使QLabel可点击

class ClickableLabel : public QLabel
{
    Q_OBJECT

public:
    explicit ClickableLabel(QWidget* parent = nullptr);
    ~ClickableLabel();

signals:
    void clicked();

protected:
    void mousePressEvent(QMouseEvent* event);
};

ClickableLabel::ClickableLabel(QWidget* parent)
    : QLabel(parent)
{
    connect(this, &ClickableLabel::clicked, this, &ClickableLabel::handleClick);
}

void ClickableLabel::mousePressEvent(QMouseEvent* event)
{
    Q_UNUSED(event);
    emit clicked();
}

void ClickableLabel::handleClick()
{
    // 处理点击事件的逻辑
}

ClickableLabel* label = new ClickableLabel(this);
connect(label, &ClickableLabel::clicked, this, &MyClass::labelClicked);