Re: EXC_BAD_ACCESS when calling CGContextDrawLayerInRect
Re: EXC_BAD_ACCESS when calling CGContextDrawLayerInRect
- Subject: Re: EXC_BAD_ACCESS when calling CGContextDrawLayerInRect
- From: "Carter R. Harrison" <email@hidden>
- Date: Mon, 14 Apr 2008 14:56:12 -0400
cgback is a CGLayerRef instance variable that I setup when the view is
inited. I use the following line:
cgback = CGLayerCreateWithContext(context, CGSizeMake([self
bounds].size.width, [self bounds].size.height), NULL);
It's my understanding that I do not need to retain cgback with
CFRetain(), but I do need to release cgback in my dealloc() method -
which I'm doing.
On Apr 14, 2008, at 12:02 PM, Nathan Vander Wilt wrote:
On Apr 13, 2008, at 7:15 AM, Carter R. Harrison wrote:
CGContextRef context = [[NSGraphicsContext currentContext]
graphicsPort];
CGContextDrawLayerInRect(context, CGRectMake([self frame].origin.x,
[self frame].origin.y, [self frame].size.width, [self
frame].size.height), cgback);
cgback is a instance variable pointing to a CGLayer.
So my code works, the correct things are being drawn to my view
(more or less), but what happens is that after several seconds of
use, the app crashes and I get an EXC_BAD_ACCESS error.
Can you post more information regarding your cgback variable? How is
it being allocated? That parameter seems to be the most likely
culprit.
-nvw
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