How to set correct toolbar size under XP?

Hi,

I have a toolbar that has list style with several drop down buttons and other buttons, with text aligned on the right and no text. I set the toolbar button height to 16. I have no problem to run it under win98, 2k, but not XP and 2k3 with theme enabled.

The toolbar button on XP and 2k3 always got bigger than it is under win2k. If I use SetSizes after creating the toolbar, it is correct. But if I then add a new button, the button size return to large again, even large than the toolbar itself.

Anyone has this kind of problem under XP theme? Please advise.

Thanks