CGPDFOperatorTableSetCallback fails with `ID' isn't an operator.

Does anyone know why the following call fails?

CGPDFOperatorTableSetCallback(operatorTable, "ID", &callback);

The PDF specification seems to indicate that ID is an operator?

BTW what is the proper topic/subtopic for questions about Quartz? Wasn't sure what topic on the new forums to post this under.

CGPDFOperatorTableSetCallback fails with `ID' isn't an operator.
 
 
Q