osx - Xcode 'invalid conversion' when using objective-c++ -


So if I run my program with implementation then it works fine. Just change it. Mm causes this line ... 

  cgicontextfreave myContext = [[NSGIX syntax currentContax] Graphicsport];

To throw this error ... 

  Error: 'invalid conversion from zero *' to 'CGContext *'  < / Pre> 
 Why does anyone have any idea to change it, or why to fix it? In this case,  void *  ( of return code - [NSGraphicsContext graphicsPort]  void *  >) The underlying conversion from a  CGContextRef  is invalid You can make a conversion explicitly in this way: 
 
  CGCentextFIRFUS myContext = static_cast & lt; CGContextRef & gt; ([[NSGraphicsContext PresentContacts] Graphicsport) ;; See SO questions for discussion of the  
 
 C ++  static_cast  operator.

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