# BitmapData w/ Transparency

**URL:** <https://forum.kirupa.com/t/bitmapdata-w-transparency/241716>\
**Category:** Uncategorized\
**Created:** [October 17, 2007, 12:26pm UTC](https://forum.kirupa.com/t/bitmapdata-w-transparency/241716 "2007-10-17T12:26:50Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![dewey](https://avatars.discourse-cdn.com/v4/letter/d/919ad9/32.png) [@dewey](https://forum.kirupa.com/u/dewey)\
**Post date:** [October 17, 2007, 12:26pm UTC](https://forum.kirupa.com/t/bitmapdata-w-transparency/241716/1 "2007-10-17T12:26:50Z")

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Hey Everyone,

Just working with the BitmapData class here and I was curious if it is possible for me to modify a pixel’s alpha value? With stuff like .getPixel() it seems like it would work, but I can’t seem to figure it out (though I am still new to AS3 and totally new to the BitmapData class)

Thanks a lot!

EDIT:

In fact, what I think I need to understand is the getPixel32 and getPixel properties better… the numbers are huge, but if I can modify the alpha channel to x then I can do whatever I want with a setPixel32…