On 01/08/2011, at 11:25 AM, Izak van Langevelde wrote:

>> Are you passing the bytes (or CFData) to the 'data provider' parameter? If 
>> so, that's wrong - you need to pass a CGDataProviderRef. Create one using 
>> CGDataProviderCreateWithData or CGDataProviderCreateWithCFData, depending on 
>> what form your bytes are in.
> 
> I'm creating one with  CGDataProviderCreateSequential, using callbacks.
> 


Seems like a lot of work for your situation. Does it work if you use one of the 
others?

--Graham


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