Stack Transparency Background only?

[Scott Rossi]

Recently, Sannyasin Sivakatirswami wrote:

> When setting  blend mode (transparency) of a stack, such that the
> background shows thru all objects are also transparent. Is there a way
> to make it so the background only is transparent?

The only way to do this currently is to use the windowshape property, which
is basically using an image to define the transparent and opaque regions of
the stack.  In doing this you loose the ability to have a resizable stack,
but you will get the effect you're looking for.

Regards,

Scott Rossi
Creative Director
Tactile Media, Multimedia & Design