Hi Aldo I wonder if you could help me with a problem I'm having using radio buttons. There seems to be a problem when using multiple groups of radio buttons. When I click on a radio button it turns "on" okay but if any other group of radio buttons exists on the form, it also affects the other group by turning 'off' any activated button on that other group. It seems all radio buttons on a form belong to the same group. I believe in VB, radio button groups are 'contained' within frames which don't seem to be available in win32 GUI although your example using style GROUPBOX works very well except for the multiple group problem. Is this a bug or am I missing something ? Thanks very much Barry