Reza,
What I was suggesting is that you derive your own label class from the VFP Label BaseClass and you can have your subclass set to Transparent. Then you use your label class, or another class derived from it, everywhere and you won't have to worry about the transparency again.
>Yes . i know that label must be transparent .
>But some times some object's backgrond is set to 192,192,192 and this color was changed
>in windows xp and is not same as form backgrond.