20 #ifndef __WORLDQSCENE_INC__ 
   21 #define __WORLDQSCENE_INC__ 
   29 #include    <QGraphicsScene> 
   55     WorldQScene     : 
public QGraphicsScene, 
public MemTrack        {
 
   94     inline World *      world               ( 
void )
 const  
   98     inline bool         hasWorld            ( 
void )
 const  
   99     { 
return w_ != NULL; }
 
  112             const QString &     s_file,
 
  117     bool                closeWorld           ( QString & s_err );
 
  127     bool                loadWorld           ( 
World * w, QString & s_err );
 
  130     bool                save                ( QString & s_err );
 
  133     bool                saveAs              ( QString & s_err );
 
  136     const QString &     associatedFile      ( 
void )
 const 
  140     bool                hasAssociatedFile   ( 
void )
 const 
  163 #endif // __WORLDQSCENE_INC__