public static extern int DwmUpdateThumbnailProperties(IntPtr HThumbnail, ref DWMThumbnailProperties props);
public static extern int DwmUpdateThumbnailProperties(IntPtr HThumbnail, ref DWMThumbnailProperties props);
public static extern int DwmUpdateThumbnailProperties(IntPtr HThumbnail, ref DWMThumbnailProperties props);
public static extern int DwmUpdateThumbnailProperties(IntPtr HThumbnail, ref DWMThumbnailProperties props);