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Re: Callbacks in C libraries
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Re: Callbacks in C libraries


  • Subject: Re: Callbacks in C libraries
  • From: Eric Shepherd <email@hidden>
  • Date: Sat, 14 Jun 2003 23:49:47 -0400

I have no idea. I heard from a friend that something like this was possible, so I experimented for a while until it worked. :)

On Saturday, June 14, 2003, at 09:05 PM, Prachi Gauriar wrote:

On Saturday, June 14, 2003, at 07:47 PM, Eric Shepherd wrote:

What I've discovered is that I can prototype my callback in my class's header file, then actually include my callback function right inside the method that results in it being called, like this:

- (int) doScan: (ConfigRec *)cfgRec {
int CallbackFunc(ConfigRec *cfgRec, const DataRec *pRecord) {
[fileList addObject: [NSString stringWithCString: pRecord->filename]];
// More code here
return 0;
}

RunFileScan(cfgRec, CallbackFunc);
}

This works like a charm.

Is this standard C (ANSI or C99), or is it a GCC feature?

-Prachi

--
Eric Shepherd
Owner
Syndicomm
http://www.syndicomm.com
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References: 
 >Re: Callbacks in C libraries (From: Prachi Gauriar <email@hidden>)

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