Hey again,

OK, this is where I got so far:

public static Bitmap GrabViewport()
        {
            IViewExp activeViewport = global.COREInterface.ActiveViewport;
            IGraphicsWindow gw = activeViewport.Gw;
            return gw.DIB;
        }

But when I call this function through maxscript (that's my easiest way to test it for now) I get the following error:

-- Runtime error: dotNet runtime exception: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

Any idea what I'm doing wrong?

Thanks,

o

Never mind, I think I got it. This seems to work:

public static Bitmap GrabViewport()
        {
            IViewExp activeViewport = global.COREInterface.ActiveViewport;
            IGraphicsWindow gw = activeViewport.Gw;
            Bitmap bm = gw.DIB;
            return bm;
        }

But I don't understand why I have to cast gw.DIB into a new variable. Why can't I directly return gw.DIB?

Thanks,

o