coding style

is this C style coding?

I don't seem to see much C++ code in this way. 

is this a bad programming practice? 

code seem ugly coding this way.


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CATCHERROR(m_Cnn,0)

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#define CATCHERROR(ptr,a)	catch(_com_error &e)\
			{\
				ErrorHandler(e,m_ErrStr);\
				ptr=NULL;\
				return a;\
			}