>Hi Gotzon
>
>Thanks for your answer.
>
>>You have to use the LostFocus metod in each option in the optiongroup.
>
>>I create one class OptionButton and add this object to the option group with >the metod LostFocus I need.
>
>After this, how do you know if the optiongroup or textbox has lost the focus
>by mouse or by keyboard ?

Test mdown() in lostfocus.