private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
switch (msg)
{
case 126:
if (IsVisible)
{
RenderLayeredWindow();
}
break;
case 33:
handled = true;
return(new IntPtr(3));
case 132:
Cursor = GetCursor(lParam) ?? Cursors.None;
break;
case 161:
case 163:
case 164:
case 166:
case 167:
case 169:
case 171:
case 173:
var targetWindowHandle = TargetWindowHandle;
NativeMethods.SendMessage(targetWindowHandle, 6, new IntPtr(2), IntPtr.Zero);
NativeMethods.SendMessage(targetWindowHandle, msg, wParam, IntPtr.Zero);
break;
case 6:
return(IntPtr.Zero);
case 70:
var windowPos = (Windowpos)Marshal.PtrToStructure(lParam, typeof(Windowpos));
windowPos.flags |= 16U;
Marshal.StructureToPtr(windowPos, lParam, true);
break;
case 513:
if (!IsHitTestVisible)
{
break;
}
var pt = new Point((int)lParam & 0xFFFF, ((int)lParam >> 16) & 0xFFFF);
NativeMethods.PostMessage(TargetWindowHandle,
161, (IntPtr)DecideResizeDirection(pt),
IntPtr.Zero);
break;
}
return(NativeMethods.DefWindowProc(hwnd, msg, wParam, lParam));
}
private static IntPtr WmNcActivate(IntPtr hWnd, IntPtr wParam, ref bool handled)
{
handled = true;
return(NativeMethods.DefWindowProc(hWnd, 134, wParam, new IntPtr(-1)));
}