
+
+  ImGui::Spacing();
+  ImGui::Spacing();
+  ImGui::Spacing();
+
+  // accessibility permission
+  ImGui::SetCursorPosX(10.0f);
+  ImGui::AlignTextToFramePadding();
+  ImGui::Text("1. %s:",
+              localization::accessibility_permission[localization_language_index_].c_str());
+  ImGui::SameLine();
+  ImGui::AlignTextToFramePadding();
+  ImGui::SetCursorPosX(checkbox_padding);
+  if (accessibility_granted) {
+    DrawToggleSwitch("accessibility_toggle_on", true, false);
+  } else {
+    if (DrawToggleSwitch("accessibility_toggle", accessibility_granted, !accessibility_granted)) {
+      OpenAccessibilityPreferences();
+    }
+  }
+
+  ImGui::Spacing();
+
+  // screen recording permission
+  ImGui::SetCursorPosX(10.0f);
+  ImGui::AlignTextToFramePadding();
+  ImGui::Text("2. %s:",
+              localization::screen_recording_permission[localization_language_index_].c_str());
+  ImGui::SameLine();
+  ImGui::AlignTextToFramePadding();
+  ImGui::SetCursorPosX(checkbox_padding);
+  if (screen_recording_granted) {
+    ImGui::SetCursorPosX(ImGui::GetCursorPosX() + 10.0f);
+    DrawToggleSwitch("screen_recording_toggle_on", true, false);
+  } else {
+    if (DrawToggleSwitch("screen_recording_toggle", screen_recording_granted,
+                         !screen_recording_granted)) {
+      OpenScreenRecordingPreferences();
+    }
+  }
+
+  ImGui::SetWindowFontScale(1.0f);
+  ImGui::SetWindowFontScale(0.45f);
+
+  // pop system font
+  if (main_windows_system_chinese_font_ != nullptr) {
+    ImGui::PopFont();
+  }
+
+  ImGui::End();
+  ImGui::SetWindowFontScale(1.0f);
+  ImGui::PopStyleVar(4);
+  ImGui::PopStyleColor();
+
+  return 0;
+}
+}  // namespace crossdesk
--- a/src/gui/windows/server_settings_window.cpp
+++ b/src/gui/windows/server_settings_window.cpp
@@ -54,12 +54,13 @@ int Render::ShowSimpleFileBrowser() {
  if (show_file_browser_) {
    ImGui::PushItemFlag(ImGuiItemFlags_AutoClosePopups, false);

-    float fixed_width = 130.0f;
+    float fixed_width = 130.0f * dpi_scale_;
    ImGui::SetNextItemWidth(fixed_width);
    ImGui::SetNextWindowSizeConstraints(ImVec2(fixed_width, 0),
                                        ImVec2(fixed_width, 100.0f));

    if (ImGui::BeginCombo("##select_a_file", display_text.c_str(), 0)) {
+      ImGui::SetWindowFontScale(0.5f);
      bool file_selected = false;

      auto roots = GetRootEntries();
@@ -154,7 +155,7 @@ int Render::SelfHostedServerWindow() {

    // Settings
    {
-      static int settings_items_padding = 30;
+      static int settings_items_padding = 30 * dpi_scale_;
      int settings_items_offset = 0;

      ImGui::SetWindowFontScale(0.5f);
--- a/src/gui/windows/stream_window.cpp
+++ b/src/gui/windows/stream_window.cpp
@@ -32,12 +32,15 @@ void Render::DrawConnectionStatusText(
 }

 void Render::CloseTab(decltype(client_properties_)::iterator& it) {
-  CleanupPeer(it->second);
-  it = client_properties_.erase(it);
-  if (client_properties_.empty()) {
-    SDL_Event event;
-    event.type = SDL_EVENT_QUIT;
-    SDL_PushEvent(&event);
+  // std::unique_lock lock(client_properties_mutex_);
+  if (it != client_properties_.end()) {
+    CleanupPeer(it->second);
+    it = client_properties_.erase(it);
+    if (client_properties_.empty()) {
+      SDL_Event event;
+      event.type = SDL_EVENT_QUIT;
+      SDL_PushEvent(&event);
+    }
  }
 }

@@ -50,20 +53,24 @@ int Render::StreamWindow() {
  ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0.0f, 0.0f));
  ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(0, 0, 0, 0));
  ImGui::PushStyleColor(ImGuiCol_Border, ImVec4(0, 0, 0, 0));
-  ImGui::Begin("VideoBg", nullptr,
-               ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoDecoration |
-                   ImGuiWindowFlags_NoBringToFrontOnFocus |
-                   ImGuiWindowFlags_NoDocking);
+  bool video_bg_opened = ImGui::Begin(
+      "VideoBg", nullptr,
+      ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoDecoration |
+          ImGuiWindowFlags_NoBringToFrontOnFocus | ImGuiWindowFlags_NoDocking);
  ImGui::PopStyleColor(2);
  ImGui::PopStyleVar();

+  if (!video_bg_opened) {
+    return 0;
+  }
+
  ImGuiWindowFlags stream_window_flag =
      ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_NoDecoration |
      ImGuiWindowFlags_NoBringToFrontOnFocus | ImGuiWindowFlags_NoMove;

  if (!fullscreen_button_pressed_) {
-    ImGui::SetNextWindowPos(ImVec2(20, 0), ImGuiCond_Always);
-    ImGui::SetNextWindowSize(ImVec2(0, 20), ImGuiCond_Always);
+    ImGui::SetNextWindowPos(ImVec2(20.0f * dpi_scale_, 0), ImGuiCond_Always);
+    ImGui::SetNextWindowSize(ImVec2(0, 30.0f * dpi_scale_), ImGuiCond_Always);
    ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0.0f, 8.0f));
    ImGui::PushStyleVar(ImGuiStyleVar_WindowBorderSize, 0.0f);
    ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(0, 0, 0, 0.0f));
@@ -79,22 +86,32 @@ int Render::StreamWindow() {
                               ImGuiTabBarFlags_AutoSelectNewTabs)) {
      is_tab_bar_hovered_ = ImGui::IsWindowHovered();

+      // std::shared_lock lock(client_properties_mutex_);
      for (auto it = client_properties_.begin();
           it != client_properties_.end();) {
        auto& props = it->second;
        if (!props->tab_opened_) {
-          CloseTab(it);
+          std::string remote_id_to_close = props->remote_id_;
+          // lock.unlock();
+          {
+            // std::unique_lock unique_lock(client_properties_mutex_);
+            auto close_it = client_properties_.find(remote_id_to_close);
+            if (close_it != client_properties_.end()) {
+              CloseTab(close_it);
+            }
+          }
+          // lock.lock();
+          it = client_properties_.begin();
          continue;
        }

-        ImGui::SetWindowFontScale(0.6f);
        std::string tab_label =
            enable_srtp_
                ? std::string(ICON_FA_SHIELD_HALVED) + " " + props->remote_id_
                : props->remote_id_;
        if (ImGui::BeginTabItem(tab_label.c_str(), &props->tab_opened_)) {
          props->tab_selected_ = true;
-          ImGui::SetWindowFontScale(1.0f);
+          ImGui::SetWindowFontScale(0.6f * dpi_scale_);

          ImGui::SetNextWindowSize(
              ImVec2(stream_window_width_, stream_window_height_),
@@ -122,12 +139,25 @@ int Render::StreamWindow() {
          focused_remote_id_ = props->remote_id_;

          if (!props->peer_) {
-            it = client_properties_.erase(it);
-            if (client_properties_.empty()) {
-              SDL_Event event;
-              event.type = SDL_EVENT_QUIT;
-              SDL_PushEvent(&event);
+            std::string remote_id_to_erase = props->remote_id_;
+            // lock.unlock();
+            {
+              // std::unique_lock unique_lock(client_properties_mutex_);
+              auto erase_it = client_properties_.find(remote_id_to_erase);
+              if (erase_it != client_properties_.end()) {
+                erase_it = client_properties_.erase(erase_it);
+                if (client_properties_.empty()) {
+                  SDL_Event event;
+                  event.type = SDL_EVENT_QUIT;
+                  SDL_PushEvent(&event);
+                }
+              }
            }
+            // lock.lock();
+            ImGui::End();
+            ImGui::EndTabItem();
+            it = client_properties_.begin();
+            continue;
          } else {
            DrawConnectionStatusText(props);
            ++it;
@@ -137,7 +167,6 @@ int Render::StreamWindow() {
          ImGui::EndTabItem();
        } else {
          props->tab_selected_ = false;
-          ImGui::SetWindowFontScale(1.0f);
          ++it;
        }
      }
@@ -147,11 +176,22 @@ int Render::StreamWindow() {

    ImGui::End();  // End TabBar
  } else {
+    // std::shared_lock lock(client_properties_mutex_);
    for (auto it = client_properties_.begin();
         it != client_properties_.end();) {
      auto& props = it->second;
      if (!props->tab_opened_) {
-        CloseTab(it);
+        std::string remote_id_to_close = props->remote_id_;
+        // lock.unlock();
+        {
+          // std::unique_lock unique_lock(client_properties_mutex_);
+          auto close_it = client_properties_.find(remote_id_to_close);
+          if (close_it != client_properties_.end()) {
+            CloseTab(close_it);
+          }
+        }
+        // lock.lock();
+        it = client_properties_.begin();
        continue;
      }

@@ -181,12 +221,23 @@ int Render::StreamWindow() {
        if (!props->peer_) {
          fullscreen_button_pressed_ = false;
          SDL_SetWindowFullscreen(stream_window_, false);
-          it = client_properties_.erase(it);
-          if (client_properties_.empty()) {
-            SDL_Event event;
-            event.type = SDL_EVENT_QUIT;
-            SDL_PushEvent(&event);
+          std::string remote_id_to_erase = props->remote_id_;
+          // lock.unlock();
+          {
+            // std::unique_lock unique_lock(client_properties_mutex_);
+            auto erase_it = client_properties_.find(remote_id_to_erase);
+            if (erase_it != client_properties_.end()) {
+              client_properties_.erase(erase_it);
+              if (client_properties_.empty()) {
+                SDL_Event event;
+                event.type = SDL_EVENT_QUIT;
+                SDL_PushEvent(&event);
+              }
+            }
          }
+          // lock.lock();
+          it = client_properties_.begin();
+          continue;
        } else {
          DrawConnectionStatusText(props);
          ++it;
--- a/src/gui/windows/update_notification_window.cpp
+++ b/src/gui/windows/update_notification_window.cpp
@@ -0,0 +1,213 @@
+#include <algorithm>
+#include <cstdlib>
+#include <string>
+
+#include "layout.h"
+#include "localization.h"
+#include "rd_log.h"
+#include "render.h"
+
+namespace crossdesk {
+
+std::string CleanMarkdown(const std::string& markdown) {
+  std::string result = markdown;
+
+  // remove # title mark
+  size_t pos = 0;
+  while (pos < result.length()) {
+    if (result[pos] == '\n' || pos == 0) {
+      size_t line_start = (result[pos] == '\n') ? pos + 1 : pos;
+      if (line_start < result.length() && result[line_start] == '#') {
+        size_t hash_end = line_start;
+        while (hash_end < result.length() &&
+               (result[hash_end] == '#' || result[hash_end] == ' ')) {
+          hash_end++;
+        }
+
+        result.erase(line_start, hash_end - line_start);
+        pos = line_start;
+        continue;
+      }
+    }
+    pos++;
+  }
+
+  // remove ** bold mark
+  pos = 0;
+  while ((pos = result.find("**", pos)) != std::string::npos) {
+    result.erase(pos, 2);
+  }
+
+  // remove all spaces
+  result.erase(std::remove(result.begin(), result.end(), ' '), result.end());
+
+  // replace . with 、
+  pos = 0;
+  while ((pos = result.find('.', pos)) != std::string::npos) {
+    result.replace(pos, 1, "、");
+    pos += 1;  // Move to next position after the replacement
+  }
+
+  return result;
+}
+
+int Render::UpdateNotificationWindow() {
+  if (show_update_notification_window_ && update_available_) {
+    const ImGuiViewport* viewport = ImGui::GetMainViewport();
+
+    float window_width = update_notification_window_width_;
+    float window_height = update_notification_window_height_;
+
+    // #ifdef __APPLE__
+    //     float font_scale = 0.3f;
+    // #else
+    //     float font_scale = 0.5f;
+    // #endif
+
+    float button_width = 35.0f * dpi_scale_;
+    float button_height = 25.0f * dpi_scale_;
+
+    ImGui::SetNextWindowPos(
+        ImVec2(
+            (viewport->WorkSize.x - viewport->WorkPos.x - window_width) / 2,
+            (viewport->WorkSize.y - viewport->WorkPos.y - window_height) / 2),
+        ImGuiCond_FirstUseEver);
+
+    ImGui::SetNextWindowSize(ImVec2(window_width, window_height));
+
+    ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(1.0f, 1.0f, 1.0f, 1.0f));
+    ImGui::PushStyleVar(ImGuiStyleVar_WindowBorderSize, 1.0f);
+    ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 5.0f);
+    ImGui::PushStyleVar(ImGuiStyleVar_FrameRounding, 3.0f);
+    ImGui::Begin(
+        localization::notification[localization_language_index_].c_str(),
+        nullptr,
+        ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoCollapse |
+            ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_NoTitleBar);
+
+    ImGui::SetCursorPosY(ImGui::GetCursorPosY() + window_height * 0.05f);
+
+    // title: new version available
+    ImGui::SetCursorPosX(window_width * 0.1f);
+    ImGui::SetWindowFontScale(0.6f);
+    std::string title =
+        localization::new_version_available[localization_language_index_] +
+        ": v" + latest_version_;
+    ImGui::Text("%s", title.c_str());
+    ImGui::SetWindowFontScale(0.1f);
+
+    ImGui::Spacing();
+
+    // website link
+    std::string download_text =
+        localization::access_website[localization_language_index_] +
+        "https://crossdesk.cn";
+    ImGui::SetWindowFontScale(0.5f);
+    Hyperlink(download_text, "https://crossdesk.cn", window_width);
+    ImGui::SetWindowFontScale(1.0f);
+
+    ImGui::Spacing();
+
+    float scrollable_height =
+        window_height - UPDATE_NOTIFICATION_RESERVED_HEIGHT;
+
+    if (main_windows_system_chinese_font_ != nullptr) {
+      ImGui::PushFont(main_windows_system_chinese_font_);
+    }
+    // scrollable content area
+    ImGui::SetCursorPosX(window_width * 0.05f);
+    ImGui::BeginChild("ScrollableContent",
+                      ImVec2(window_width * 0.9f, scrollable_height),
+                      ImGuiChildFlags_Border, ImGuiWindowFlags_None);
+    ImGui::SetWindowFontScale(0.6f);
+    // set text wrap position to current available width (accounts for
+    // scrollbar)
+    float wrap_pos = ImGui::GetContentRegionAvail().x;
+    ImGui::PushTextWrapPos(wrap_pos);
+
+    // release name
+    if (latest_version_info_.contains("releaseName") &&
+        latest_version_info_["releaseName"].is_string() &&
+        !latest_version_info_["releaseName"].empty()) {
+      ImGui::SetCursorPosX(window_width * 0.05f);
+      std::string release_name =
+          latest_version_info_["releaseName"].get<std::string>();
+      ImGui::TextWrapped("%s", release_name.c_str());
+      ImGui::Spacing();
+    }
+
+    // release notes
+    if (!release_notes_.empty()) {
+      ImGui::SetCursorPosX(window_width * 0.05f);
+      std::string cleaned_notes = CleanMarkdown(release_notes_);
+      ImGui::TextWrapped("%s", cleaned_notes.c_str());
+      ImGui::Spacing();
+    }
+
+    // release date
+    if (latest_version_info_.contains("releaseDate") &&
+        latest_version_info_["releaseDate"].is_string() &&
+        !latest_version_info_["releaseDate"].empty()) {
+      ImGui::SetCursorPosX(window_width * 0.05f);
+      std::string date_label =
+          localization::release_date[localization_language_index_];
+      std::string release_date = latest_version_info_["releaseDate"];
+      std::string date_text = date_label + release_date;
+      ImGui::Text("%s", date_text.c_str());
+      ImGui::Spacing();
+    }
+
+    // pop text wrap position
+    ImGui::PopTextWrapPos();
+
+    ImGui::EndChild();
+
+    // pop system font
+    if (main_windows_system_chinese_font_ != nullptr) {
+      ImGui::PopFont();
+    }
+
+    ImGui::Spacing();
+
+    if (ConfigCenter::LANGUAGE::CHINESE == localization_language_) {
+      ImGui::SetCursorPosX(UPDATE_NOTIFICATION_OK_BUTTON_PADDING_CN);
+    } else {
+      ImGui::SetCursorPosX(UPDATE_NOTIFICATION_OK_BUTTON_PADDING_EN);
+    }
+
+    ImGui::SetWindowFontScale(0.5f);
+    // update button
+    if (ImGui::Button(
+            localization::update[localization_language_index_].c_str(),
+            ImVec2(button_width, button_height))) {
+      // open download page
+      std::string url = "https://crossdesk.cn";
+#if defined(_WIN32)
+      std::string cmd = "start " + url;
+#elif defined(__APPLE__)
+      std::string cmd = "open " + url;
+#else
+      std::string cmd = "xdg-open " + url;
+#endif
+      system(cmd.c_str());
+      show_update_notification_window_ = false;
+    }
+
+    ImGui::SameLine();
+
+    if (ImGui::Button(
+            localization::cancel[localization_language_index_].c_str(),
+            ImVec2(button_width, button_height))) {
+      show_update_notification_window_ = false;
+    }
+
+    ImGui::SetWindowFontScale(1.0f);
+
+    ImGui::End();
+    ImGui::PopStyleVar(3);
+    ImGui::PopStyleColor();
+  }
+  return 0;
+}
+
+}  // namespace crossdesk
--- a/src/path_manager/path_manager.cpp
+++ b/src/path_manager/path_manager.cpp
@@ -36,7 +36,7 @@ std::filesystem::path PathManager::GetLogPath() {
 #elif __APPLE__
  return GetHome() + "/Library/Logs/" + app_name_;
 #else
-  return GetCachePath() / app_name_ / "logs";
+  return GetCachePath() / "logs";
 #endif
 }

--- a/src/screen_capturer/linux/screen_capturer_x11.cpp
+++ b/src/screen_capturer/linux/screen_capturer_x11.cpp
@@ -1,6 +1,9 @@
 #include "screen_capturer_x11.h"

+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
 #include <X11/extensions/Xfixes.h>
+#include <X11/extensions/Xrandr.h>

 #include <chrono>
 #include <thread>
--- a/src/screen_capturer/linux/screen_capturer_x11.h
+++ b/src/screen_capturer/linux/screen_capturer_x11.h
@@ -7,10 +7,14 @@
 #ifndef _SCREEN_CAPTURER_X11_H_
 #define _SCREEN_CAPTURER_X11_H_

-#include <X11/Xlib.h>
-#include <X11/Xutil.h>
-#include <X11/extensions/Xrandr.h>
-#include <X11/extensions/Xfixes.h>
+// forward declarations for X11 types
+struct _XDisplay;
+typedef struct _XDisplay Display;
+typedef unsigned long Window;
+struct _XRRScreenResources;
+typedef struct _XRRScreenResources XRRScreenResources;
+struct _XImage;
+typedef struct _XImage XImage;

 #include <atomic>
 #include <cstring>
@@ -43,6 +47,9 @@ class ScreenCapturerX11 : public ScreenCapturer {

  void OnFrame();

+ private:
+  void DrawCursor(XImage* image, int x, int y);
+
 private:
  Display* display_ = nullptr;
  Window root_ = 0;
@@ -60,12 +67,8 @@ class ScreenCapturerX11 : public ScreenCapturer {
  cb_desktop_data callback_;
  std::vector<DisplayInfo> display_info_list_;

-  // 缓冲区
  std::vector<uint8_t> y_plane_;
  std::vector<uint8_t> uv_plane_;
-  
-  // 鼠标光标相关
-  void DrawCursor(XImage* image, int x, int y);
 };
 }  // namespace crossdesk
 #endif
--- a/src/screen_capturer/macosx/screen_capturer_sck_impl.mm
+++ b/src/screen_capturer/macosx/screen_capturer_sck_impl.mm
@@ -196,14 +196,26 @@ ScreenCapturerSckImpl::~ScreenCapturerSckImpl() {

 int ScreenCapturerSckImpl::Init(const int fps, cb_desktop_data cb) {
  _on_data = cb;
+  fps_ = fps;
+
+  if (@available(macOS 10.15, *)) {
+    bool has_permission = CGPreflightScreenCaptureAccess();
+    if (!has_permission) {
+      LOG_ERROR("Screen recording permission not granted");
+      return -1;
+    }
+  }

  dispatch_semaphore_t sema = dispatch_semaphore_create(0);
  __block SCShareableContent *content = nil;
+  __block NSError *capture_error = nil;

  [SCShareableContent
      getShareableContentWithCompletionHandler:^(SCShareableContent *result, NSError *error) {
        if (error) {
-          NSLog(@"Failed to get shareable content: %@", error);
+          capture_error = error;
+          LOG_ERROR("Failed to get shareable content: {}",
+                    std::string([error.localizedDescription UTF8String]));
        } else {
          content = result;
        }
@@ -211,9 +223,10 @@ int ScreenCapturerSckImpl::Init(const int fps, cb_desktop_data cb) {
      }];
  dispatch_semaphore_wait(sema, DISPATCH_TIME_FOREVER);

-  if (!content || content.displays.count == 0) {
-    LOG_ERROR("Failed to get display info");
-    return 0;
+  if (capture_error || !content || content.displays.count == 0) {
+    LOG_ERROR("Failed to get display info, error: {}",
+              std::string([capture_error.localizedDescription UTF8String]));
+    return -1;
  }

  CGDirectDisplayID displays[10];
@@ -252,6 +265,16 @@ int ScreenCapturerSckImpl::Init(const int fps, cb_desktop_data cb) {
 }

 int ScreenCapturerSckImpl::Start(bool show_cursor) {
+  if (permanent_error_) {
+    LOG_ERROR("Cannot start capturer: permanent error occurred");
+    return -1;
+  }
+
+  if (display_info_list_.empty()) {
+    LOG_ERROR("Cannot start capturer: display info not initialized");
+    return -1;
+  }
+
  show_cursor_ = show_cursor;
  StartOrReconfigureCapturer();
  return 0;
@@ -307,17 +330,17 @@ void ScreenCapturerSckImpl::OnShareableContentCreated(SCShareableContent *conten
    return;
  }

-  if (!content.displays.count) {
+  if (!content.displays || content.displays.count == 0) {
    LOG_ERROR("getShareableContent returned no displays");
    permanent_error_ = true;
    return;
  }

-  SCDisplay *captured_display;
+  SCDisplay *captured_display = nil;
  {
    std::lock_guard<std::mutex> lock(lock_);
    for (SCDisplay *display in content.displays) {
-      if (current_display_ == display.displayID) {
+      if (current_display_ != 0 && current_display_ == display.displayID) {
        LOG_WARN("current display: {}, name: {}", current_display_,
                 display_id_name_map_[current_display_]);
        captured_display = display;
@@ -326,13 +349,33 @@ void ScreenCapturerSckImpl::OnShareableContentCreated(SCShareableContent *conten
    }
    if (!captured_display) {
      captured_display = content.displays.firstObject;
-      current_display_ = captured_display.displayID;
+      if (captured_display) {
+        current_display_ = captured_display.displayID;
+      }
    }
  }

+  if (!captured_display) {
+    LOG_ERROR("Failed to find valid display");
+    permanent_error_ = true;
+    return;
+  }
+
  SCContentFilter *filter = [[SCContentFilter alloc] initWithDisplay:captured_display
                                                    excludingWindows:@[]];
+  if (!filter) {
+    LOG_ERROR("Failed to create SCContentFilter");
+    permanent_error_ = true;
+    return;
+  }
+
  SCStreamConfiguration *config = [[SCStreamConfiguration alloc] init];
+  if (!config) {
+    LOG_ERROR("Failed to create SCStreamConfiguration");
+    permanent_error_ = true;
+    return;
+  }
+
  config.pixelFormat = kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange;
  config.showsCursor = show_cursor_;
  config.width = filter.contentRect.size.width * filter.pointPixelScale;
@@ -423,11 +466,28 @@ void ScreenCapturerSckImpl::OnNewCVPixelBuffer(CVPixelBufferRef pixelBuffer,
 }

 void ScreenCapturerSckImpl::StartOrReconfigureCapturer() {
-  // The copy is needed to avoid capturing `this` in the Objective-C block. Accessing `helper_`
-  // inside the block is equivalent to `this->helper_` and would crash (UAF) if `this` is
-  // deleted before the block is executed.
+  if (permanent_error_) {
+    LOG_ERROR("Cannot reconfigure capturer: permanent error occurred");
+    return;
+  }
+
+  if (@available(macOS 10.15, *)) {
+    bool has_permission = CGPreflightScreenCaptureAccess();
+    if (!has_permission) {
+      LOG_ERROR("Screen recording permission not granted");
+      permanent_error_ = true;
+      return;
+    }
+  }
+
  SckHelper *local_helper = helper_;
  auto handler = ^(SCShareableContent *content, NSError *error) {
+    if (error) {
+      LOG_ERROR("getShareableContent failed: {}",
+                std::string([error.localizedDescription UTF8String]));
+      [local_helper onShareableContentCreated:nil];
+      return;
+    }
    [local_helper onShareableContentCreated:content];
  };
  [SCShareableContent getShareableContentWithCompletionHandler:handler];
--- a/src/screen_capturer/windows/screen_capturer_wgc.cpp
+++ b/src/screen_capturer/windows/screen_capturer_wgc.cpp
@@ -77,12 +77,14 @@ ScreenCapturerWgc::~ScreenCapturerWgc() {
  CleanUp();

  if (nv12_frame_) {
-    delete nv12_frame_;
+    delete[] nv12_frame_;
    nv12_frame_ = nullptr;
+    nv12_width_ = 0;
+    nv12_height_ = 0;
  }

  if (nv12_frame_scaled_) {
-    delete nv12_frame_scaled_;
+    delete[] nv12_frame_scaled_;
    nv12_frame_scaled_ = nullptr;
  }
 }
@@ -215,13 +217,14 @@ int ScreenCapturerWgc::Resume(int monitor_index) {
 }

 int ScreenCapturerWgc::Stop() {
+  running_ = false;
+
  for (int i = 0; i < sessions_.size(); i++) {
    if (sessions_[i].running_) {
      sessions_[i].session_->Stop();
      sessions_[i].running_ = false;
    }
  }
-  running_ = false;

  return 0;
 }
@@ -256,18 +259,61 @@ int ScreenCapturerWgc::SwitchTo(int monitor_index) {

 void ScreenCapturerWgc::OnFrame(const WgcSession::wgc_session_frame& frame,
                                int id) {
+  if (!running_ || !on_data_) {
+    return;
+  }
+
+  std::lock_guard<std::mutex> lock(frame_mutex_);
+
  if (on_data_) {
-    if (!nv12_frame_) {
-      nv12_frame_ = new unsigned char[frame.width * frame.height * 3 / 2];
+    if (id < 0 || id >= static_cast<int>(display_info_list_.size())) {
+      LOG_ERROR("WGC OnFrame invalid display index: {}", id);
+      return;
    }

-    libyuv::ARGBToNV12((const uint8_t*)frame.data, frame.width * 4,
-                       (uint8_t*)nv12_frame_, frame.width,
-                       (uint8_t*)(nv12_frame_ + frame.width * frame.height),
-                       frame.width, frame.width, frame.height);
+    if (!frame.data || frame.row_pitch == 0) {
+      LOG_ERROR("WGC OnFrame received invalid frame: data={}, row_pitch={}",
+                (void*)frame.data, frame.row_pitch);
+      return;
+    }

-    on_data_(nv12_frame_, frame.width * frame.height * 3 / 2, frame.width,
-             frame.height, display_info_list_[id].name.c_str());
+    // calculate the maximum width that can be contained in one row according to
+    // row_pitch (BGRA: 4 bytes per pixel), and take the minimum with logical
+    // width to avoid out-of-bounds access.
+    unsigned int max_width_by_pitch = frame.row_pitch / 4u;
+    int logical_width = static_cast<int>(
+        frame.width < max_width_by_pitch ? frame.width : max_width_by_pitch);
+
+    // libyuv::ARGBToNV12 requires even width/height
+    int even_width = logical_width & ~1;
+    int even_height = static_cast<int>(frame.height) & ~1;
+
+    if (even_width <= 0 || even_height <= 0) {
+      LOG_ERROR(
+          "WGC OnFrame invalid frame size after adjust: width={} "
+          "(frame.width={}, max_by_pitch={}), height={}",
+          logical_width, frame.width, max_width_by_pitch, frame.height);
+      return;
+    }
+
+    int nv12_size = even_width * even_height * 3 / 2;
+
+    if (!nv12_frame_ || nv12_width_ != even_width ||
+        nv12_height_ != even_height) {
+      delete[] nv12_frame_;
+      nv12_frame_ = new unsigned char[nv12_size];
+      nv12_width_ = even_width;
+      nv12_height_ = even_height;
+    }
+
+    libyuv::ARGBToNV12((const uint8_t*)frame.data,
+                       static_cast<int>(frame.row_pitch), (uint8_t*)nv12_frame_,
+                       even_width,
+                       (uint8_t*)(nv12_frame_ + even_width * even_height),
+                       even_width, even_width, even_height);
+
+    on_data_(nv12_frame_, nv12_size, even_width, even_height,
+             display_info_list_[id].name.c_str());
  }
 }

--- a/src/screen_capturer/windows/screen_capturer_wgc.h
+++ b/src/screen_capturer/windows/screen_capturer_wgc.h
@@ -3,6 +3,7 @@

 #include <atomic>
 #include <functional>
+#include <mutex>
 #include <string>
 #include <thread>
 #include <vector>
@@ -65,6 +66,10 @@ class ScreenCapturerWgc : public ScreenCapturer,

  unsigned char* nv12_frame_ = nullptr;
  unsigned char* nv12_frame_scaled_ = nullptr;
+  int nv12_width_ = 0;
+  int nv12_height_ = 0;
+
+  std::mutex frame_mutex_;
 };
 }  // namespace crossdesk
 #endif
--- a/src/speaker_capturer/macosx/speaker_capturer_macosx.mm
+++ b/src/speaker_capturer/macosx/speaker_capturer_macosx.mm
@@ -38,8 +38,50 @@ class SpeakerCapturerMacosx;

  if (_owner->cb_ && dataPtr && length > 0 && asbd) {
    std::vector<short> out_pcm16;
-    // ... 数据转换逻辑保持不变 ...
-    // 调用回调
+    if (asbd->mFormatFlags & kAudioFormatFlagIsFloat) {
+      int channels = asbd->mChannelsPerFrame;
+      int samples = (int)(length / sizeof(float));
+      float* floatData = (float*)dataPtr;
+      std::vector<short> pcm16(samples);
+      for (int i = 0; i < samples; ++i) {
+        float v = floatData[i];
+        if (v > 1.0f) v = 1.0f;
+        if (v < -1.0f) v = -1.0f;
+        pcm16[i] = (short)(v * 32767.0f);
+      }
+
+      if (channels > 1) {
+        int mono_samples = samples / channels;
+        out_pcm16.resize(mono_samples);
+        for (int i = 0; i < mono_samples; ++i) {
+          int sum = 0;
+          for (int c = 0; c < channels; ++c) {
+            sum += pcm16[i * channels + c];
+          }
+          out_pcm16[i] = sum / channels;
+        }
+      } else {
+        out_pcm16 = std::move(pcm16);
+      }
+    } else if (asbd->mBitsPerChannel == 16) {
+      int channels = asbd->mChannelsPerFrame;
+      int samples = (int)(length / 2);
+      short* src = (short*)dataPtr;
+      if (channels > 1) {
+        int mono_samples = samples / channels;
+        out_pcm16.resize(mono_samples);
+        for (int i = 0; i < mono_samples; ++i) {
+          int sum = 0;
+          for (int c = 0; c < channels; ++c) {
+            sum += src[i * channels + c];
+          }
+          out_pcm16[i] = sum / channels;
+        }
+      } else {
+        out_pcm16.assign(src, src + samples);
+      }
+    }
+
    size_t frame_bytes = 960;  // 480 * 2
    size_t total_bytes = out_pcm16.size() * sizeof(short);
    unsigned char* p = (unsigned char*)out_pcm16.data();
@@ -48,6 +90,7 @@ class SpeakerCapturerMacosx;
    }
  }
 }
+
@end

 namespace crossdesk {
--- a/src/thumbnail/thumbnail.cpp
+++ b/src/thumbnail/thumbnail.cpp
@@ -156,6 +156,12 @@ Thumbnail::~Thumbnail() {
  }
 }

+int Thumbnail::SetThumbnailDpiScale(float dpi_scale) {
+  thumbnail_width_ = static_cast<int>(thumbnail_width_ * dpi_scale);
+  thumbnail_height_ = static_cast<int>(thumbnail_height_ * dpi_scale);
+  return 0;
+}
+
 int Thumbnail::SaveToThumbnail(const char* yuv420p, int width, int height,
                               const std::string& remote_id,
                               const std::string& host_name,
--- a/src/thumbnail/thumbnail.h
+++ b/src/thumbnail/thumbnail.h
@@ -33,6 +33,8 @@ class Thumbnail {
  ~Thumbnail();

 public:
+  int SetThumbnailDpiScale(float dpi_scale);
+
  int SaveToThumbnail(const char* yuv420p, int width, int height,
                      const std::string& remote_id,
                      const std::string& host_name,
--- a/src/version_checker/version_checker.cpp
+++ b/src/version_checker/version_checker.cpp
@@ -4,19 +4,15 @@
 * Copyright (c) 2025 by DI JUNKUN, All Rights Reserved.
 */

-#ifndef _VERSION_CHECKER_H_
-#define _VERSION_CHECKER_H_
+#include "version_checker.h"

 #include <httplib.h>

 #include <iostream>
-#include <nlohmann/json.hpp>
 #include <sstream>
 #include <string>
 #include <vector>

-using json = nlohmann::json;
-
 namespace crossdesk {

 static std::string latest_release_date_ = "";
@@ -129,7 +125,7 @@ bool IsNewerVersionWithDate(const std::string& current_version,
  return false;
 }

-std::string CheckUpdate() {
+nlohmann::json CheckUpdate() {
  httplib::Client cli("https://version.crossdesk.cn");

  cli.set_connection_timeout(5);
@@ -138,28 +134,25 @@ std::string CheckUpdate() {
  if (auto res = cli.Get("/version.json")) {
    if (res->status == 200) {
      try {
-        auto j = json::parse(res->body);
-        std::string latest = j["version"];
+        auto j = nlohmann::json::parse(res->body);
        if (j.contains("releaseDate") && j["releaseDate"].is_string()) {
          latest_release_date_ = j["releaseDate"];
        } else {
          latest_release_date_ = "";
        }
-        return latest;
+        return j;
      } catch (std::exception&) {
        latest_release_date_ = "";
-        return "";
+        return nlohmann::json{};
      }
    } else {
      latest_release_date_ = "";
-      return "";
+      return nlohmann::json{};
    }
  } else {
    latest_release_date_ = "";
-    return "";
+    return nlohmann::json{};
  }
 }

-std::string GetLatestReleaseDate() { return latest_release_date_; }
-}  // namespace crossdesk
-#endif
+}  // namespace crossdesk
--- a/src/version_checker/version_checker.h
+++ b/src/version_checker/version_checker.h
@@ -7,11 +7,12 @@
 #ifndef _VERSION_CHECKER_H_
 #define _VERSION_CHECKER_H_

+#include <nlohmann/json.hpp>
 #include <string>

 namespace crossdesk {

-std::string CheckUpdate();
+nlohmann::json CheckUpdate();

 bool IsNewerVersion(const std::string& current, const std::string& latest);

--- a/xmake.lua
+++ b/xmake.lua
@@ -29,7 +29,7 @@ if is_mode("debug") then
 end

 add_requires("spdlog 1.14.1", {system = false})
-add_requires("imgui v1.91.5-docking", {configs = {sdl3 = true, sdl3_renderer = true}})
+add_requires("imgui v1.92.1-docking", {configs = {sdl3 = true, sdl3_renderer = true}})
 add_requires("openssl3 3.3.2", {system = false})
 add_requires("nlohmann_json 3.11.3")
 add_requires("cpp-httplib v0.26.0", {configs = {ssl = true}})
@@ -182,6 +182,8 @@ target("gui")
    if is_os("windows") then
        add_files("src/gui/tray/*.cpp")
        add_includedirs("src/gui/tray", {public = true})
+    elseif is_os("macosx") then
+        add_files("src/gui/windows/*.mm")
    end

 target("crossdesk")
Author	SHA1	Message	Date
dijunkun	2e52818f6f	fix: correct array deletion and improve state management in WGC screen capturer	2025-12-01 23:06:46 +08:00
dijunkun	b50f386713	[fix] fix system_chinese_font_ usage to avoid dangling font pointer after closing stream window	2025-12-01 23:03:45 +08:00
dijunkun	280e011ae4	[fix] update RecentConnectionsWindow layout	2025-12-01 17:16:28 +08:00
dijunkun	8d09bf53c3	[fix] fix UpdateNotificationWindow dpi scaling	2025-12-01 13:52:39 +08:00
dijunkun	131b4f1795	[fix] resolve compilation errors on Linux	2025-12-01 13:07:36 +08:00
dijunkun	7d3ecf789d	[fix] fix control bar dpi scaling	2025-12-01 11:30:35 +08:00
dijunkun	37797bf873	[fix] fix DPI scaling issues	2025-12-01 04:54:30 +08:00
dijunkun	91d42b6561	[fix] macOS: fix audio capture, refs #29	2025-11-30 17:13:02 +08:00
dijunkun	feb9f2f460	[revert] revert to the pre-lock version	2025-11-28 11:44:08 +08:00
Junkun Di	9c1753c78c	[chroe] add issue templates	2025-11-28 11:34:22 +08:00
dijunkun	7370ff5b30	[chore] add HelloGitHub badge	2025-11-28 11:10:41 +08:00
dijunkun	f6eda34dbd	[fix] fix dead lock during connecting	2025-11-28 10:02:57 +08:00
dijunkun	5d9a0a3ea5	[fix] fix dead lock during peer init	2025-11-28 09:32:21 +08:00
dijunkun	3d8249bffa	[fix] use lock and null pointer checks to prevent crashes	2025-11-28 00:41:29 +08:00
dijunkun	82f32cbe8f	[fix] fix incorrect peer reference in AddVideoStream call	2025-11-27 23:53:27 +08:00
dijunkun	56da2f99f3	[chore] update Linux log path configuration	2025-11-27 23:20:14 +08:00
dijunkun	e6c72fe558	[feat] remove screen capture and accessibility permission when reinstall	2025-11-27 17:35:15 +08:00
dijunkun	a964c6bbf5	[fix] call log after log initialzation, refs #36 , #29	2025-11-27 16:09:08 +08:00
dijunkun	239da373d0	[feat] attempt to rejoin once per second	2025-11-27 04:20:29 +08:00
dijunkun	217cfb091d	[feat] display version info on startup	2025-11-27 04:18:08 +08:00
dijunkun	3c3c7b9ae0	[fix] fix crash when screen recording permission is not granted on macOS, refs #29	2025-11-27 03:32:16 +08:00
dijunkun	f14bdb7fe8	[feat] optimize UpdateNotificationWindow UI appearance	2025-11-27 03:07:55 +08:00
dijunkun	c0a98f97c3	[feat] optimize RequestPermissionWindow UI appearance	2025-11-27 02:40:33 +08:00
dijunkun	0ab6686eb8	[feat] use DrawToggleSwitch to request permission	2025-11-26 23:32:04 +08:00
dijunkun	76b475450b	[feat] request macOS system permissions by showing a prompt on startup	2025-11-26 18:18:40 +08:00
dijunkun	5d1e1b5667	[fix] remove permissions on uninstall and request permissions during installation for MacOS	2025-11-26 16:11:49 +08:00
dijunkun	c3b8b1374a	[chore] update README	2025-11-25 16:30:14 +08:00
dijunkun	7c940d6b15	[ci] fix tag error in update-version-json.yml	2025-11-25 03:30:28 +08:00
dijunkun	86501b05dd	[feat] show notification window if there is a new version avaliable	2025-11-25 01:20:16 +08:00
dijunkun	01ebed9b37	[ci] upload release notes to version.json	2025-11-25 01:19:12 +08:00