WXDLLIMPEXP_CORE CGDataConsumerRef wxMacCGDataConsumerCreateWithCFData( CFMutableDataRef data );
WXDLLIMPEXP_CORE CGDataProviderRef wxMacCGDataProviderCreateWithMemoryBuffer( const wxMemoryBuffer& buf );
WXDLLIMPEXP_CORE CGDataConsumerRef wxMacCGDataConsumerCreateWithCFData( CFMutableDataRef data );
WXDLLIMPEXP_CORE CGDataProviderRef wxMacCGDataProviderCreateWithMemoryBuffer( const wxMemoryBuffer& buf );