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From: bin@primate.wisc.edu (Brain in Neutral)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Str255
Message-ID: <3869@uakari.primate.wisc.edu>
Date: 31 Jan 91 07:29:58 GMT
References: <1991Jan31.061259.20093@ux1.cso.uiuc.edu>
Sender: bin@primate.wisc.edu
Reply-To: bin@primate.wisc.edu
Lines: 27

From article <1991Jan31.061259.20093@ux1.cso.uiuc.edu>, by dmmg1176@uxa.cso.uiuc.edu (David M Marcovitz):
| 
| I am using Think C 4.0 with TCL.  I am trying to use the gBartender
| class to change menus.  On page 246 of the manual, it gives an
| example:
| 
| gBartender->SetCmdText(cmdCopy, "\pCopy Picture");
| 
| The second argument is supposed to be a Str255.  If I use the command
| just like this, the compiler doesn't recognize the second argument as
| being the right type.
| 
| (2) Is there a way to do this without declaring a variable?

How about:

	gBartender->SetCmdText(cmdCopy, (StringPtr) "\pCopy Picture");

The disparity comes about because literal "...." constructs are
considered char arrays, whereas Str255 are array of unsigned chars.
This is really a pain, but necessary, because otherwise operations
using the length byte of Str255 variables are dangerous in that you
can get sign-extension if the length of the string is > 127.

--
Paul DuBois
dubois@primate.wisc.edu