content/browser/system_message_window_win.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_SYSTEM_MESSAGE_WINDOW_WIN_H_
   6 #define CONTENT_BROWSER_SYSTEM_MESSAGE_WINDOW_WIN_H_
   7
   8 #include <windows.h>
   9
  10 #include "base/basictypes.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "content/common/content_export.h"
  13
  14 namespace content {
  15
  16 class CONTENT_EXPORT SystemMessageWindowWin {
  17  public:
  18   SystemMessageWindowWin();
  19
  20   virtual ~SystemMessageWindowWin();
  21
  22   virtual LRESULT OnDeviceChange(UINT event_type, LPARAM data);
  23
  24  private:
  25   void Init();
  26
  27   LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
  28                            WPARAM wparam, LPARAM lparam);
  29
  30   static LRESULT CALLBACK WndProcThunk(HWND hwnd,
  31                                        UINT message,
  32                                        WPARAM wparam,
  33                                        LPARAM lparam) {
  34     SystemMessageWindowWin* msg_wnd = reinterpret_cast<SystemMessageWindowWin*>(
  35         GetWindowLongPtr(hwnd, GWLP_USERDATA));
  36     if (msg_wnd)
  37       return msg_wnd->WndProc(hwnd, message, wparam, lparam);
  38     return ::DefWindowProc(hwnd, message, wparam, lparam);
  39   }
  40
  41   HMODULE instance_;
  42   HWND window_;
  43   class DeviceNotifications;
  44   scoped_ptr<DeviceNotifications> device_notifications_;
  45
  46   DISALLOW_COPY_AND_ASSIGN(SystemMessageWindowWin);
  47 };
  48
  49 }  // namespace content
  50
  51 #endif  // CONTENT_BROWSER_SYSTEM_MESSAGE_WINDOW_WIN_H_