QTreeView help

**bepaald** · 15th August 2007, 13:31

Hello,

I need a little help getting a QTreeView to display some characters. Let me first say that I'm not a very good programmer and pretty new to QT.
I am trying to make a QTreeView which behaves like a multi-column QListView used to in qt3 (btw, why are columns no longer available in QListView? It doesn't seem necessary for the model/view-thing to remove them). My first question is just if this is basically correct. Here is my QTreeView code, I mostly pieced it together from examples:

Qt Code:

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#include <QtGui>
 
int main(int argc, char *argv[]){
 
  QApplication app(argc, argv);
 
  QTreeView *qtv = new QTreeView();
  qtv->setItemsExpandable(false);
  qtv->setRootIsDecorated(false);
  qtv->setUniformRowHeights(true);
  qtv->setSelectionBehavior(QAbstractItemView::SelectRows);
  qtv->setSelectionMode(QAbstractItemView::SingleSelection);
  qtv->setSortingEnabled(true);
  qtv->sortByColumn(0, Qt::AscendingOrder);
 
  QStandardItemModel *itemmodel = new QStandardItemModel();
  itemmodel->setHorizontalHeaderLabels(QStringList() << "First" << "Second" << "Third");
  for (int i = 0; i < 5; ++i)
    for (int j = 0; j < 3; ++j)
      itemmodel->setItem(i, j, new QStandardItem(QString("Row: ") + QString::number(i) + QString(", Column: ") + QString::number(j)));
 
  qtv->setModel(itemmodel);
  qtv->show();
 
  return app.exec();
}

#include <QtGui>

int main(int argc, char *argv[]){
  
  QApplication app(argc, argv);

  QTreeView *qtv = new QTreeView();
  qtv->setItemsExpandable(false);
  qtv->setRootIsDecorated(false);
  qtv->setUniformRowHeights(true);
  qtv->setSelectionBehavior(QAbstractItemView::SelectRows);
  qtv->setSelectionMode(QAbstractItemView::SingleSelection);
  qtv->setSortingEnabled(true);
  qtv->sortByColumn(0, Qt::AscendingOrder);

  QStandardItemModel *itemmodel = new QStandardItemModel();
  itemmodel->setHorizontalHeaderLabels(QStringList() << "First" << "Second" << "Third");
  for (int i = 0; i < 5; ++i)
    for (int j = 0; j < 3; ++j)
      itemmodel->setItem(i, j, new QStandardItem(QString("Row: ") + QString::number(i) + QString(", Column: ") + QString::number(j)));

  qtv->setModel(itemmodel);
  qtv->show();

  return app.exec();
}

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Now (though it might not be the proper or most efficient way to do it) this seems to do what I want it to. But when I put a string in like "ElÃ©na" in the model using itemmodel->setItem(i, j, new QStandardItem(QString("ElÃ©na"))), the treeview shows "ElÃƒÂ©na" instead. If I access the text in the model using itemmodel->item(i,j)->text() it does show the correct text. I had this problem in qt3 as well, I just thought while I was learning qt4, I might as well get this out of the way too. So could someone please help me fix this?

Thanks,
bepaald