QTreeWidgetItem内的QComboBox

使用 QTreeWidget::setItemWidget ( QTreeWidgetItem * item, int column, QWidget * widget ) 将组合框放入单元格。

例如,让我们将2列QTreeWidget第二列的所有行都设置为组合框:

QTreeWidgetItemIterator it(ui->treeWidget);
while (*it) {
    QComboBox *comboBox = new QComboBox(this);
    comboBox->addItems(QStringList() << "item1" << "item2");
    ui->treeWidget->setItemWidget(*it, 1, comboBox);
    ++it;
}

我们的示例小部件现在如下所示:

#ifndef COMBOBOXITEM_H
#define COMBOBOXITEM_H

#include 

class ComboBoxItem : public QComboBox
{
    Q_OBJECT

private:
    QTreeWidgetItem *item;
    int column;

public:
    ComboBoxItem(QTreeWidgetItem*, int);

public slots:
    void changeItem(int);

};

ComboBoxItem::ComboBoxItem(QTreeWidgetItem *item, int column)
{
    this->item = item;
    this->column = column;
    connect(this, SIGNAL(currentIndexChanged(int)), SLOT(changeItem(int)));
}

void ComboBoxItem::changeItem(int index)
{
    if(index >=0)
    {
        item->setData(this->column, Qt::UserRole, this->itemText(index));
        qDebug() item->data(this->column, Qt::UserRole).toString();
    }
}

#include "moc_ComboBoxItem.cpp"

#endif // COMBOBOXITEM_H

////// Sample implementation..

lst = new QTreeWidget;
// Snip
QTreeWidgetItem *itm = new QTreeWidgetItem;
// Snip
ComboBoxItem *cmb = new ComboBoxItem(itm, 1);
cmb->addItem("One");
cmb->addItem("Two");
cmb->addItem("Three");
cmb->addItem("Four");
lst->setItemWidget(itm, 1, cmb);

我希望这能帮助那些需要QTreeWidgetItem中的QComboBox的人!

使用

setItemWidget(QTreeWidgetItem(),列,QWidget())

tree = QTreeWidget()

cmb = QComboBox()
cmb.addItem("Item1", 'value1')
cmb.addItem("Item2", 'value2')
cmb.addItem("Item3", 'value3')

item = QTreeWidgetItem(tree.invisibleRootItem())
column = 0
item.setData(column, Qt.EditRole, 'NameYouWant')
column += 1
tree.setItemWidget(item, column , cmb)

下面是另一个方法的小补丁。我发现is使用数据来更新框,而我对方法的setText updater做了一些小更改。

#ifndef COMBOBOXITEM_H
#define COMBOBOXITEM_H

#include <QtGui>

class ComboBoxItem : public QComboBox
{
    Q_OBJECT

private:
    QTreeWidgetItem *item;
    int column;

public:
    ComboBoxItem(QTreeWidgetItem*, int);

public slots:
    void changeItem(int);

};

ComboBoxItem::ComboBoxItem(QTreeWidgetItem *item, int column)
{
    this->item = item;
    this->column = column;
    connect(this, SIGNAL(currentIndexChanged(int)), SLOT(changeItem(int)));
}

void ComboBoxItem::changeItem(int index)
{
    if(index >=0)
    {
        this->item->setText(this->column, this->currentText());

    }
}

#include "moc_ComboBoxItem.cpp"



#endif // COMBOBOXITEM_H

////// Sample implementation..

lst = new QTreeWidget;
// Snip
QTreeWidgetItem *itm = new QTreeWidgetItem;
// Snip
ComboBoxItem *cmb = new ComboBoxItem(itm, 1);
cmb->addItem("One");
cmb->addItem("Two");
cmb->addItem("Three");
cmb->addItem("Four");
lst->setItemWidget(itm, 1, cmb);

这是最简单的方法:

QComboBox *cb = new QComboBox(this);
QStringList cbTexts;
cbTexts << tr("First") << tr("Second") << tr("Third");
cb->addItems(cbTexts);

QTreeWidgetItem *item = new QTreeWidgetItem(ui->treeWidget);
ui->treeWidget->addTopLevelItem(item);
ui->treeWidget->setItemWidget(item, [colum here], cb);
for (int col = 0; col < [num colums]; ++col) ui->treeWidget->resizeColumnToContents(col);