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Alpha transparency in ImageList

Is it possible to put RGBA bitmaps in an ImageList with the designer ?
I'm trying to put some PNG bitmaps with alpha in an ImageList with the
designer, but it seems to convert the bitmaps in BMP w/o Alpha in the resx
binary stream : when I reopen the ImageList image collection in the
designer, the bitmaps are no more from a "PNG source" but "memory bitmap",
and the alpha is gone (and the alpha pixels are dark blue). Any way to
prevent the designer from doing that conversion ?
Any other convenient tool to edit the ImageStream in the resx files ?
Thanks,
BZ
Nov 15 '05 #1
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