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