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Re: redrawing in a canvas

To: REALbasic NUG <realbasic-nug at lists dot realsoftware dot com>
Subject: Re: redrawing in a canvas
From: Norman Palardy <palardyn at shaw dot ca>
Date: Sat, 30 Oct 2004 23:41:43 -0600
Delivered-to: realbasic-nug at lists dot realsoftware dot com
References: <55DA17E4-2AEB-11D9-9E96-000A95A9544A at shaw dot ca> <FB01A957-2AEB-11D9-8237-000A95983FBE at ljug dot com> <EB5320EA-2AEC-11D9-9E96-000A95A9544A at shaw dot ca> <ABCC951C-2AF9-11D9-937F-000A959DF1D2 at realsoftware dot com>

On Oct 30, 2004, at 10:59 PM, Jonathan Johnson wrote:


QuickDraw did antialiasing as well (although I thought it would make a small difference because QuickDraw's antialiasing is generally more subtle than Quartz's). However, this is behaving as I would expect it -- the antialiasing is basically translucent, and when you draw translucent things over and over, the result is a darker image.

Refresh will cause it erase the background, which is why that solves it.

I'm using refreshrect instead so the window background can show through.

Refresh would make it flicker on OS 9 and Windows wouldn't it ?

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