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From: dagl@ur-tut.UUCP
Newsgroups: comp.sys.mac
Subject: ParamText Question
Message-ID: <73@ur-tut.UUCP>
Date: Sun, 13-Sep-87 16:45:37 EDT
Article-I.D.: ur-tut.73
Posted: Sun Sep 13 16:45:37 1987
Date-Received: Tue, 15-Sep-87 01:19:15 EDT
Reply-To: dagl@ur-tut.UUCP (Dave Glowny)
Organization: Univ. of Rochester Computing Center
Lines: 21

I'm writing a program (with Lightspeed C) which plots functions, and am using 
a dialog with an editText item to get a string representing the function from 
the user. A default value (the previous function string entered by the user, 
if any) is copied into the item with SetIText.

The problem I've encountered is that when the string contains one of the
ParamText keys (^0,^1,^2,^3) the ParamText strings are substitued in place.
For example, if the user enters "x^2" in the f(x) box in my dialog, the next
dialog invocation will show f(x) with the default value of "x", substituting
the null string for ^2. (I do use ParamText1 for my alerts, but I pass null
strings for the other 3 arguments)

Is there any way to disable this substitution process ?  I attempted
ParamText("\P^0","\P^1","\P^2","\P^3"); but this only caused an infinte loop
of substitution as I observed with TMON.

-- 
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David Glowny |  Internet: dagl@tut.cc.rochester.edu 
             |  UUCP: {decvax,cmcl2}!rochester!ur-tut!dagl
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