How to add a custom button to a column header in a grid

Question Comments

In both 13.1 and 14.1, this sample shows an empty button, and setting the image or caption doesn't appear to fix that. How do you get it to display an image or caption in the custom button?

Hello Thomas,
I've created a separate How to show a caption and an image within a custom painted button ticket for discussing this question. You will find an answer there.