Transparency confusion

[Ken Norris]

Hi again,

> Date: Sun, 28 Dec 2003 12:14:22 -0700
> From: Dar Scott <dsc at swcp.com>
> Subject: Re: Transparency confusion

> I think one can make an image the right type by setting the maskData
> property.  A plugin might set a key color and a tolerance (RGB
> distance) value.  It can then set the maskData based on that.
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Hmmm. I guess I did a doubletake here. Can I do that by creating an 8-bit
black image by hand in picture editor of the space I want opaque, then
setting the maskData of the image I want using it?

If it will work, then how do I do it, i.e., define the maskData of my
finished image to the blackout area I create?

Ken N.