When I open myicon.tif in Preview, the icon is on top of a black
background. I thought it might be the alpha channel, but then
Preview should be able to deal with transparency... What is it that
goes wrong?
Just a guess: Have you tried doing an NSRectFill() with clearColor
(transparentColor? whatever...) before drawing? It might just be that
the image starts out opaque and when you draw it just composites on
that?
Otherwise, is there any reason why you can't use NSWorkspace's
iconForFile: ?
