Drawing with out erasing

"SUKU" <ksuku@mailcity.com> wrote:
>
>Hi,
>I want to draw a rectangle over an existing drawing. That rectangle can
be
>resized using mouse. While drawing the new rect, previous one has to be
erased.
>Doing so erases the existing drawing on which i had drawn the rect. How
to
>do that with out erasing? (I am not doing this in OnDraw as it makes whole
>drawing redrawn). Does anyone know how to do that without erasing the existing
>one?
>
>Thankx,
>SUKU

Hi
Before painting use the GDI-function SetROP2
Regards, Yuri