1  #ifndef __NULL_TRANSFORM__
 2  #define __NULL_TRANSFORM__
 3  
 4  
 5  
 6  #include "Transform.h"
 7  #include "TransformFactory.h"
 8  
 9  
10  
11  class NullTransform : public Transform
12  {
13  protected:
14  	std::string DebugDescription();
15  	NullTransform();
16  
17  public:
18  	static CFTypeRef Make() CF_RETURNS_RETAINED;
19  	static TransformFactory* MakeTransformFactory();
20  	
21  	virtual void AttributeChanged(CFStringRef name, CFTypeRef value);
22  };
23  
24  
25  
26  #endif