chrome/app/metro_driver_win.h

   1 // Copyright (c) 2011 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 CHROME_APP_METRO_DRIVER_WIN_H_
   6 #define CHROME_APP_METRO_DRIVER_WIN_H_
   7
   8 #include <Windows.h>
   9
  10 // Helper class to manage the metro driver dll. When present in the system,
  11 // the main process thread needs to call InitMetro(), normal execution of
  12 // chrome initialization will continue on a second thread while the main
  13 // thread will be servicing the metro message loop.
  14 class MetroDriver {
  15  public:
  16   typedef int (*MainFn)(HINSTANCE instance);
  17
  18   MetroDriver();
  19   // returns true if chrome is being launched in metro. If so we should
  20   // call RunInMetro(). If not then we should just run chrome as usual.
  21   bool in_metro_mode() const {  return (NULL != init_metro_fn_); }
  22
  23   // Enter the metro main function, which will only return when chrome metro
  24   // is closed. Once metro has initialized, the dll creates a new thread
  25   // which runs |main_fn|. This method returns when the chrome metro session
  26   // is closed by the user.
  27   int RunInMetro(HINSTANCE instance, MainFn main_fn);
  28
  29  private:
  30   void* init_metro_fn_;
  31 };
  32
  33 #endif  // CHROME_APP_METRO_DRIVER_WIN_H_