QStandardItemModel + QStandardItem
QListWidget + QListWidgetItem
Model/View + QItemDelegate
当然,还有其它更好的方式,这里就不再过多介绍了,下面介绍一种比较简单的:
QListWidget + QListWidgetItem + QCheckBox
pListWidget = new QListWidget(this);
pLineEdit = new QLineEdit(this);
for (int i = 0; i < 5; ++i)
QListWidgetItem *pItem = new QListWidgetItem(pListWidget);
pListWidget->addItem(pItem);
pItem->setData(Qt::UserRole, i);
QCheckBox *pCheckBox = new QCheckBox(this);
pCheckBox->setText(QStringLiteral("Qter%1").arg(i));
pListWidget->addItem(pItem);
pListWidget->setItemWidget(pItem, pCheckBox);
connect(pCheckBox, SIGNAL(stateChanged(int)), this, SLOT(stateChanged(int)));
ui.comboBox->setModel(pListWidget->model());
ui.comboBox->setView(pListWidget);
ui.comboBox->setLineEdit(pLineEdit);
pLineEdit->setReadOnly(true); //ui.comboBox->setEditable(true);
connect(pLineEdit, SIGNAL(textChanged(const QString &)), this, SLOT(textChanged(const QString &)));
void MultiComboBox::stateChanged(int state)
bSelected = true;
QString strSelectedData("");
strSelectedText.clear();
QObject *object = QObject::sender();
QCheckBox *pSenderCheckBox = static_cast(object);
int nCount = pListWidget->count();
for (int i = 0; i < nCount; ++i)
QListWidgetItem *pItem = pListWidget->item(i);
QWidget *pWidget = pListWidget->itemWidget(pItem);
QCheckBox *pCheckBox = (QCheckBox *)pWidget;
if (pCheckBox->isChecked())
QString strText = pCheckBox->text();
strSelectedData.append(strText).append(";");
//所点击的复选框
if (pSenderCheckBox == pCheckBox)
int nData = pItem->data(Qt::UserRole).toInt();
qDebug() << QString("I am sender...id : %1").arg(nData);
if (strSelectedData.endsWith(";"))
strSelectedData.remove(strSelectedData.count() - 1, 1);
if (!strSelectedData.isEmpty())
//ui.comboBox->setEditText(strSelectedData);
strSelectedText = strSelectedData;
pLineEdit->setText(strSelectedData);
pLineEdit->setToolTip(strSelectedData);
pLineEdit->clear();
//ui.comboBox->setEditText("");
bSelected = false;
void MultiComboBox::textChanged(const QString &text)
if (!bSelected)
pLineEdit->setText(strSelectedText);
当点击的复选框状态改变时候,会发送stateChanged信号,槽中通过sender来获取信号的发送者,然后可以获取所需要的数据(比如:可以通过setData保存一些自定义的数据),遍历所有的复选框,获取选中项的数据进行显示。
中间遇到一个小问题,当点击空白处,下来列表会进行收回,此时QLineEdit的数据将会被自动清空,所以此处判断QLineEdit的textChanged来进行恢复。
转载自:╰☆一去❤二三里`
另外关于QCOmbobox的扩展,请点击:QCompleter自动补全、Qt之QComboBox(基本应用、代理设置)