hello.
I have access to a model in a custom delegate.
I tryed to change some values in this model but when I read data from the model the data are always the same.
I tryed to emit dataChange, but nothing.

this is the code

Qt Code: 
  1. bool CustomItemDelegate::editorEvent(QEvent *event, 
  3.     const QStyleOptionViewItem &option, 
  4.     const QModelIndex &index)
  5. {
  6. 	const QSortFilterProxyModel* modelx = 
  7. 	   static_cast<const QSortFilterProxyModel*>(index.model());
  8.  
  9. 	QDesignerWidgetBoxInterface::Widget widget =((WidgetBoxCategoryModel*)modelx->sourceModel())->widgetAt(index);
  10. 	((WidgetBoxCategoryModel*)modelx->sourceModel())->refresh();
  11.  
  12. 	m_strName = widget.name();
  13. 	QRect buttonRect( option.rect);
  14.     buttonRect.setWidth( 30);
  15.  
  16.  
  17. 	if(widget.getFunction() == QDesignerWidgetBoxInterface::Widget::Creator)
  18. 	{
  19. 		if( event->type() == QEvent::MouseButtonPress){
  20. 		}
  21. 		else if( event->type() == QEvent::MouseButtonRelease) {
  22.  
  23. 			if(m_pPrecedentPressedState != NULL && m_pPrecedentPressedState != &m_pressedState)
  24. 			    *m_pPrecedentPressedState = QStyle::State_Raised;
  25.  
  26. 				widget.setName("luigi");//CHANGE THE MODEL !!!!!!!
  27.  
  28. 			m_pressedState = *widget.getState();		
  29. 			if(m_pressedState == QStyle::State_Sunken )
  30. 				m_pressedState = QStyle::State_Raised ;
  31. 			else
  32. 			{	m_pressedState = QStyle::State_Sunken;
  33. 			}
  34. 			m_pPrecedentPressedState = &m_pressedState;
  35. 			m_strPressedName = widget.name();
  36. 		}
  37. 	}
  38.  
  39.     if( event->type() == QEvent::MouseButtonRelease) {
  40.  
  41. 		emit buttonClicked( index);
  42. 		emit pressDel(m_strName);	
  43. 	}    
  44. 	((WidgetBoxCategoryModel*)modelx->sourceModel())->ChangeData();
  45. 	return true;
  46.  
  47. }
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((WidgetBoxCategoryModel*)modelx->sourceModel())->ChangeData();
WidgetBoxCategoryModel is a custom model with into this function:

Qt Code: 
  1. void WidgetBoxCategoryModel::ChangeData()
  2. {
  3.  
  4. 	dataChanged(index(0,0),index(2,2));
  5. 	emit dataChanged(index(0,0),index(2,2));
  6. }
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