There is a problem with 256 colour display mode in Windows, because it
relies on the 256 colours that are programmed in the video hardware. If the
colour cannot be displayed natively it will be dithered to the nearest
available colour. Every video card has its own colour set. And, as far as I
know, ordinary bitmaps don't have palettes that you can define, unlike GIF
and the like.
I don't know whether this addresses your particular problem.
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Mason, John
> Sent: Monday, 2 October 2000 14:40
> To: Multiple recipients of list offtopic
> 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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