setColumnWidth problem

[Midek]

setColumnWidth doesn't work for me. Here is my code:

treeExample::treeExample(QWidget *parent)
: QWidget(parent)
{
ui.setupUi(this);

QStandardItem *item;
model = new QStandardItemModel(0,3);

model->setHeaderData(0,Qt::Horizontal,QObject::tr("Date" ));
model->setHeaderData(1,Qt::Horizontal,QObject::tr("Time" ));
model->setHeaderData(2,Qt::Horizontal,QObject::tr("Proc" ));

item = new QStandardItem("First");
model->setItem(0, 0, item);

item = new QStandardItem("Sec");
model->setItem(0, 1, item);

item = new QStandardItem("Thi");
model->setItem(0, 2, item);

QTreeView *tree = ui.treeView;

tree->setModel(model);
tree->setColumnWidth(0,100);
tree->setColumnWidth(1,20);

tree->show();

}


What is wrong?
Thanks

[Lykurg]

What does not work? This works fine for me:

#include <QtGui>
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
 
    QStandardItemModel model(1,3);
    model.setHeaderData(0,Qt::Horizontal,QObject::tr("Date" ));
    model.setHeaderData(1,Qt::Horizontal,QObject::tr("Time" ));
    model.setHeaderData(2,Qt::Horizontal,QObject::tr("Proc" ));
 
    model.setItem(0, 0, new QStandardItem("First"));
    model.setItem(0, 1, new QStandardItem("Second"));
    model.setItem(0, 2, new QStandardItem("Third"));
 
    QTreeView tree;
    tree.setModel(&model);
    tree.setColumnWidth(0,100);
    tree.setColumnWidth(1,20);
    tree.show();
 
    return a.exec();
}

#include <QtGui>

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

    QStandardItemModel model(1,3);
    model.setHeaderData(0,Qt::Horizontal,QObject::tr("Date" ));
    model.setHeaderData(1,Qt::Horizontal,QObject::tr("Time" ));
    model.setHeaderData(2,Qt::Horizontal,QObject::tr("Proc" ));

    model.setItem(0, 0, new QStandardItem("First"));
    model.setItem(0, 1, new QStandardItem("Second"));
    model.setItem(0, 2, new QStandardItem("Third"));

    QTreeView tree;
    tree.setModel(&model);
    tree.setColumnWidth(0,100);
    tree.setColumnWidth(1,20);
    tree.show();

    return a.exec();
}

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[Midek]

column width is not changed, fist and second columns have same width.

[Midek]

In your example, ti works, in my not. What is the difference?

[Lykurg]

well you use a designer file. In there you probably have set different options for your view...

[fulbay]

Hello,

I have the same problem and I want to know if you have been able to solve your problem. What should the options be set?

Thanks...