how to add icons to QTreeWidget?

[wei243]

i manage to draw a treeview with QTreeWidget using QAbstractItemMode.
i would like to ask for coding to add icons n display in QTreeWidget..

QTreeWidget *nav = new QTreeWidget;
	nav->QTreeView::setModel(model);
	nav->QTreeView::setAnimated(true);

QTreeWidget *nav = new QTreeWidget;
	nav->QTreeView::setModel(model);
	nav->QTreeView::setAnimated(true);

To copy to clipboard, switch view to plain text mode 

[jpn]

Do not use an external model with QTreeWidget. QTreeWidget has a built-in model, which explains why QTreeWidget::setModel() has been made private. You are supposed to use QTreeWidgetItems to fill a QTreeWidget. QTreeWidgetItem has a method setIcon().

If you want to use a model, use QTreeView instead (and forget about QTreeWidgetItems). Then make your model's data() return icons for Qt::DecorationRole.

[wei243]

If you want to use a model, use QTreeView instead (and forget about QTreeWidgetItems). Then make your model's data() return icons for Qt:ecorationRole.

thx jpn. i change from QTreeWidget to QTreeView...
actually i program base on the 'Simple Tree Model' which is using QTreeView provided in qt example.
but i m new in qt4, got any example coding of it?

[sabeesh]

hi

please try like this.....

QTreeWidget Tree;
QTreeWidgetItem *item ;
item = new QTreeWidgetItem(Tree);
item->setText( 0, country );
item->setIcon(0,QIcon("your icon path or file name "));

item->setExpanded( true );

[jpn]

QVariant YourModel::data(const QModelIndex &index, int role) const
{
    ...
    switch (role)
    {
        ...
        case Qt::DecorationRole: // <---
            return QIcon(...); // <---
        ...
    }
    ...
}

QVariant YourModel::data(const QModelIndex &index, int role) const
{
    ...
    switch (role)
    {
        ...
        case Qt::DecorationRole: // <---
            return QIcon(...); // <---
        ...
    }
    ...
}

To copy to clipboard, switch view to plain text mode