public static extern int DwmQueryThumbnailSourceSize(Thumbnail hThumbnail, out DwmSize pSize);
public static extern int DwmQueryThumbnailSourceSize(Thumbnail hThumbnail, out DwmSize pSize);
public static extern int DwmQueryThumbnailSourceSize(Thumbnail hThumbnail, out DwmSize pSize);
public static extern int DwmQueryThumbnailSourceSize(Thumbnail hThumbnail, out DwmSize pSize);