cppOpenCD

// This function should be called after the user has selected a file
// to open.  fileName should be a string representing the directory
// path and file name of the source file.  The return value of int
// can be used as a flag to indicate if the file load was successful.
// It should call cppDrawEdges() and cppDrawVertices() after g_parse
// returns a legal object.
//
// Modification History:
//
// 11/21/95 - Tom Kneeland (tomk@ccs.neu.edu)
// 	Added a call to cppFixEdgeObjs() to remove the duplicate vertex objects
// created when the file fileName was parsed in.
//  	Reversed the calling order of cppDrawVerticies() and cppDrawEdges()
// per request of the tcl group.

*operation* int cppOpenCD (char* fileName)
   *wrapper* Graph
      *prefix*
         (@ if ((Graph*) this -> g_parse(fileName) == NULL )
	       return_val = 0;          // return 0 if g_parse finds error
	    else {
	       this->cppFixEdgeObjs();
	       this -> cppDrawVertices();
	       this -> cppDrawEdges();
	       return_val = 1;          // return 1 if no g_parse error
	    }	    
         @)