Hi all...
Solved! I'm still not sure of the why, but, in my case, the solution was simple: I ran 'qtconfig' and changed the 'theme' (in my case to 'platinum'). All works as advertised now. Don't ask me why. The reason I went there was: 1) I visited trolltech.com, and looked up the QDropDown widget. There I found that there were different styles according to the Motif 1/2, Windows, etc versions... The button I had was the Motif 1 version, so I was a little concerned about being outdated. I never found out how to determine which version I have... 2) I ran 'qtconfig' and found that the style of the buttons can easily be changed there. So I changed it, and, presto, it worked. I'd love to hear an explanation... John