electron/atom/browser/ui/win/message_handler_delegate.h
2015-08-06 10:15:27 +08:00

26 lines
908 B
C++

// Copyright (c) 2015 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#ifndef ATOM_BROWSER_UI_WIN_MESSAGE_HANDLER_DELEGATE_H_
#define ATOM_BROWSER_UI_WIN_MESSAGE_HANDLER_DELEGATE_H_
#include <windows.h>
namespace atom {
class MessageHandlerDelegate {
public:
// Catch-all message handling and filtering. Called before
// HWNDMessageHandler's built-in handling, which may pre-empt some
// expectations in Views/Aura if messages are consumed. Returns true if the
// message was consumed by the delegate and should not be processed further
// by the HWNDMessageHandler. In this case, |result| is returned. |result| is
// not modified otherwise.
virtual bool PreHandleMSG(
UINT message, WPARAM w_param, LPARAM l_param, LRESULT* result);
};
} // namespace atom
#endif // ATOM_BROWSER_UI_WIN_MESSAGE_HANDLER_DELEGATE_H_