On Wed, Apr 13, 2005 at 03:57:56PM +0100, David Marrs wrote: > cedric wrote: > > >I wonder why, when Opening or creating a document, there are only 3 > >color channel and then, when creatin a layer, the alpha is coming. What > >this stand for ? > > > >Cedric > > > > > The bottom layer cannot be transparent, as far as I'm aware, so it does > not have an alpha channel associated with it. You can still export > transparent gifs and pngs though.
Err, unless I am misunderstanding you, you are wrong. Bottom layers can
most definitely be transparent. As noted previously in response to this
question, when you create a new image, what you fill the base layer with
changes whether or not it has an alpha channel. At any point, you can add
an alpha channel by going to:
Layer -> Transparency -> Add Alpha Channel
At any point, you can remove an alpha channel by flattening the layer.
Jeff
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