C++ 设置具有多列的QComboBox文本
我有一个包含QTableView的QComboBox，如下所示。当我选择一行时，QComboBox标题只显示“Alex”，但我想要“Alex-Alex地址”。我怎么做？ 谢谢C++ 设置具有多列的QComboBox文本,c++,qt,qtableview,qcombobox,C++,Qt,Qtableview,Qcombobox,我有一个包含QTableView的QComboBox，如下所示。当我选择一行时，QComboBox标题只显示“Alex”，但我想要“Alex-Alex地址”。我怎么做？ 谢谢 假设您有一个表，您可以将att“选择行为”设置为选择行 ： 您是否尝试过将信号QCOMBOX:：currentIndexChanged（int index）与QCOMBOX:：setEditText（）结合使用？如果editable为false，我不太确定这是否也能正常工作，但可能值得检查一下 OP要求回答，因为这似乎很有
假设您有一个表，您可以将att“选择行为”设置为
选择行// standard C++ header:
#include <string>
#include <vector>
// Qt header:
#include <QtWidgets>
// table data entry
struct Entry {
int i;
std::string name;
std::string address;
};
// custom table model
class TableModel: public QAbstractTableModel {
private:
std::vector<Entry> _entries;
public:
explicit TableModel(QObject *pQParent = nullptr):
QAbstractTableModel(pQParent)
{ }
template <typename ITER>
TableModel(ITER first, ITER last, QObject *pQParent = nullptr) :
TableModel(pQParent)
{
for (; first != last; ++first) _entries.push_back(*first);
}
virtual ~TableModel() = default;
TableModel(const TableModel&) = delete;
TableModel& operator=(const TableModel&) = delete;
virtual int rowCount(const QModelIndex &parent = QModelIndex()) const override
{
return (int)_entries.size();
}
virtual int columnCount(const QModelIndex &parent = QModelIndex()) const override
{
return 3;
}
virtual QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override
{
const size_t i = (size_t)index.row();
if (i >= _entries.size()) return QVariant();
if (role == Qt::DisplayRole) {
switch (index.column()) {
case 0: return _entries[i].i;
case 1: return QString::fromStdString(_entries[i].name);
case 2: return QString::fromStdString(_entries[i].address);
}
}
return QVariant();
}
};
// sample data
const Entry entries[] = {
{ 1, "Alex", "Alex address" },
{ 5, "Ben", "Ben address" },
{ 6, "Mary", "Mary address" },
{ 2, "Max", "Max address" },
{ 4, "Nicole", "Nicole address" },
{ 3, "Tim", "Tim address" }
};
// main application
int main(int argc, char **argv)
{
qDebug() << "Qt Version:" << QT_VERSION_STR;
QApplication app(argc, argv);
// setup GUI
TableModel qTblModel(std::begin(entries), std::end(entries));
QComboBox qCBox;
qCBox.setWindowTitle("Test QComboBox with Table Model");
QTableView qTblView(&qCBox);
qTblView.setModel(&qTblModel);
qTblView.horizontalHeader()->hide();
qTblView.verticalHeader()->hide();
qTblView.resizeColumnsToContents();
qTblView.setSelectionBehavior(QTableView::SelectRows);
qCBox.setView(&qTblView);
qCBox.setModel(&qTblModel);
qCBox.setEditable(true); // allow access to line edit
qCBox.lineEdit()->setReadOnly(true); // prevent editing in line edit
qCBox.show();
// install signal handlers
QObject::connect(&qCBox, QOverload<int>::of(&QComboBox::currentIndexChanged),
[&](int i) {
if ((size_t)i < std::size(entries)) {
qCBox.setEditText(
QString::fromStdString(entries[i].name + " | " + entries[i].address));
}
});
qCBox.setCurrentIndex(-1);
// runtime loop
return app.exec();
}
QComboBox:：editabletrueQComboBox:：setEditText（）为了防止意外的用户编辑，我将嵌入的
QLineEditreadOnlyfalse