Image Boxes

I have an image box and I want it to display a portion of an image. When the user clicks a command button I want to change the portion of the image that is in the image box. I want to be able to do this without loading the entire image into memory because the image is huge. Is there any way I can do this.

I'm a newbie, so this is probably wrong, but have you tried BitBlt?

I've made a short tutorial, as have MMan, and Fox.

http://vbden.tripod.com/articles/invmask.htm

to what sort of accuracy are you looking for optic...?

like within a few pixles, like is it a sort of user selectable view window, or just to display a portion of an image because your too lazy to crop the image yourself;)

??
later
owen.