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May 2nd, 2002, 12:57 PM
#1
Thread Starter
Member
 how does BitBlt work?
just trying 2 figure it out
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May 2nd, 2002, 01:20 PM
#2
Good Ol' Platypus
It takes the bits of the pixels in the source and destination and uses the form of boolean algebra you specify in your raster operation field. It, of course, works very quickly.
All contents of the above post that aren't somebody elses are mine, not the property of some media corporation. 
(Just a heads-up)
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May 2nd, 2002, 01:28 PM
#3
Thread Starter
Member
sorry i didn't say clearly
i meant how can we use it i.e. what's the code for it and what does each bit of the code mean.
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May 2nd, 2002, 02:03 PM
#4
PowerPoster
*g*
What a good question.. did you ever think about using the Search function of this forum? I'm sure BitBlt is the most-discussed subject besides GetTickCount in thw whole G&G !
well however, see my website  http://fox.acky.net/vb/english/coding/tutorial/
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May 2nd, 2002, 02:03 PM
#5
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May 2nd, 2002, 02:06 PM
#6
PowerPoster
Again, Hack, all constants (SRCCOPY, SRCAND, aso.) are pre-defined in VB.. vbSrcCopy, vbSrcAnd, aso.
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May 2nd, 2002, 02:33 PM
#7
Good Ol' Platypus
My own bitblt tutorial (it hasnt been updated for a year, but it works!)
http://vbden.tripod.com/articles/invmask.htm
Also covers a technique called "inverse masking".
All contents of the above post that aren't somebody elses are mine, not the property of some media corporation.
(Just a heads-up)
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May 2nd, 2002, 03:43 PM
#8
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