The way that I usually ensure all my images share the same palette is to use
a tool like Paint Shop Pro (or similar) and do the following:
1) combine all the images into one new big temporary bitmap.
2) Reduce the color depth of the new image to 256 colours using whatever
algorithm gives the best results - make sure you include the standard 16
windows pallete colours into the new 256 colours.
3) save the palette to file.
4) load the new palette into each of the original images (usually dithered).
I think that Windows loads as much as possible of the pallete of the first
BMP asked to be loaded and then for other BMPs just matches to the closest
colour.
Hope that helps,
Phil.
----- Original Message -----
From: "Mason, John" <[EMAIL PROTECTED]>
To: "Multiple recipients of list offtopic" <[EMAIL PROTECTED]>
Sent: Monday, October 02, 2000 2:40 PM
Subject: [DUG-OFFTOPIC]: 256 colour bitmaps for button glyphs
> I want to use 256 colour bitmaps for buttons, but I'm having trouble
> with the palettes. I'm using a mix of images I've designed myself, and
> others I've acquired, and I can't avoid some images being corrupted (I
> assume because the bitmaps don't all have the same palette). I've
> managed to sort this out when Windows is in 16-bit mode, but can't fix
> it when Windows is in 256-colour mode. Is there a way of ensuring a
> consistent palette for all the bitmaps, or should I avoid 256 colour
> buttons in 256 colour mode?
>
>
>
> John Mason
> Sinclair Knight Merz Limited
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