Constructor implementation

      ~THelloWorld( GUIBundle* b ) :
          TDocumentComponentView( b )
      {
          CheckForInitialize();
          SetAllocatedArea( TGRect( 0,0, 1000, 1000 ) );
  
      //The code to create the group attribute bundles, wagonAwayWheels, 
      //wagonBody, and wagonTowardWheels precedes the wagon group code to follow.
  
          fWagon = new TGraphicGroup();
  
          fWagon->AdoptFirst( wagonAwayWheels );
          fWagon->AdoptLast( wagonBody );
          fWagon->AdoptLast( wagonTowardWheels );
      }