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Newcomers DBPro Corner / about set current bitmap 0

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PingXiang
10
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Joined: 19th May 2013
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Posted: 7th Jun 2013 06:14
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what is "bitmap 0"?
It does not need to create
Whether it is the whole screen ?
Whether it is a empty bitmap extending the entire screen
?
or a transparent bitmap?

Chinese
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Rudolpho
18
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Joined: 28th Dec 2005
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Posted: 8th Jun 2013 13:55
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Bitmap 0 is the backbuffer I believe.


"Why do programmers get Halloween and Christmas mixed up?"
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29 games
18
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Joined: 23rd Nov 2005
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Posted: 8th Jun 2013 19:09
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Bitmap zero is the screen. From the help files for the SET CURRENT BITMAP command:

Quote: "Setting the current bitmap to zero points all drawing operations to the screen"


one of these days I'll come up with a better signature
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Rudolpho
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Posted: 9th Jun 2013 02:03
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Yeah, but you never draw directly to the screen, you draw to the back buffer and then switch it with the front buffer (or "the screen") when you call sync


"Why do programmers get Halloween and Christmas mixed up?"
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