MoveWindow doesn't do anything on DeSmuME's Window

Question

Im doing a basic test MoveWindow(handle, 0, 0, 1280, 720, true) on DeSmuME's process and it results in no changes at all, I at least expected its X/Y pos to change to 0 (top left of the screen), but nope, nothing at all, whats strange though is its getting the handle fine and RECT structure works on it too, it manages to get the positions fine.

[StructLayout(LayoutKind.Sequential)]
public struct RECT {
  public int left;
  public int top;
  public int right;
  public int bottom;
}
[DllImport("user32.dll", SetLastError = true)]
static extern bool GetWindowRect(IntPtr hWnd, ref RECT Rect);

[DllImport("user32.dll", SetLastError = true)]
static extern bool MoveWindow(IntPtr hWnd, int X, int Y, int Width, int Height, bool Repaint);
static void Main(string[] args) {
  Process[] processes = Process.GetProcessesByName("DeSmuME_X432R_x64");
  foreach (Process p in processes) {
    IntPtr handle = p.MainWindowHandle;
    RECT Rect = new RECT();
    if (GetWindowRect(handle, ref Rect)) {
      MoveWindow(handle, 0, 0, 1280, 720, true);
    }
    Console.WriteLine(Rect.right);
    Console.ReadLine();
  }
}