[windows]add support for onWindowTaskbarCreated onWindowDeviceShutdown onWindo…

packages/window_manager/lib/src/window_listener.dart

@@ -42,6 +42,21 @@ abstract mixin class WindowListener {
   /// Emitted when the window leaves a full-screen state.
   void onWindowLeaveFullScreen() {}
 
+  /// Emitted when the taskbar created.
+  ///
+  /// @platforms windows
+  void onWindowTaskbarCreated() {}
+
+  /// Emitted when the device is going to shutdown.
+  ///
+  /// @platforms windows
+  void onWindowDeviceShutdown() {}
+
+  /// Emitted when the user is logoff.
+  ///
+  /// @platforms windows
+  void onWindowUserSessionDisconnect() {}
+
   /// Emitted when the window entered a docked state.
   ///
   /// @platforms windows

packages/window_manager/lib/src/window_manager.dart

@@ -25,7 +25,9 @@ const kWindowEventMove = 'move';
 const kWindowEventMoved = 'moved';
 const kWindowEventEnterFullScreen = 'enter-full-screen';
 const kWindowEventLeaveFullScreen = 'leave-full-screen';
-
+const kWindowEventTaskbarCreated = 'taskbar-created';
+const kWindowEventDeviceShutdown = 'device-shutdown';
+const kWindowEventUserSessionDisconnect = 'user-session-disconnect';
 const kWindowEventDocked = 'docked';
 const kWindowEventUndocked = 'undocked';
 
@@ -69,6 +71,10 @@ class WindowManager {
         kWindowEventMoved: listener.onWindowMoved,
         kWindowEventEnterFullScreen: listener.onWindowEnterFullScreen,
         kWindowEventLeaveFullScreen: listener.onWindowLeaveFullScreen,
+        kWindowEventTaskbarCreated: listener.onWindowTaskbarCreated,
+        kWindowEventDeviceShutdown: listener.onWindowDeviceShutdown,
+        kWindowEventUserSessionDisconnect:
+            listener.onWindowUserSessionDisconnect,
         kWindowEventDocked: listener.onWindowDocked,
         kWindowEventUndocked: listener.onWindowUndocked,
       };

packages/window_manager/windows/window_manager_plugin.cpp

@@ -2,6 +2,8 @@
 
 // This must be included before many other Windows headers.
 #include <windows.h>
+#include <WtsApi32.h>
+#pragma comment(lib,"WtsApi32.lib")
 
 #include <flutter/method_channel.h>
 #include <flutter/plugin_registrar_windows.h>
@@ -50,6 +52,10 @@ class WindowManagerPlugin : public flutter::Plugin {
 
   // The ID of the WindowProc delegate registration.
   int window_proc_id = -1;
+  // session
+  bool session_notification_registered = false;
+  // taskbar create
+  UINT WM_TASKBARCREATED = 0;
 
   void WindowManagerPlugin::_EmitEvent(std::string eventName);
   // Called for top-level WindowProc delegation.
@@ -117,6 +123,7 @@ WindowManagerPlugin::WindowManagerPlugin(
       [this](HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
         return HandleWindowProc(hWnd, message, wParam, lParam);
       });
+  WM_TASKBARCREATED = RegisterWindowMessageA("TaskbarCreated");
 }
 
 WindowManagerPlugin::~WindowManagerPlugin() {
@@ -139,7 +146,11 @@ std::optional<LRESULT> WindowManagerPlugin::HandleWindowProc(HWND hWnd,
                                                              WPARAM wParam,
                                                              LPARAM lParam) {
   std::optional<LRESULT> result = std::nullopt;
-
+  if(!session_notification_registered){
+    session_notification_registered = true;
+    WTSRegisterSessionNotification(hWnd, NOTIFY_FOR_THIS_SESSION);
+  }
+
   if (message == WM_DPICHANGED) {
     window_manager->pixel_ratio_ =
         (float)LOWORD(wParam) / USER_DEFAULT_SCREEN_DPI;
@@ -336,6 +347,14 @@ std::optional<LRESULT> WindowManagerPlugin::HandleWindowProc(HWND hWnd,
            flutter::EncodableValue(true)}};
       window_manager->SetAlwaysOnBottom(args);
     }
+  } else if(WM_TASKBARCREATED == message){
+     _EmitEvent("taskbar-created");
+  } else if (WM_QUERYENDSESSION == message){
+     _EmitEvent("device-shutdown");
+  } else if(WM_WTSSESSION_CHANGE == message){
+      if(WTS_CONSOLE_DISCONNECT == wParam) {
+        _EmitEvent("user-session-disconnect");
+      }
   }
 
   return result;