如何更改 QComboBox 项目的高度大小? [英] How to change QComboBox items height size?
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问题描述
如何更改 QComboBox 项目的高度大小?
How to change QComboBox items height size?
我只想改变高度 - 我需要更大的高度.
I want change only height - I need it larger.
奇怪的是,没有任何用于此目的的函数.
Its strange that there are no any functions for this purposes.
推荐答案
第一个选项是设置一个新的弹出窗口,例如 QListView 并使用 Qt 样式表更改大小:
A first option is to set a new popup, for example a QListView and change the size using Qt Style Sheet:
#include <QApplication>
#include <QComboBox>
#include <QListView>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QComboBox combo;
QListView *view = new QListView(&combo);
view->setStyleSheet("QListView::item{height: 100px}");
combo.setView(view);
combo.addItems({"A", "B", "C", "D", "E", "F"});
combo.show();
return a.exec();
}
另一个选项是为调整大小的弹出窗口设置一个委托:
Another option is to set a delegate to the popup that resizes:
#include <QApplication>
#include <QComboBox>
#include <QStyledItemDelegate>
#include <QAbstractItemView>
class PopupItemDelegate: public QStyledItemDelegate
{
public:
using QStyledItemDelegate::QStyledItemDelegate;
QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const override
{
QSize s = QStyledItemDelegate::sizeHint(option, index);
s.setHeight(60);
return s;
}
};
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QComboBox combo;
combo.view()->setItemDelegate(new PopupItemDelegate(&combo));
combo.addItems({"A", "B", "C", "D", "E", "F"});
combo.show();
return a.exec();
}
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