title: WPF application message loop and PostThreadMessage
body: <p>For a WPF application, is there internally a classic message loop (in Windows's <code>GetMessage/DispatchMessage</code> sense), inside <code>Application.Run</code>? Is it possible to catch a message posted from another Win32 application with <a href="http://msdn.microsoft.com/en-us/library/windows/desktop/ms644946%28v=vs.85%29.aspx" rel="nofollow">PostThreadMessage</a> to a WPF UI thread (a message without HWND handle). Thank you.</p>