Support DWM switching....

chrome/views/widget_win.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_VIEWS_WIDGET_WIN_H_
 #define CHROME_VIEWS_WIDGET_WIN_H_
 
 #include <atlbase.h>
 #include <atlcrack.h>
 
@@ skipping 158 matching lines @@
     MESSAGE_RANGE_HANDLER_EX(WM_NCMOUSEMOVE, WM_NCMOUSEMOVE, OnMouseRange)
     MESSAGE_RANGE_HANDLER_EX(WM_SETTINGCHANGE, WM_SETTINGCHANGE, OnSettingChange)
 
     // Reflected message handler
     MESSAGE_HANDLER_EX(kReflectedMessage, OnReflectedMessage)
 
     // CustomFrameWindow hacks
     MESSAGE_HANDLER_EX(WM_NCUAHDRAWCAPTION, OnNCUAHDrawCaption)
     MESSAGE_HANDLER_EX(WM_NCUAHDRAWFRAME, OnNCUAHDrawFrame)
 
+    // Vista and newer
+    MESSAGE_HANDLER_EX(WM_DWMCOMPOSITIONCHANGED, OnDwmCompositionChanged)
+
     // Non-atlcrack.h handlers
     MESSAGE_HANDLER_EX(WM_GETOBJECT, OnGetObject)
     MESSAGE_HANDLER_EX(WM_NCMOUSELEAVE, OnNCMouseLeave)
     MESSAGE_HANDLER_EX(WM_MOUSELEAVE, OnMouseLeave)
 
     // This list is in _ALPHABETICAL_ order! OR I WILL HURT YOU.
     MSG_WM_ACTIVATE(OnActivate)
+    MSG_WM_ACTIVATEAPP(OnActivateApp)
     MSG_WM_APPCOMMAND(OnAppCommand)
     MSG_WM_CANCELMODE(OnCancelMode)
     MSG_WM_CAPTURECHANGED(OnCaptureChanged)
     MSG_WM_CLOSE(OnClose)
     MSG_WM_COMMAND(OnCommand)
     MSG_WM_CREATE(OnCreate)
     MSG_WM_DESTROY(OnDestroy)
     MSG_WM_ERASEBKGND(OnEraseBkgnd)
     MSG_WM_ENDSESSION(OnEndSession)
     MSG_WM_ENTERSIZEMOVE(OnEnterSizeMove)
@@ skipping 144 matching lines @@
 
   // Message Handlers
   // These are all virtual so that specialized Widgets can modify or augment
   // processing.
   // This list is in _ALPHABETICAL_ order!
   // Note: in the base class these functions must do nothing but convert point
   //       coordinates to client coordinates (if necessary) and forward the
   //       handling to the appropriate Process* function. This is so that
   //       subclasses can easily override these methods to do different things
   //       and have a convenient function to call to get the default behavior.
-  virtual void OnActivate(UINT action, BOOL minimized, HWND window) { }
+  virtual void OnActivate(UINT action, BOOL minimized, HWND window) {
+    SetMsgHandled(FALSE);
+  }
+  virtual void OnActivateApp(BOOL active, DWORD thread_id) {
+    SetMsgHandled(FALSE);
+  }
   virtual LRESULT OnAppCommand(HWND window, short app_command, WORD device,
                                int keystate) {
     SetMsgHandled(FALSE);
     return 0;
   }
   virtual void OnCancelMode() {}
   virtual void OnCaptureChanged(HWND hwnd);
   virtual void OnClose();
   virtual void OnCommand(
     UINT notification_code, int command_id, HWND window) { SetMsgHandled(FALSE); }
   virtual LRESULT OnCreate(LPCREATESTRUCT create_struct) { return 0; }
   // WARNING: If you override this be sure and invoke super, otherwise we'll
   // leak a few things.
   virtual void OnDestroy();
+  virtual LRESULT OnDwmCompositionChanged(UINT msg,
+                                          WPARAM w_param,
+                                          LPARAM l_param) {
+    SetMsgHandled(FALSE);
+    return 0;
+  }
   virtual void OnEndSession(BOOL ending, UINT logoff) { SetMsgHandled(FALSE); }
   virtual void OnEnterSizeMove() { SetMsgHandled(FALSE); }
   virtual void OnExitMenuLoop(BOOL is_track_popup_menu) { SetMsgHandled(FALSE); }
   virtual LRESULT OnEraseBkgnd(HDC dc);
   virtual LRESULT OnGetObject(UINT uMsg, WPARAM w_param, LPARAM l_param);
   virtual void OnHScroll(int scroll_type, short position, HWND scrollbar) {
     SetMsgHandled(FALSE);
   }
   virtual void OnInitMenu(HMENU menu) { SetMsgHandled(FALSE); }
   virtual void OnInitMenuPopup(HMENU menu, UINT position, BOOL is_system_menu) {
     SetMsgHandled(FALSE);
   }
   virtual void OnKeyDown(TCHAR c, UINT rep_cnt, UINT flags);
   virtual void OnKeyUp(TCHAR c, UINT rep_cnt, UINT flags);
   virtual void OnLButtonDblClk(UINT flags, const CPoint& point);
   virtual void OnLButtonDown(UINT flags, const CPoint& point);
   virtual void OnLButtonUp(UINT flags, const CPoint& point);
   virtual void OnMButtonDblClk(UINT flags, const CPoint& point);
   virtual void OnMButtonDown(UINT flags, const CPoint& point);
   virtual void OnMButtonUp(UINT flags, const CPoint& point);
   virtual LRESULT OnMouseActivate(HWND window, UINT hittest_code, UINT message);
   virtual void OnMouseMove(UINT flags, const CPoint& point);
-  virtual LRESULT OnMouseLeave(UINT uMsg, WPARAM w_param, LPARAM l_param);
+  virtual LRESULT OnMouseLeave(UINT message, WPARAM w_param, LPARAM l_param);
   virtual void OnMove(const CPoint& point) { SetMsgHandled(FALSE); }
   virtual void OnMoving(UINT param, const LPRECT new_bounds) { }
   virtual LRESULT OnMouseWheel(UINT flags, short distance, const CPoint& point);
   virtual LRESULT OnMouseRange(UINT msg, WPARAM w_param, LPARAM l_param);
   virtual LRESULT OnNCActivate(BOOL active) { SetMsgHandled(FALSE); return 0; }
   virtual LRESULT OnNCCalcSize(BOOL w_param, LPARAM l_param) { SetMsgHandled(FALSE); return 0; }
   virtual LRESULT OnNCHitTest(const CPoint& pt) { SetMsgHandled(FALSE); return 0; }
   virtual void OnNCLButtonDblClk(UINT flags, const CPoint& point);
   virtual void OnNCLButtonDown(UINT flags, const CPoint& point);
   virtual void OnNCLButtonUp(UINT flags, const CPoint& point);
@@ skipping 204 matching lines @@
   CComPtr<IAccessible> accessibility_root_;
 
   // Our hwnd.
   HWND hwnd_;
 };
 
 }  // namespace views
 
 #endif  // #ifndef CHROME_VIEWS_WIDGET_WIN_H_