Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!thunder.mcrcim.mcgill.edu!snorkelwacker.mit.edu!apple!claris!UUCP!peirce
From: peirce@outpost.UUCP (Michael Peirce)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Correct way in Dialog to set Icons on the fly
Message-ID: <D2150035.jcvzon@outpost.UUCP>
Date: 29 Jun 91 05:14:22 GMT
Reply-To: peirce@outpost.UUCP (Michael Peirce)
Organization: Peirce Software
Lines: 32
X-Mailer: uAccess - Mac Release: 1.5


In article <6706@ns-mx.uiowa.edu>, wolf@piquet.cipl.uiowa.edu (Michael J. Wolf) writes:
> What is the proper way to set and change ICON dilaog items?
> 
> I would like to use the same dialog template but set the ICONs as
> I go (ie, just before or while the dialog is visible).
> 
> Should I get the ItemHandle, and go to the correct offset (something
> like 10 bytes from where the handle points) and manual modify this 
> integer to the ID of the ICON I want to be displayed now.  Afterward
> do a draw dialog?

I'm not sure about icons (i tried it), but I know you can
set the item handle for a PICT item to a Picture Handle and 
have the the new picture drawn.

You might try this with a handle to an icon too.

Here's how it's done with PICTs:

   GetDitem(theDialog,kPict2Item,itemType,pictH,itemRect);
   pictH := aPictHandle;
   SetDItem(theDialog,kPict2Item,itemType,pictH,itemRect);


Or if it doesn't work with icons, use PICTs instead...

-- michael

--  Michael Peirce         --   outpost!peirce@claris.com
--  Peirce Software        --   Suite 301, 719 Hibiscus Place
--  Macintosh Programming  --   San Jose, California 95117
--           & Consulting  --   (408) 244-6554, AppleLink: PEIRCE