如何在Qt中为QComboBox添加图标？

Question

我想在Qt的QComboBox中添加一个带文本的图标，我该如何实现它？

Answer 1

You can use the following APIs:

void QComboBox::insertItem ( int index, const QString & text, const QVariant & userData = QVariant() )
void QComboBox::setItemIcon ( int index, const QIcon & icon )

http://doc.qt.io/qt-5/qcombobox.html#insertItem
http://doc.qt.io/qt-5/qcombobox.html#setItemIcon

As for the code snippet it's as easy as this:

void AddItem(QComboBox* combo, QString itemName, QIcon* icon)
{
    combo->insertItem(0, itemName);
    combo->setItemIcon(0, *icon);
}

Answer 2

You can simply do (Qt5), for example:

   QIcon icon = QIcon::fromTheme("edit-undo");
   QString label = "foo";
   combo->addItem( icon, label );