hi,
i get a selection model from a treeview and connect signal
selectionChanged to the following method:

Qt Code: 
  1. void
  2. Container_Widget::selectionChanged(const QItemSelection& selected, 
  3. 				   const QItemSelection& deselected)
  4. {
  5.  
  6.   printf("<Container_Widget::selection changed()>\n");
  7.   fflush(stdout);
  8.  
  9.   QModelIndexList indexlist = selected.indexes();
  10.   QListIterator<QModelIndex> it(indexlist);
  11.  
  12.   while(it.hasNext()) {
  13.  
  14.     QModelIndex modelindex = it.next();
  15.  
  16.     if(!modelindex.isValid()) {
  17.       printf("Container_Widget::selectionChanged() : model index not valid \n");
  18.       fflush(stdout);
  19.       continue;
  20.     }
  21.  
  22.     printf("Container_Widget::selectionChanged() : row = %d, col = %d \n",
  23. 	   modelindex.row(), modelindex.column() );
  24.     fflush(stdout);
  25.  
  26.     Container_ModelItem* item
  27.       = static_cast<Container_ModelItem*>(modelindex.internalPointer());
  28.  
  29.     ... call some method of item -> segfault !!
  30.  
  31.   }
  32.  
  33.   printf("</Container_Widget::selection changed()>\n");
  34.   fflush(stdout);
  35.  
  36. }
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the problem is that the internal pointer of the model index
cannot be of class Container_ModelItem,
since if i call a method of this class the program crashes.
i checke already all methods of the model which return a QModelIndex,
i could'nt find a mistake there.
where is the mistake?

bets regards,
jh