private static extern bool ScreenToClient(IntPtr hWnd, ref Win32Types.Rect lpRect);
 public static bool ScreenToClientWrapper(IntPtr hWnd, ref Win32Types.Rect lpRect)
 {
     return(ScreenToClient(hWnd, ref lpRect));
 }
 private static extern bool GetClientRect(IntPtr hWnd, out Win32Types.Rect lpRect);
 public static bool GetClientRectWrapper(IntPtr hWnd, out Win32Types.Rect lpRect)
 {
     return(GetClientRect(hWnd, out lpRect));
 }