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DLL Talk / Bitmaps and bitmap pallets

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zog
16
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Joined: 13th Dec 2007
Location: Southport UK
Posted: 10th Feb 2008 05:01
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I would like to pass DarkBasic bitmaps to and from my DLL. I can see how you would do this using the MAKE MEMBLOCK FROM BITMAP command. I can see this will work fine for true colour bitmaps, but for bitmaps with only a few colours I need to map the bits to actual colours in a pallete. My question is how can I get at a bitmaps pallet and colour mapping information. ?

It would also be handy to be able to change pallet entries.

Thank for any help or suggestions in advance

Jack Taylor

Jack Taylor
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IanM
Retired Moderator
21
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Joined: 11th Sep 2002
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Posted: 10th Feb 2008 14:50
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I would assume that palette based bitmaps would be converted to 16 or 32 bit format when loaded.

I'll be happy to be proven wrong though.

[b]Utility plugins collection (updated 23/12/07) and
http://www.matrix1.demon.co.uk
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zog
16
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Joined: 13th Dec 2007
Location: Southport UK
Posted: 12th Feb 2008 08:13
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Thanks I will do some experimentation. There are no details though on how a 16 bit bitmap is mapped to actual colour values. I will make the assumption that it will be the same as in the windows SDK.

I looked for information in dark basic pro volume 2 ( page 1298 ), and I down loaded DarkGDK to look for details. Alas I did not find any more information.

Jack Taylor

Jack Taylor
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