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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#ifndef widget_windows_WinEventObserver_h
#define widget_windows_WinEventObserver_h
#include <windef.h>
namespace mozilla::widget {
class WinEventWindow {
public:
// Create the hidden window. This window will persist for the lifetime of the
// process: we do not destroy it, but neither does it keep the process alive.
//
// Must be called in the parent process and on the main thread. Crashes on
// failure.
static void Ensure();
// (Do not call in real code.)
static HWND GetHwndForTestingOnly();
private:
// the hidden window's WNDPROC
static LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
};
} // namespace mozilla::widget
#endif // widget_windows_WinEventObserver_h