public static extern ushort RegisterClass([In] ref WNDCLASS lpWndClass);
/// <summary>
/// Runs the standard message loop. The message loop quits when it receives the WM_QUIT message.
/// </summary>
public static void Run()
{
var wc = new WNDCLASS();
IntPtr hInstance = Process.GetCurrentProcess().Handle;
_currentDispatcher._hInstance = hInstance;
wc.lpfnWndProc = WindowProc;
wc.hInstance = hInstance;
wc.lpszClassName = string.Format(DISPATCHER_CLASS_NAME_TEMPLATE, _currentDispatcher._threadId);
_currentDispatcher._atom = NativeMethods.RegisterClass(ref wc);
if (_currentDispatcher._atom == 0)
{
throw new Win32Exception("Failed to register window");
}
_currentDispatcher._messageDispatcherWindow = NativeMethods.CreateWindowEx(
0,
new IntPtr((int)_currentDispatcher._atom),// fixes "Cannot find window class." when uses string
string.Format(DISPATCHER_NAME_TEMPLATE, _currentDispatcher._threadId),
WindowStyles.WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
IntPtr.Zero,
IntPtr.Zero,
hInstance,
IntPtr.Zero);
if (_currentDispatcher._messageDispatcherWindow == IntPtr.Zero)
{
int lastError = Marshal.GetLastWin32Error();
throw new Win32Exception(lastError);
}
MSG msg;
while (NativeMethods.GetMessage(out msg, IntPtr.Zero, 0, 0))
{
// if wm_quit received, object gets revoked from rot as using block exits.
// Thread (even process) can also exit.
NativeMethods.TranslateMessage(ref msg);
NativeMethods.DispatchMessage(ref msg);
}
}