Path: utzoo!attcan!uunet!lll-winken!lll-ncis!helios.ee.lbl.gov!ux1.lbl.gov!beard
From: beard@ux1.lbl.gov (Patrick C Beard)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Updating dialogs
Keywords: update dialog icon
Message-ID: <1619@helios.ee.lbl.gov>
Date: 6 Jan 89 07:52:10 GMT
References: <373@lclark.UUCP>
Sender: usenet@helios.ee.lbl.gov
Reply-To: beard@ux1.lbl.gov (Patrick C Beard)
Organization: Lawrence Berkeley Laboratory, Berkeley
Lines: 24

In article <373@lclark.UUCP> dan@lclark.UUCP (Dan Revel) writes:
>What's the best way to update a non-modal dialog after changing one of
>its dialog items?
>Here's a synopsis of the code I have now:
>	GetDItem(...);
>	SetDItem(...);
>	DrawDialog(...);
To speed things up (I'm assuming you know what you are doing with your
Get/SetDItem  calls) you should try using UpdtDialog(), IM IV-60, which
allows you to specify the Dialog and a region to update.  Just get the
rectangle of the item, call RectRgn() to generate the region, and just
that item will get redrawn.  

Now, a better way to do it might be to try a user item that calls a routine
that does the PlotIcon itself, and keep an array of icons the index of
which is updated when the radio button is hit.  For the fastest performance
do the PlotIcon immediately, and let the user item handle updates.  For
more info about user items, consult the Dialog Manager chapter.
>
>Thanks for your help!
You are welcome!
>Dan
Patrick Beard
Lawrence Berkeley Laboratory