On 20 Aug 2008, at 11:16, Ken Thomases wrote:
Well, you can try to achieve this result with the Objective-C
runtime. The better approach would be to have the C function be a
very simple wrapper around an Objective-C method (as you
illustrated) and then have that method invoke 'super' if necessary.
Gosh, there's nothing quite like keeping it simple, is there?! So
obvious once someone rubs your nose in it. :-)
To turn your suggestion into code, using the callback to jump straight
back into the object, passing in any info that the callback provided,
we could do something like:
void operator_Tj(CGPDFScannerRef scanner, void *info)
{
[(MyObject *)info operator_Tj_WithScanner:scanner];
}
or, more generically:
void myCallbackFunction(<some argument list>, void *myObject)
{
[(id)myObject myObjectMethodToHandleThisCallbackWithArg1:arg1
arg2:arg2 etc:etc];
}
Cool!
António
----------------------------------------------------
There is nothing as strong as real gentleness, and
there is nothing as gentle as real strength.
----------------------------------------------------
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