是否可以设置QComboBox下拉列表中所选项的样式(Qt样式表)?
解决方法是:
操作步骤如下:
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QMainWindow * mainWindow = new QMainWindow();
QComboBox * combo = new QComboBox(mainWindow);
QListView * listView = new QListView(combo);
combo->addItem("foo");
combo->addItem("bar");
combo->addItem("foobar");
combo->addItem("fooooo");
listView->setStyleSheet("QListView::item { \
border-bottom: 5px solid white; margin:3px; } \
QListView::item:selected { \
border-bottom: 5px solid black; margin:3px; \
color: black; \
} \
");
combo->setView(listView);
mainWindow->show();
app.exec();
return 0;
}
备注: 我认为,根据Qt文档的说法,应该可以使用这种样式...但实际上并不能。
QComboBox QAbstractItemView::item {
border-bottom: 5px solid white; margin:3px;
}
QComboBox QAbstractItemView::item:selected {
border-bottom: 5px solid black; margin:3px;
}
QAbstractItemView
进行样式设置。#include <QtGui>
int main(int argc, char **argv) {
QApplication app(argc, argv);
QComboBox cb;
cb.addItem("Item 1");
cb.addItem("Item 2");
cb.addItem("Item 3");
cb.show();
QPalette p = cb.palette();
p.setColor(QPalette::HighlightedText, QColor(Qt::red));
p.setColor(QPalette::Highlight, QColor(Qt::green));
cb.setPalette(p);
// OR ...
// cb.setStyleSheet("QComboBox QAbstractItemView { "
// "selection-background-color: green; "
// "selection-color: red; }");
return app.exec();
}
class MyDelegate : public QStyledItemDelegate
{
protected:
void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const override
{
if (option.state & QStyle::State_HasFocus){
QStyleOptionViewItem my_option = option;
my_option.state = my_option.state ^ QStyle::State_HasFocus;
QStyledItemDelegate::paint(painter, my_option, index);
return;
}
QStyledItemDelegate::paint(painter, option, index);
}
};
然后在你的ComboBox中使用你的代理:
QStyledItemDelegate* itemDelegate = new MyDelegate();
combobox->setItemDelegate(itemDelegate);
这样就消除了选定项目周围的难看边框。