chrome_frame/event_hooker.h

   1 // Copyright (c) 2010 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 #include <windows.h>
   6
   7 #ifndef CHROME_FRAME_EVENT_HOOKER_H_
   8 #define CHROME_FRAME_EVENT_HOOKER_H_
   9
  10 class EventHooker {
  11  public:
  12   EventHooker();
  13   ~EventHooker();
  14
  15   // Call this to install event hooks that will trigger on window creation
  16   // and reparenting. Returns true if the hooks are successfully installed,
  17   // false otherwise.
  18   bool StartHook();
  19
  20   // Call this to remove the event hooks that are installed by StartHook().
  21   void StopHook();
  22
  23   // The callback invoked in response to an event registered for in StartHook().
  24   static VOID CALLBACK WindowCreationHookProc(HWINEVENTHOOK hook,
  25                                               DWORD event,
  26                                               HWND window,
  27                                               LONG object_id,
  28                                               LONG child_id,
  29                                               DWORD event_tid,
  30                                               DWORD event_time);
  31
  32  private:
  33   HWINEVENTHOOK window_creation_hook_;
  34 };
  35
  36 #endif  // CHROME_FRAME_EVENT_HOOKER_H_