J# invalid paramater at runtime
 

Hi, I have this issue with a J# project I need to complete for uni.

public class Sprite

{

        private Image m_image;



        public Sprite(Image image)

        {

                m_image = image;

        }



        public int getWidth()

        {

                return m_image.get_Width();

        }



        public int getHeight()

        {

                return m_image.get_Height();

        }



        public void draw(Graphics g, int x, int y)

        {

                g.DrawImage(this.m_image, x, y);

        }

}

This compiles fine, however when I run the program the Image member variable m_image ends up with a Bitmap type rather than an Image.

Here's is the code where the bitmap is loaded, at no point do I cast, or use the bitmap type, so I'm left unsure how to fix it...

public Sprite getSprite(String ref)

        {

                /* check for cached sprite */



                if (imageCache.get(ref) != null)

                {

                        return (Sprite)imageCache.get(ref);

                }



                /* not found, load in bitmap now */



                Image inputFile = null;



                try

                {

                        inputFile = Image.FromFile(ref + ".bmp");

                }

                catch (Exception e)

                {

                        System.err.println("Load failed: " + ref + ".bmp");

                        System.exit(0);



                }



                // create a sprite, add it the cache then return it



                Sprite sprite = new Sprite(inputFile);

                imageCache.put(ref, sprite);



                return sprite;

        }

This cause an exception of "invalid paramater".

edit: I'm using the windows classes System.Drawing.* which is why I haven't posted this on the Java forum.

Re: J# invalid paramater at runtime
 

No one has any idea?

start of rant:
MSDN Forums are dead, no one is using J#, my lecturer is useless.. why force us to use this language with such limited support docs, examples, etc...