QTreeWidgetItem + richtext

**pfid** · 7th July 2009, 09:38

Hi all,

i already spent some time googling & searching the forums, but somehow i failed to come up with a working solution. what i'm trying to do is, to simply give a QTreeWidgetItem the ability to display richtext.

However, i have some semi-working code i took from here: Link

Qt Code:

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class RichDelegate : public QItemDelegate
{
   public:
 
      void paint( QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index ) const
      {
          painter->save();
          QTextDocument doc;
          doc.setHtml( index.data().toString() );
          QAbstractTextDocumentLayout::PaintContext context;
          doc.setPageSize( option.rect.size());
          painter->setClipRect( option.rect );
          painter->translate(option.rect.x(), option.rect.y());
          doc.documentLayout()->draw(painter, context);
          painter->restore();
      }
};

class RichDelegate : public QItemDelegate
{
   public:

      void paint( QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index ) const
      {
          painter->save();
          QTextDocument doc;
          doc.setHtml( index.data().toString() );
          QAbstractTextDocumentLayout::PaintContext context;
          doc.setPageSize( option.rect.size());
          painter->setClipRect( option.rect );
          painter->translate(option.rect.x(), option.rect.y());
          doc.documentLayout()->draw(painter, context);
          painter->restore();
      }
};

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I think it might have some problems still with sizes, since i dont reimplement the sizeHint() method (i read about that in some of the various other richtext-delegate threads).
this, however, is not my problem. the above code works for a QTableView, and the rows display richtext/html nicely. however, once i put

treeWidget->setItemDelegateForColumn(2, new RichDelegate());

my column in the treewidget wont display anything at all and will remain blank.
what am i doing wrong? i could switch to QTreeView/model in case thats the only solution, but i would prefer sticking to my QTreeWidget if possible.

any help appreciated