RE: [GD-Windows] GetDIBits() return values

[Bryan W. <br...@xm...>]

Are you absolutely positive you don't call anything that sets the =
Windows
error before you read it?

I spent a few days trying to figure out why a certain bit of code always
logged windows error 2, but I couldn't get an error when run in the
debugger.  After a while, I realized that the logging macros were =
resetting
the error code to either 0 or 2.  The error 2 came from trying to write =
to
the debugger when it wasn't attached.

Just something to look for.


Bryan.

-----Original Message-----
From: gam...@li...
[mailto:gam...@li...] On Behalf Of =
Brian
Hook
Sent: Wednesday, January 04, 2006 3:42 PM
To: gam...@li...
Subject: [GD-Windows] GetDIBits() return values

On occasion GetDIBits() returns 0, indicating failure, but=20
GetLastError() returns 0, indicating success.  The dimensions I pass=20
in are scan start=3D0,scanlines=3D12.  Everything seems to work fine, =
but=20
very occasionally (< 1% of the time) I get a return value that !=3D 12.

Anyone know under what conditions this might happen?

Thanks,

Brian



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