Path: utzoo!attcan!uunet!mcsun!ukc!edcastle!cs.ed.ac.uk!vaila!nick
From: nick@vaila.cs.ed.ac.uk (Nick Rothwell)
Newsgroups: comp.sys.mac.programmer
Subject: THINK Class Library gotchas
Message-ID: <454@skye.cs.ed.ac.uk>
Date: 26 Sep 90 11:23:22 GMT
References: <AaxNIpe00Uh7M3Y2AS@andrew.cmu.edu>
Sender: nnews@cs.ed.ac.uk
Reply-To: nick@lfcs.ed.ac.uk
Organization: Wavetables 'R' Us
Lines: 25

... just starting out on this OOP stuff. Quite nice, on the whole, but
the TCL is no walk in the park.

A couple of gotchas:

	Inside a CPane::Draw(), don't call methods to do any kinds of
	graphics in other windows; you'll screw up the CPane and possibly
	the enclosing pane(s), in rather strange ways; or it may work
	sporadically. Took me a day to figure this out; fairly obvious
	in retrospect, but TransSkel didn't have any problems with this...

	Documentation: It says in the manual that your CDocument Dispose()
	method is responsible for disposing of itsMainPane. I think this is
	wrong. As far as I can tell, CDocument::Dispose() correctly blows
	away the document, the director, the window, and all the sub-views.

	Is anyone keeping track of any bugs and/or misfeatures of the TCL?
	I haven't found any bugs yet, but it would be nice to know (I'm
	using 4.0.2).


Nick Rothwell,	Laboratory for Foundations of Computer Science, Edinburgh.
		nick@lfcs.ed.ac.uk    <Atlantic Ocean>!mcsun!ukc!lfcs!nick
~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~
 "Now remember - and this is most important - you must think in Russian."