Re: CGContextConcatCTM: invalid context 0x0. How to fix?
Re: CGContextConcatCTM: invalid context 0x0. How to fix?
- Subject: Re: CGContextConcatCTM: invalid context 0x0. How to fix?
- From: "Gerriet M. Denkmann" <email@hidden>
- Date: Thu, 19 Sep 2013 14:31:30 +0700
On 19 Sep 2013, at 14:26, Lennart Thelander <email@hidden> wrote:
> Hi,
>
> This is more a Cocoa question than an Xcode question, but here goes:
>
> The value of the first parameter to these functions are NULL. In the documentation, this parameter is called "CGContextRef c".
> So make sure "c" is not NULL (and has a valid value).
The problem: Xcode tells me I am nowhere using any of these functions. So what to do next?
Gerriet.
>
> Regards
> Lennart Thelander
>
> 19 sep 2013 kl. 09.18 skrev Gerriet M. Denkmann:
>
>> Using the new Xcode 5.0 with some iOS app, I get told:
>>
>> CGContextConcatCTM: invalid context 0x0. This is a serious error. This application, or a library it uses, is using an invalid context and is thereby contributing to an overall degradation of system stability and reliability. This notice is a courtesy: please fix this problem. It will become a fatal error in an upcoming update.
>>
>> Same with CGBitmapContextCreateImage: invalid context 0x0.
>>
>> But Xcode also tells me: No Results for "CGBitmapContextCreateImage" (nor for CGContextConcatCTM). The only CG... it finds is CGRect, CGFloat, CGSizeMake, etc.
>>
>> So: where do I have to look to get rid of this "serious error"?
>>
>> Gerriet.
>>
>
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