[Image-SIG] Creating a Transparent Image and Placing it Over Another Image (txt version)

[Wayne Watson]

I have a 640x480 by 8-bit image produced by the hardware that interfaces 
with a program. I would like to create a transparent image with a circle 
on it and a crosshair at the center of the circle, then place it on top 
of the first (real) image (produced by the h/w). I have no trouble 
drawing on the real image, but I'd like use this transparency idea here. 
The reason is that eventually I'd like the user to drag around the 
circle over the real image, and place it where they think the center of 
the real image is. Yes, it's important not only to have the cross hair, 
but the circle too.


-- 

           Wayne Watson (Watson Adventures, Prop., Nevada City, CA)

             (121.01 Deg. W, 39.26 Deg. N) GMT-8 hr std. time)****


          "Less than all cannot satisfy Man." -- William Blake