public static extern int SendMessage(IntPtr hWnd, int msg, int wParam, ref APIsStructs.POINTAPI lParam);
public static extern bool UpdateLayeredWindow(IntPtr hwnd, IntPtr hdcDst, ref APIsStructs.POINTAPI pptDst, ref APIsStructs.SIZE psize, IntPtr hdcSrc, ref APIsStructs.POINTAPI pprSrc, Int32 crKey, ref APIsStructs.BLENDFUNCTION pblend, APIsEnums.UpdateLayeredWindowFlags dwFlags);
public static extern bool ClientToScreen(IntPtr hWnd, ref APIsStructs.POINTAPI pt);
static public extern bool ScreenToClient(IntPtr hWnd, ref APIsStructs.POINTAPI point);