是否有类似于(PyQT)的东西
QTreeWidgetItem.setCheckState(0, Qt.Checked)
但对于组合框?
我在引用中看不到任何内容,那么如何将自定义QComboBox作为QTreeWidgetItem中的一个元素插入?
答案 0 :(得分:22)
使用QTreeWidget::setItemWidget ( QTreeWidgetItem * item, int column, QWidget * widget )将组合框放入单元格中。
例如,让我们将2列QTreeWidget的第二列的所有行都设为组合框:
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看起来像这样:
答案 1 :(得分:12)
我知道这是一个老问题,但我认为我有一个更彻底的答案。要从QComboBox中获取任何功能,您可能需要对其进行子类化。这是我提出的解决方案:
#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);
我希望在QTreeWidgetItem中帮助需要QComboBox的人!
答案 2 :(得分:1)
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);
答案 3 :(得分:0)
这是另一种海报方法的小修复。我发现使用Data来更新框我怎么对方法的setText更新程序做了一些小改动。
#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);
答案 4 :(得分:0)
使用
setItemWidget(QTreeWidgetItem(),column,QWidget())
。将QComboBox()添加为参数,因为它继承了QWidget(),因此它是兼容的。
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)