Path: utzoo!utgpu!news-server.csri.toronto.edu!helios.physics.utoronto.ca!ists!terry
From: terry@ists.ists.ca (Terry Lim)
Newsgroups: comp.sys.mac.programmer
Subject: Loading and running XFCNs
Message-ID: <16819@ists.ists.ca>
Date: 2 Jan 91 17:24:04 GMT
Reply-To: terry@ists.ists.ca (Terry Lim)
Organization: Institute for Space and Terrestrial Science
Lines: 18
Organization:

Supposing I have a HyperCard XFCN resource, the functionality of which
is pretty well independent of HyperCard (i.e. no [or hardly any]
callbacks).

Should I not be able to GetResource('XFCN',resid), lock down the
resulting handle, and use the dereferenced pointer as a ProcPtr, passing
it a homebrew XCmdBlock? Anyone have a code snippet in C showing how
it's done? I am assuming that any callbacks are handled by supplying
the entryPoint routine within the calling segment.

I've done this sort of thing with 'CODE' resources before and there
seems to be an UNLNK at the very beginning of XFCNs, so I would expect
this to be do-able...?

Cheers,
Terry Lim
terry@ists.ists.ca