Interface IImageObserver
.NET interface skeleton to be manually developed following https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/java/awt/image/ImageObserver.html
public interface IImageObserver
Methods
ImageUpdate(Image, int, int, int, int, int)
bool ImageUpdate(Image arg0, int arg1, int arg2, int arg3, int arg4, int arg5)