I wanted to make a button who's image was set to an object's image, including all the object's overlays. How do I set the image's icon to that? Or is it not possible?
You'd have to use an icon Blend() to combine all of the icons into one. (ICON_OVERLAY or ICON_UNDERLAY.)
If you want to include overlays you'd have to have a way to loop through the overlays to take out each one for that operation, I believe.