Path: utzoo!utgpu!watmath!iuvax!ndcheg!ndmath!dierks
From: dierks@ndmath.UUCP (Tim Dierks)
Newsgroups: comp.sys.mac.programmer
Subject: Help: Calling Pascal functions from MPW C
Message-ID: <1340@ndmath.UUCP>
Date: 18 Mar 89 19:53:49 GMT
Organization: Math. Dept., Univ. of Notre Dame
Lines: 13

I am writing an INIT that will patch ModalDialog and replace the filterProc
passed by the original program with one of my own design.  However, the
first thing I want to do in my filterProc is call the original filterProc.
Although my final version will be written in MPW assembler, I am working on
the algorithms, etc, in MPW C.  However, I can't figure out how to call a Pascal
function I have a pointer to (the filterProc) from MPW C.  I need to be able to
pass the 3 parameters that go to a filterProc and collect the Boolean [really
an unsigned char.]  In LSC I'd use CallPascalB(theDlogPtr,theEventPtr,theItem,
theProc).  What's the equivalent for MPW C?

Tim Dierks
dierks@darwin.cc.nd.edu
dierks@ndmath.cc.nd.edu