public static extern WindowStyles GetWindowLong(IntPtr hWnd, GetWindowLongValue nIndex);
public static extern WindowStyles GetWindowLong(IntPtr hWnd, GetWindowLongValue nIndex);
public static extern WindowStyles GetWindowLong(IntPtr hWnd, GetWindowLongValue nIndex);
public static extern WindowStyles GetWindowLong(IntPtr hWnd, GetWindowLongValue nIndex);