Hi, I have strange problem. I have two class: mainWindow inherits by QMainWindow, and myWidget inherits by QWidget. In mainWindow class i create model, and myWidget class i create QTableView. Now i would like copy selection, but not in myWidget, only mainWindow class, so i did something like this in myWidget:
Qt Code: 
  1. connect(table->selectionModel(),SIGNAL(
  2.       selectionChanged(const QItemSelection &,const QItemSelection &)),
  3.           this,SIGNAL(updateSelect(const QItemSelection &,const QItemSelection &)));
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And in mainWindow:
Qt Code: 
  1. connect(widget,SIGNAL(updateSelect(const QItemSelection &,const QItemSelection &)),
  2.           this,SLOT(updateSelection(const QItemSelection&,const QItemSelection &)));
  3.  
  4. void mainWindow::updateSelection(const QItemSelection &selection,const QItemSelection &){
  5.   this->selection = selection;
  6. }
  7.  
  8. void mainWindow::copyCells(){
  9.   QList<QItemSelectionRange> models = selection;
  10.   if(models.isEmpty())
  11.     return;
  12.   QModelIndex start = models[0].topLeft();
  13.   QModelIndex stop = models[0].bottomRight();
  14.   QString text;
  15.   for(int i=start.row(); i<=stop.row(); ++i) {
  16.     for(int j=start.column(); j<=stop.column(); ++j) {
  17.       if(model->item(i,j)->text() != "="){
  18.         text+= model->item(i,j)->text();
  19.         text += ' ';
  20.       }
  21.     }
  22.     text += '\n';
  23.   }
  24.   QApplication::clipboard()->setText(text);
  25. }
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Now, when i select an area and try copy, it copy random value, further only one left or right column, or top or bottom row. Function copyCells works well, i tested it earlier. Where I make error?