David,
>
>The .TopIndex property will change and the MouseUp() MouseDown() events fire.

Thanks for the reply. I tried to SetFocus to some form's control and then back to this in ListBox.MouseUp event. It partially helps, however, sometimes whole content of listbox disappears and listbox becames blank :( I'm afraid, there is nothing I can do with this listbox bug. How pity :(((( It seems to me, that I need to design another control, based on grid. This grid should behave similar to multi-select listbox. This is very tough problem, I'm afraid, but it seems to me, that I must create this control because of VFP multi-listbox bug...

BTW, if my control consists of several controls, how can I add properties/methods to the inner control? For example, this control I was working, consists of container _-> listbox, commandbutton, checkbox. I wanted to add listbox TopIndex_assign, but can not do it in Class menu. Is there a way to do this?

Thanks in advance