Reduce color of a bitmap

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From: Betschart Linus (linus[no-spam)
Date: 05/12/04 

Date: Wed, 12 May 2004 11:46:14 +0200

Hello friends,

I have a problem, who not ;)

so I want to reduce the color depth of a bitmap.

I read here: http://www.dotnet247.com/247reference/msgs/29/147842.aspx that
it's just possible with GIF Files, but I am not quiet sure about this
statement, because, if i use this sample code:
http://support.microsoft.com/?id=319061 (but save as BMP and not as GIF), it
works!
My problem now is, that it saves just in grayscale, not in colour!
Can anyone help me?

thx a lot in advance
LB

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