Re: Releasing a sub-view
Re: Releasing a sub-view
- Subject: Re: Releasing a sub-view
- From: Jeremy Dronfield <email@hidden>
- Date: Wed, 28 Apr 2004 13:45:03 +0100
You should release theView once you have added it to its superview,
thus:
[ssView addSubview:theView];
[theView release];
Then, if you want to reuse it, you should retain it before removing it:
[theView retain];
[theView removeFromSuperviewWithoutNeedingDisplay];
As for the "white flash", this is presumably your window redrawing
without theView. The documentation for NSView states that
-removeFromSuperview should never be invoked during display. Use
-removeFromSuperviewWithoutNeedingDisplay instead.
Hope this helps
Regards,
-Jeremy
On 28 Apr 2004, at 1:07 pm, Lorenzo wrote:
Hi,
I create a custom NSView
theView = [[XAView alloc] initWithFrame:theFrame];
now theView has retainCount = 1;
then I add it to a ScreenSaverView
[ssView addSubview:theView];
now theView has retainCount = 2;
when the ScreenSaverView calls
- (void)stopAnimation
{
[theView release];
[super stopAnimation];
}
theView has not been released because it has still retainCount = 1.
Anyway I see a good fade-out of the screen-saver. Instead if I call
- (void)stopAnimation
{
[theView removeFromSuperview];
[theView release];
[super stopAnimation];
}
theView has been released properly.
The problem is that when theView has been removed from the superview
I see a white flash on the screen. Then I see the fade-out.
How to avoid this annoying white flash?
Best Regards
--
Lorenzo
email: email@hidden
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