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From: jdm@ut-ngp.UUCP
Newsgroups: comp.sys.mac
Subject: SetIText in LightSpeed C DA
Message-ID: <5278@ut-ngp.UUCP>
Date: Tue, 26-May-87 19:09:26 EDT
Article-I.D.: ut-ngp.5278
Posted: Tue May 26 19:09:26 1987
Date-Received: Thu, 28-May-87 00:55:34 EDT
Organization: UTexas Computation Center, Austin, Texas
Lines: 50
Keywords: How do you get SetIText to Update the Text?


	I'm writing a desk accessory in Lightspeed C that puts up a simple 
dialog window with three EditText items. I have occasion to change the text of 
one of those items, using "SetIText," as I have done many times in various 
application programs. 
	For some reason SetIText does not draw the new text, though 
Inside Mac says explicitly that it will do so (it doesn't generate an update
event either). I have previously found SetIText works fine in applications. 
Now in the DA, I call "DrawDialog,", which does properly update the 
display of the item, but is kludgy since it redraws all the items, even the 
StatText.  Anybody know why SetIText doesn't work, and/or what's a better way to
draw the item?
	Here's a code fragment containing the call's I do:

---------------------------------------------------------------
...
DCtlPtr dce;		/* global: device control entry  */
...
main(p,d,n)
{
...
}
...
Handle DItemHandle(itemNo)  / *returns a handle to the Dialog Item "itemNo" */
int itemNo;
{
	Rect theRect;
	Handle itemHdl;
	int type;
	
	GetDItem(dce->dCtlWindow,itemNo,&type,&itemHdl,&theRect);
	return(itemHdl);
}

SetNo(theNo,itemNo)  /* set the Dialog Item "itemNo" to the  number "theNo" */
int itemNo;
double theNo;
{
	Str255 theText;
	
	ftoa(theText,theNo);   /* convert theNo to a Pstring */
	SetIText(DItemHandle(itemNo),theText);  /* <-----The Offending Call */
	DrawDialog(dce->dCtlWindow);	/* Why is this necessary?? */
}
------------------------------------------------------------------

	Thanks for your help

						Jim Meiss
						jdm@ut-npg.UTEXAS.EDU