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_ 34
