You should ever make all your columns to be not movable and not resizable, or perform some calculations about size and position...

>Thanks for that Sergey.
>
>It worked. However, since I wanted to add tooltiptext only to headers, I found a much easier and straight forward trick to do that. I have just created a few command buttons which look exactly like the headers and placed them over the grid headers with the right tooltiptext and caption.
>
>It was fun to cheat the system!
>
>Thanks again
>
>Jonathan