[fix] restore Windows cursor capture and web input control

apps/desktop/src/platform/windows/screen_capturer/cursor_frame_compositor.h

@@ -0,0 +1,93 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2026-09-18
+ * Copyright (c) 2026 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _CURSOR_FRAME_COMPOSITOR_H_
+#define _CURSOR_FRAME_COMPOSITOR_H_
+
+#include <windows.h>
+
+#include <cstdint>
+#include <cstring>
+
+#include "cursor_draw.h"
+
+namespace crossdesk {
+
+// Keep the source texture free of cursors. Each draw starts from the original
+// pixels, including when a static desktop is replayed after a cursor toggle.
+class CursorFrameCompositor {
+ public:
+  CursorFrameCompositor() = default;
+  ~CursorFrameCompositor() { Reset(); }
+  CursorFrameCompositor(const CursorFrameCompositor&) = delete;
+  CursorFrameCompositor& operator=(const CursorFrameCompositor&) = delete;
+
+  const uint8_t* Draw(const uint8_t* source, int stride, int width, int height,
+                      const CURSORINFO& cursor, int left, int top) {
+    if (!source || width <= 0 || height <= 0 || !EnsureSurface(width, height))
+      return nullptr;
+    const size_t row_bytes = static_cast<size_t>(width) * 4;
+    for (int y = 0; y < height; ++y) {
+      std::memcpy(static_cast<uint8_t*>(bits_) + y * row_bytes,
+                  source + static_cast<size_t>(y) * stride, row_bytes);
+    }
+    const bool drawn =
+        DrawCursorInCapture(dc_, cursor, left, top, width, height);
+    GdiFlush();
+    return drawn ? static_cast<const uint8_t*>(bits_) : nullptr;
+  }
+
+ private:
+  bool EnsureSurface(int width, int height) {
+    if (bits_ && width_ == width && height_ == height) return true;
+    Reset();
+    dc_ = CreateCompatibleDC(nullptr);
+    if (!dc_) return false;
+    BITMAPINFO info{};
+    info.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+    info.bmiHeader.biWidth = width;
+    info.bmiHeader.biHeight = -height;
+    info.bmiHeader.biPlanes = 1;
+    info.bmiHeader.biBitCount = 32;
+    info.bmiHeader.biCompression = BI_RGB;
+    bitmap_ = CreateDIBSection(dc_, &info, DIB_RGB_COLORS, &bits_, nullptr, 0);
+    if (!bitmap_ || !bits_) {
+      Reset();
+      return false;
+    }
+    previous_ = SelectObject(dc_, bitmap_);
+    if (!previous_ || previous_ == HGDI_ERROR) {
+      previous_ = nullptr;
+      Reset();
+      return false;
+    }
+    width_ = width;
+    height_ = height;
+    return true;
+  }
+
+  void Reset() {
+    if (dc_ && previous_) SelectObject(dc_, previous_);
+    if (bitmap_) DeleteObject(bitmap_);
+    if (dc_) DeleteDC(dc_);
+    dc_ = nullptr;
+    bitmap_ = nullptr;
+    previous_ = nullptr;
+    bits_ = nullptr;
+    width_ = height_ = 0;
+  }
+
+  HDC dc_ = nullptr;
+  HBITMAP bitmap_ = nullptr;
+  HGDIOBJ previous_ = nullptr;
+  void* bits_ = nullptr;
+  int width_ = 0;
+  int height_ = 0;
+};
+
+}  // namespace crossdesk
+
+#endif

apps/desktop/src/platform/windows/screen_capturer/screen_capturer_dxgi.cpp

@@ -7,9 +7,12 @@
 #include <string>
 #include <vector>
 
+#include "captured_cursor_state.h"
+#include "cursor_frame_compositor.h"
 #include "dxgi_cursor_state.h"
 #include "libyuv.h"
 #include "rd_log.h"
+#include "windows_thread_dpi.h"
 
 namespace crossdesk {
 
@@ -295,12 +298,103 @@ void ScreenCapturerDxgi::ReleaseDuplication() {
   duplication_.Reset();
 }
 
+bool ScreenCapturerDxgi::ConvertFrame(int frame_monitor, bool* cursor_embedded,
+                                      CursorFrameCompositor& compositor) {
+  *cursor_embedded = false;
+  if (!staging_) return false;
+  D3D11_TEXTURE2D_DESC src_desc{};
+  staging_->GetDesc(&src_desc);
+  D3D11_MAPPED_SUBRESOURCE mapped{};
+  const HRESULT hr =
+      d3d_context_->Map(staging_.Get(), 0, D3D11_MAP_READ, 0, &mapped);
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  auto pixels = static_cast<const uint8_t*>(mapped.pData);
+  int stride = static_cast<int>(mapped.RowPitch);
+  int logical_width = static_cast<int>(src_desc.Width);
+  int logical_height = static_cast<int>(src_desc.Height);
+  libyuv::RotationMode rotation = libyuv::kRotate0;
+  switch (rotation_) {
+    case DXGI_MODE_ROTATION_ROTATE90:
+      rotation = libyuv::kRotate90;
+      break;
+    case DXGI_MODE_ROTATION_ROTATE180:
+      rotation = libyuv::kRotate180;
+      break;
+    case DXGI_MODE_ROTATION_ROTATE270:
+      rotation = libyuv::kRotate270;
+      break;
+    default:
+      break;
+  }
+  if (rotation != libyuv::kRotate0) {
+    const bool swap_axes = rotation != libyuv::kRotate180;
+    const int rotated_width = swap_axes ? logical_height : logical_width;
+    rotated_frame_.resize(static_cast<size_t>(logical_width) * logical_height *
+                          4);
+    if (libyuv::ARGBRotate(pixels, stride, rotated_frame_.data(),
+                           rotated_width * 4, logical_width, logical_height,
+                           rotation) != 0) {
+      d3d_context_->Unmap(staging_.Get(), 0);
+      return false;
+    }
+    pixels = rotated_frame_.data();
+    stride = rotated_width * 4;
+    if (swap_axes) std::swap(logical_width, logical_height);
+  }
+  int even_width = logical_width & ~1;
+  int even_height = logical_height & ~1;
+  if (even_width <= 0 || even_height <= 0) {
+    d3d_context_->Unmap(staging_.Get(), 0);
+    return false;
+  }
+
+  if (show_cursor_.load(std::memory_order_relaxed) && frame_monitor >= 0 &&
+      frame_monitor < static_cast<int>(display_info_list_.size())) {
+    const auto& display = display_info_list_[frame_monitor];
+    CURSORINFO cursor{};
+    cursor.cbSize = sizeof(cursor);
+    if (GetCursorInfo(&cursor) &&
+        SharedDxgiCursorState().ShouldDrawCursor(
+            (cursor.flags & CURSOR_SHOWING) != 0, display.handle)) {
+      if (const auto* composited =
+              compositor.Draw(pixels, stride, even_width, even_height, cursor,
+                              display.left, display.top)) {
+        pixels = composited;
+        stride = even_width * 4;
+        *cursor_embedded = true;
+      }
+    }
+  }
+
+  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;
+  }
+
+  const int converted =
+      libyuv::ARGBToNV12(pixels, stride, nv12_frame_, even_width,
+                         nv12_frame_ + even_width * even_height, even_width,
+                         even_width, even_height);
+
+  d3d_context_->Unmap(staging_.Get(), 0);
+  return converted == 0;
+}
+
 void ScreenCapturerDxgi::CaptureLoop() {
+  ScopedWindowsPhysicalCoordinates physical_coordinates;
+  CursorFrameCompositor cursor_compositor;
   const int timeout_ms = (std::max)(1, 1000 / (std::max)(1, fps_));
   bool cached_frame_valid = false;
+  bool cached_cursor_embedded = false;
   int cached_monitor = -1;
   uint64_t cached_generation = 0;
-  std::vector<uint8_t> rotated_frame;
   auto last_duplication_retry =
       std::chrono::steady_clock::now() - std::chrono::milliseconds(1000);
   while (running_) {
@@ -336,8 +430,19 @@ void ScreenCapturerDxgi::CaptureLoop() {
       // successfully acquired for this monitor to keep delivering static frames.
       if (cached_frame_valid && cached_generation == duplication_generation_ &&
           cached_monitor == monitor_index_.load() && callback_ && nv12_frame_) {
+        // Recompose from the clean staging texture while showing a cursor, or
+        // once after disabling it. Never replay a baked-in stale cursor.
+        if (show_cursor_.load(std::memory_order_relaxed) ||
+            cached_cursor_embedded) {
+          if (!ConvertFrame(cached_monitor, &cached_cursor_embedded,
+                            cursor_compositor)) {
+            cached_frame_valid = false;
+            continue;
+          }
+        }
         const auto stream_id = MakeDisplayStreamId(cached_monitor);
         capture_lock.unlock();
+        CapturedCursorFrameScope cursor_scope(cached_cursor_embedded);
         callback_(nv12_frame_, nv12_width_ * nv12_height_ * 3 / 2, nv12_width_,
                   nv12_height_, stream_id.c_str(), nullptr);
       }
@@ -397,80 +502,22 @@ void ScreenCapturerDxgi::CaptureLoop() {
 
     d3d_context_->CopyResource(staging_.Get(), acquired_tex.Get());
 
-    D3D11_MAPPED_SUBRESOURCE mapped{};
+    bool cursor_embedded = false;
-    hr = d3d_context_->Map(staging_.Get(), 0, D3D11_MAP_READ, 0, &mapped);
+    const bool converted =
-    if (FAILED(hr)) {
+        ConvertFrame(frame_monitor, &cursor_embedded, cursor_compositor);
-      duplication_->ReleaseFrame();
-      continue;
-    }
-
-    auto pixels = static_cast<const uint8_t*>(mapped.pData);
-    int stride = static_cast<int>(mapped.RowPitch);
-    int logical_width = static_cast<int>(src_desc.Width);
-    int logical_height = static_cast<int>(src_desc.Height);
-    libyuv::RotationMode rotation = libyuv::kRotate0;
-    switch (rotation_) {
-      case DXGI_MODE_ROTATION_ROTATE90:
-        rotation = libyuv::kRotate90;
-        break;
-      case DXGI_MODE_ROTATION_ROTATE180:
-        rotation = libyuv::kRotate180;
-        break;
-      case DXGI_MODE_ROTATION_ROTATE270:
-        rotation = libyuv::kRotate270;
-        break;
-      default:
-        break;
-    }
-    if (rotation != libyuv::kRotate0) {
-      const bool swap_axes = rotation != libyuv::kRotate180;
-      const int rotated_width = swap_axes ? logical_height : logical_width;
-      rotated_frame.resize(static_cast<size_t>(logical_width) * logical_height *
-                           4);
-      if (libyuv::ARGBRotate(pixels, stride, rotated_frame.data(),
-                             rotated_width * 4, logical_width, logical_height,
-                             rotation) != 0) {
-        d3d_context_->Unmap(staging_.Get(), 0);
-        duplication_->ReleaseFrame();
-        continue;
-      }
-      pixels = rotated_frame.data();
-      stride = rotated_width * 4;
-      if (swap_axes) std::swap(logical_width, logical_height);
-    }
-    int even_width = logical_width & ~1;
-    int even_height = logical_height & ~1;
-    if (even_width <= 0 || even_height <= 0) {
-      d3d_context_->Unmap(staging_.Get(), 0);
-      duplication_->ReleaseFrame();
-      continue;
-    }
-
-    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;
-    }
-
-    const int converted =
-        libyuv::ARGBToNV12(pixels, stride, nv12_frame_, even_width,
-                           nv12_frame_ + even_width * even_height, even_width,
-                           even_width, even_height);
 
     cached_generation = duplication_generation_;
-    d3d_context_->Unmap(staging_.Get(), 0);
     duplication_->ReleaseFrame();
     capture_lock.unlock();
 
-    if (converted == 0 && frame_monitor == monitor_index_.load() && callback_) {
+    if (converted && frame_monitor == monitor_index_.load() && callback_) {
       int idx = frame_monitor;
       if (idx >= 0 && idx < static_cast<int>(display_info_list_.size())) {
         const std::string stream_id = MakeDisplayStreamId(idx);
-        callback_(nv12_frame_, nv12_size, even_width, even_height,
+        CapturedCursorFrameScope cursor_scope(cursor_embedded);
-                  stream_id.c_str(), nullptr);
+        callback_(nv12_frame_, nv12_width_ * nv12_height_ * 3 / 2, nv12_width_,
+                  nv12_height_, stream_id.c_str(), nullptr);
+        cached_cursor_embedded = cursor_embedded;
         cached_monitor = idx;
         cached_frame_valid = true;
       } else {

apps/desktop/src/platform/windows/screen_capturer/screen_capturer_dxgi.h

@@ -25,6 +25,8 @@
 
 namespace crossdesk {
 
+class CursorFrameCompositor;
+
 class ScreenCapturerDxgi : public ScreenCapturer {
  public:
   ScreenCapturerDxgi();
@@ -35,6 +37,9 @@ class ScreenCapturerDxgi : public ScreenCapturer {
   int Destroy() override;
   int Start(bool show_cursor) override;
   int Stop() override;
+  void SetCursorCapture(bool enabled) {
+    show_cursor_.store(enabled, std::memory_order_relaxed);
+  }
 
   int Pause(int monitor_index) override;
   int Resume(int monitor_index) override;
@@ -52,6 +57,8 @@ class ScreenCapturerDxgi : public ScreenCapturer {
   bool CreateDuplicationForMonitor(int monitor_index);
   bool RecreateDuplicationForCurrentMonitor();
   void CaptureLoop();
+  bool ConvertFrame(int frame_monitor, bool* cursor_embedded,
+                    CursorFrameCompositor& compositor);
   void ReleaseDuplication();
 
  private:
@@ -79,6 +86,7 @@ class ScreenCapturerDxgi : public ScreenCapturer {
   unsigned char* nv12_frame_ = nullptr;
   int nv12_width_ = 0;
   int nv12_height_ = 0;
+  std::vector<uint8_t> rotated_frame_;
 };
 }  // namespace crossdesk
 

apps/desktop/src/platform/windows/screen_capturer/screen_capturer_win.cpp

@@ -902,6 +902,8 @@ void ScreenCapturerWin::ApplyCursorCaptureSetting() {
   int ret = 0;
   if (auto* gdi = dynamic_cast<ScreenCapturerGdi*>(impl_.get())) {
     gdi->SetCursorCapture(requested);
+  } else if (auto* dxgi = dynamic_cast<ScreenCapturerDxgi*>(impl_.get())) {
+    dxgi->SetCursorCapture(requested);
   } else if (auto* wgc = dynamic_cast<WgcPluginCapturer*>(impl_.get())) {
     ret = wgc->SetCursorCapture(requested);
   }

apps/desktop/xmake/targets.lua

@@ -230,7 +230,8 @@ function setup_targets()
                 "apps/desktop/src/platform/windows/screen_capturer/screen_capturer_gdi.cpp",
                 "apps/desktop/src/platform/windows/screen_capturer/screen_capturer_win.cpp",
                 "apps/desktop/src/platform/windows/screen_capturer/screen_capturer_factory.cpp")
-            add_includedirs("apps/desktop/src/platform/windows/screen_capturer",
+            add_includedirs("apps/desktop/src/platform/windows",
+                "apps/desktop/src/platform/windows/screen_capturer",
                 "apps/desktop/src/platform/windows/service")
         elseif is_os("macosx") then
             add_deps("privacy")