[feat] add lock screen on disconnect option, refs #125

apps/desktop/src/platform/windows/gui/application/unattended_application.cpp

@@ -45,6 +45,7 @@ int GuiApplication::RunUnattended(void* stop_event) {
       if (CreateConnectionPeer() != 0) CloseConnectionPeer();
     }
     HandleConnectionStatusChange();
+    HandleScreenLock();
     HandleWindowsServiceIntegration();
     devices_.UpdateInteractions();
     ShareLocalCursorState();
@@ -71,6 +72,7 @@ int GuiApplication::RunUnattended(void* stop_event) {
   devices_.DestroyDevices();
   devices_.DestroyFactories();
   privacy_.Shutdown();
+  HandleScreenLock();
   WriteUnattendedStatus(settings_.ActiveIdentity(), false, session);
   SDL_Quit();
   return 0;

apps/desktop/src/platform/windows/screen_lock.cpp

@@ -0,0 +1,21 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2026-10-25
+ * Copyright (c) 2026 by DI JUNKUN, All Rights Reserved.
+ */
+
+#include "screen_lock.h"
+
+#include <windows.h>
+
+#include "rd_log.h"
+
+namespace crossdesk {
+
+bool LockScreen() {
+  if (LockWorkStation()) return true;
+  LOG_WARN("LockWorkStation failed: {}", GetLastError());
+  return false;
+}
+
+}  // namespace crossdesk