I fill my QGraphicsTextItem with QTextDocument text image and all style i rotate this floating text and image like other paint. Now i like to lock the text and on qmenu , i swap QGraphicsTextItem to other flag ...
Why the parent can write inside? and paint this objekt? parent is only QGraphicsScene..!

how i can solve this?

My enum is valid and display correct¨!

Qt Code: 
  1. /* class FloatDiagram : public QGraphicsTextItem */
  2. /* FloatDiagram( const GenAttribute &p , QMenu *Diss , QGraphicsItem *parent, QGraphicsScene *scene ) */
  3.  
  4. void FloatDiagram::FloatLock()
  5. {
  6.     setOpenExternalLinks(true); 
  7.     setTextInteractionFlags(Qt::NoTextInteraction); 
  8.     setTextInteractionFlags(Qt::LinksAccessibleByMouse);
  9.     setTextInteractionFlags(Qt::TextBrowserInteraction);
  10.     modus = MODUS_LOCK;  /* enum write protect not move  only click link  */
  11. }
  12.  
  13. void FloatDiagram::FloatUnLock()
  14. {
  15.     setFlag(QGraphicsItem::ItemIsMovable, true);
  16.     setFlag(QGraphicsItem::ItemIsSelectable, true);
  17.     setTextInteractionFlags(Qt::NoTextInteraction);   /* edit on double click if not lock */
  18.     modus = MODUS_MOVE;  /* enum to move and edit */
  19. }
To copy to clipboard, switch view to plain text mode