Dynamically calculating the image for windowShape

[Dar Scott]

On Thursday, September 11, 2003, at 03:41 PM, Tuviah Snyder wrote:

>> It is set by image ID.  Will it follow that image?  Can I control this
>> by setting the alphaData on that image?
> set the maskData of the image.

Thanks!  Long ago I had gotten the false impression that maskData is 
bit packed (8 pixels per byte) and I have ignored it.  This is as easy 
to use as alphaData.

Dar Scott