[screenweaver] How ScreenWeaver gets alpha

[campbell at andersons.net.nz]

Hi people,

Just a quick thanks for the great open source resource. I downloaded it to
find out how you were doing alpha of the flash OCX. I am making a c# app and
wanted to figure this one out as many people have tried and failed. I see
that you change the background to black then white and look for the
difference/offset. So this means you can only have 0% and 100% alpha. How
did you work out the varing degrees of alpha? I thought the black and white
thing was pretty smart. If I could code in c++ I would help but don't know
enough c++.

Cheers

Campbell
Xsive.co.nz