QcomboBox item style

最新推荐文章于 2025-06-14 22:49:04 发布

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本文介绍如何使用Qt自定义ComboBox的下拉列表样式，通过创建ListView对象并设置样式表来实现。示例代码展示了如何为ComboBox的每个项设置边框和选中状态样式。

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The solution is to

create a ListView object
set its stylesheet
use it as the view of the ComboBox

Here is how:

    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;
    }

Remark: I think, according to the Qt docs applying this style should also work...but it does not.

QComboBox QAbstractItemView::item {
    border-bottom: 5px solid white; margin:3px;
}
QComboBox QAbstractItemView::item:selected {
    border-bottom: 5px solid black; margin:3px;
}