Qt5:从控制盘事件中过滤掉水平组件

#include <QtWidgets>

class EventFilter : public QObject
{
    Q_OBJECT
public:
    explicit EventFilter(QObject *parent = nullptr) : QObject(parent) {}

protected:
    bool eventFilter(QObject *obj, QEvent *event) override
    {
        if (event->type() == QEvent::Wheel)
        {
            QWheelEvent *wheelEvent = static_cast<QWheelEvent *>(event);
            if (wheelEvent->orientation() != Qt::Horizontal)
            {
                // 处理垂直滚动事件
                qDebug() << "垂直滚动事件";
                return true; // 返回true表示事件已处理
            }
        }
        return QObject::eventFilter(obj, event);
    }
};

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    QWidget widget;
    widget.installEventFilter(new EventFilter(&widget));
    widget.show();

    return app.exec();
}