private static IntPtr _WndProc(IntPtr hwnd, WM msg, IntPtr wParam, IntPtr lParam)
{
IntPtr result = IntPtr.Zero;
MessageWindow messageWindow = null;
if (msg == WM.CREATE)
{
CREATESTRUCT createstruct = (CREATESTRUCT)Marshal.PtrToStructure(lParam, typeof(CREATESTRUCT));
messageWindow = (MessageWindow)GCHandle.FromIntPtr(createstruct.lpCreateParams).Target;
MessageWindow.s_windowLookup.Add(hwnd, messageWindow);
}
else if (!MessageWindow.s_windowLookup.TryGetValue(hwnd, out messageWindow))
{
return(NativeMethods.DefWindowProc(hwnd, msg, wParam, lParam));
}
WndProc wndProcCallback = messageWindow._wndProcCallback;
if (wndProcCallback != null)
{
result = wndProcCallback(hwnd, msg, wParam, lParam);
}
else
{
result = NativeMethods.DefWindowProc(hwnd, msg, wParam, lParam);
}
if (msg == WM.NCDESTROY)
{
messageWindow._Dispose(true, true);
GC.SuppressFinalize(messageWindow);
}
return(result);
}
private static IntPtr _WndProc(IntPtr hwnd, WM msg, IntPtr wParam, IntPtr lParam)
{
IntPtr zero = IntPtr.Zero;
MessageWindow target = null;
if (msg == WM.CREATE)
{
CREATESTRUCT structure = (CREATESTRUCT)Marshal.PtrToStructure(lParam, typeof(CREATESTRUCT));
target = (MessageWindow)GCHandle.FromIntPtr(structure.lpCreateParams).Target;
MessageWindow.s_windowLookup.Add(hwnd, target);
}
else if (!MessageWindow.s_windowLookup.TryGetValue(hwnd, out target))
{
return(Standard.NativeMethods.DefWindowProcW(hwnd, msg, wParam, lParam));
}
WndProc wndProc = target._wndProcCallback;
zero = (wndProc == null ? Standard.NativeMethods.DefWindowProcW(hwnd, msg, wParam, lParam) : wndProc(hwnd, msg, wParam, lParam));
if (msg == WM.NCDESTROY)
{
target._Dispose(true, true);
GC.SuppressFinalize(target);
}
return(zero);
}
