borderless transparent form?

Hi there

I would like to display a non-square image on a borderless and
transparent form. I think the way to do it is to capture the image of
the area  where the form will be painted when displayed and use that
as the form's backgound image. The non-square image can then be
painted over it.

Anybody that knows how to capture this image or that has another

Thanks in advace

Theo van Niekerk