Repaint windows on screen unlock.

ui/views/win/hwnd_message_handler.h

 // Copyright (c) 2012 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 UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_H_
 #define UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_H_
 
 #include <windows.h>
 #include <atlbase.h>
 #include <atlapp.h>
@@ skipping 268 matching lines @@
   // Stops ignoring SetWindowPos() requests (see below).
   void StopIgnoringPosChanges() { ignore_window_pos_changes_ = false; }
 
   // Synchronously paints the invalid contents of the Widget.
   void RedrawInvalidRect();
 
   // Synchronously updates the invalid contents of the Widget. Valid for
   // layered windows only.
   void RedrawLayeredWindowContents();
 
+  // Attempts to force the window to be redrawn, ensuring that it gets
+  // onscreen.
+  void ForceRedrawWindow(int attempts);
+
   // Message Handlers ----------------------------------------------------------
 
   BEGIN_SAFE_MSG_MAP_EX(HWNDMessageHandler)
     // Range handlers must go first!
     MESSAGE_RANGE_HANDLER_EX(WM_MOUSEFIRST, WM_MOUSELAST, OnMouseRange)
     MESSAGE_RANGE_HANDLER_EX(WM_NCMOUSEMOVE, WM_NCXBUTTONDBLCLK, OnMouseRange)
 
     // CustomFrameWindow hacks
     MESSAGE_HANDLER_EX(WM_NCUAHDRAWCAPTION, OnNCUAHDrawCaption)
     MESSAGE_HANDLER_EX(WM_NCUAHDRAWFRAME, OnNCUAHDrawFrame)
@@ skipping 68 matching lines @@
     MSG_WM_PAINT(OnPaint)
     MSG_WM_SETFOCUS(OnSetFocus)
     MSG_WM_SETICON(OnSetIcon)
     MSG_WM_SETTEXT(OnSetText)
     MSG_WM_SETTINGCHANGE(OnSettingChange)
     MSG_WM_SIZE(OnSize)
     MSG_WM_SYSCOMMAND(OnSysCommand)
     MSG_WM_THEMECHANGED(OnThemeChanged)
     MSG_WM_WINDOWPOSCHANGED(OnWindowPosChanged)
     MSG_WM_WINDOWPOSCHANGING(OnWindowPosChanging)
+    MSG_WM_WTSSESSION_CHANGE(OnSessionChange)
   END_MSG_MAP()
 
   // Message Handlers.
   // This list is in _ALPHABETICAL_ order!
   // TODO(beng): Once this object becomes the WindowImpl, these methods can
   //             be made private.
   void OnActivateApp(BOOL active, DWORD thread_id);
   // TODO(beng): return BOOL is temporary until this object becomes a
   //             WindowImpl.
   BOOL OnAppCommand(HWND window, short command, WORD device, int keystate);
@@ skipping 24 matching lines @@
   LRESULT OnNCActivate(UINT message, WPARAM w_param, LPARAM l_param);
   LRESULT OnNCCalcSize(BOOL mode, LPARAM l_param);
   LRESULT OnNCHitTest(const CPoint& point);
   void OnNCPaint(HRGN rgn);
   LRESULT OnNCUAHDrawCaption(UINT message, WPARAM w_param, LPARAM l_param);
   LRESULT OnNCUAHDrawFrame(UINT message, WPARAM w_param, LPARAM l_param);
   LRESULT OnNotify(int w_param, NMHDR* l_param);
   void OnPaint(HDC dc);
   LRESULT OnReflectedMessage(UINT message, WPARAM w_param, LPARAM l_param);
   LRESULT OnScrollMessage(UINT message, WPARAM w_param, LPARAM l_param);
+  void OnSessionChange(WPARAM status_code, PWTSSESSION_NOTIFICATION session_id);
   LRESULT OnSetCursor(UINT message, WPARAM w_param, LPARAM l_param);
   void OnSetFocus(HWND last_focused_window);
   LRESULT OnSetIcon(UINT size_type, HICON new_icon);
   LRESULT OnSetText(const wchar_t* text);
   void OnSettingChange(UINT flags, const wchar_t* section);
   void OnSize(UINT param, const CSize& size);
   void OnSysCommand(UINT notification_code, const CPoint& point);
   void OnThemeChanged();
   LRESULT OnTouchEvent(UINT message, WPARAM w_param, LPARAM l_param);
   void OnWindowPosChanging(WINDOWPOS* window_pos);
@@ skipping 121 matching lines @@
 };
 
 // This window property if set on the window does not activate the window for a
 // touch based WM_MOUSEACTIVATE message.
 const wchar_t kIgnoreTouchMouseActivateForWindow[] =
     L"Chrome.IgnoreMouseActivate";
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_H_