public static extern int DwmExtendFrameIntoClientArea(IntPtr hwnd, ref MARGINS margins);
public static extern int DwmExtendFrameIntoClientArea(IntPtr hwnd, ref MARGINS margins);
public static extern int DwmExtendFrameIntoClientArea(IntPtr hwnd, ref MARGINS margins);
public static extern int DwmExtendFrameIntoClientArea(IntPtr hwnd, ref MARGINS margins);