DBAdvGrid checkbox images

I’m using a DBAdvGrid that has four checkbox columns. I’d like to replace the default checkbox images with custom ones — a different image for each column. Is that possible?
My DBAdvGrid version is 2.5.1.17.

set grid.ControlLook.ControlStyle = csGlyph and then set the images for the check true & false state via
grid.ControlLook.CheckedGlyph /grid.ControlLook.UnCheckedGlyph

I believe this approach applies the same image to all checkbox columns. What I actually want is for each checkbox column to have its own distinct image.

Sadly, this exact capability is not built-in.
You'd need to handle this through custom drawing or adding custom images to grid cells depending on the column and checked state.