How to display alpha channel of layer mask in layers palette ??

Help me out here folks....
Using CS5--in the past, when I added a layer mask to a layer, it would display in the palette as the alpha channel, which was very handy. Now, when I add a layer mask, it only appears as the mask icon; i.e., gray square with white circle in the middle. I have no clue what I did to change from the one to the other, but I would certainly like to get the alpha representation back!
TIA,
Toby

Could you please post a screenshot with the pertinent Panels visible?
Could you be mixing up Layer Masks and Vector Masks?

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Moving a layer's alpha channel into layer mask

(CS3)
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kopo88 wrote:
(CS3)
I have a raster layer that has some semi-transparent pixels. I'd like to make the layer itself fully opaque, and move the contents of its alpha channel into a layer mask. How would I go about doing this? (If possible, merging the alpha channel with what I have already placed into the layer mask.)
Thanks!
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Hi all! I have a problem. Please help me. Thank you very much.
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delete[] overlay;
But there is a problem.The image of alpha Channels in proxy is not clear, because overlay[i].opacity = 50 * 2.55.
It looks like diffrent from displaying in photoshop.I do not know how to use pixels.mat and pixels.masks.
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When I choose the brush and start painting at 100% black or white, nothing happens and I can't figure out what is happening.
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The exact steps that I'm taking are below:
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CLARIFICATION:
I actually am able to "edit" the alpha channel HOWEVER I cannot remove the hazy artifact. I can use 100% black or white to remove the pink/light red areas on either the actual alpha channel (in the Channels area) or as it appears in Layers, but I cannot remove the areas that are grey-ish (well I can paint them white but I can't paint them black, i.e. fully pink).
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EDIT (07:22 3.20.13) Also, if you look at what Photoshop is registering as the actual alpha channle, it doesn't match with what I'm seeing above, that is the black and white alpha channel appears to be as expected, and there is not the weird distortion that I'm seeing above in the pink/grey image.
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I greatly appreciate your help with this.
However, after adjustting the black from 99 to 100%, and double checking that the white is fully zero (right now I can't find any files with the white set to anything but "0," so I don't know why some of my screenshots showed that), I am still unable to use black to contract a selection, or white to erase unwanted areas of the alpha channel (this specific post's problem).
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Thanks again,
dk
EDIT:
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How to display alpha channel of layer mask in layers palette ??

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