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From: dorner@pequod.cso.uiuc.edu (Steve Dorner)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Updating ICONs in a dialog box
Message-ID: <1991Apr3.175159.8838@ux1.cso.uiuc.edu>
Date: 3 Apr 91 17:51:59 GMT
References: <1991Apr3.142215.2787@bellcore.bellcore.com> <1991Apr3.115045.8589@umiami.ir.miami.edu>
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> The problem is that the text updates as I expected, but in order to get the
> new icon to appear, I have to call DrawDialog to redraw the entire dialog
> box.  This is slow and makes the entire dialog flicker.

Invalidate the item's rect, then call BeginUpdate, DrawDialog, and EndUpdate.
Won't be any faster, but won't flicker.
--
Steve Dorner, U of Illinois Computing Services Office
Internet: s-dorner@uiuc.edu  UUCP: uunet!uiucuxc!uiuc.edu!s-dorner