Re: redraw problem
Re: redraw problem
- Subject: Re: redraw problem
- From: Tony Romano <email@hidden>
- Date: Thu, 29 Jul 2010 21:51:57 -0700
That was it Michael. Thank you.
On Jul 29, 2010, at 9:19 PM, Michael Ash wrote:
> On Thu, Jul 29, 2010 at 4:26 PM, Tony Romano <email@hidden> wrote:
>> I have a document based Cocoa App and I am trying to understand what is causing these residual lines to happen. Attached is a link to what I am referring to. The solid blue lines are the new lines after they have moved. The greyish lines are what's being left behind. http://dl.dropbox.com/u/5614061/Screen shot 2010-07-29 at 1.08.36 PM.png. Notice they look like borders from the old lines.
>
> It looks like you're changing the filled region of an
> irregularly-shaped window. This is perfectly fine, but note that
> NSWindow will *not* automatically update the window's shadow when you
> do so. Your artifacts look like leftover shadow to me, so I'd guess
> that this is what's happening.
>
> If I'm right, you can simply do [window invalidateShadow] any time you
> change the filled region to force the window to regenerate the shadow.
>
> Mike
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-Tony
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