>>>Ok, found it. The checkbox has caption none... :) So, I coded "visual clue" by myself in GotFocus (backcolor = rgb(0,0,64) and in the lostfocus - restore it to default)
>>
>>The question is: is it possible to do without changing checkbox class and without changing each instance of the checkboxes?
>
>

*-- in pseudo code
>for each oControl in ThisFormsControlsRecursively
>   if oControl.baseclass="checkbox"
>      Bindevent(oControl, "gotfocus", this, "paintcheckboxblue")
>      Bindevent(oControl, "lostfocus", this, "paintcheckboxneutral")
>   endif
>endfor

Thanks, Dragan. I'm thinking, that may be fixing the base class would be a better alternative...