将QPolygon转换为QPushbutton

#include <QtWidgets>

class PolygonButton : public QPushButton {
public:
    PolygonButton(QWidget *parent = nullptr)
        : QPushButton(parent) {
        setFixedSize(200, 200);
        setText("Polygon Button");
    }

protected:
    void paintEvent(QPaintEvent *event) override {
        QPushButton::paintEvent(event);

        QPainter painter(this);
        QPolygon polygon;
        polygon << QPoint(50, 50) << QPoint(150, 50) << QPoint(150, 150) << QPoint(50, 150);

        QPainterPath path;
        path.addPolygon(polygon);
        painter.fillPath(path, QColor(255, 0, 0));
    }

    void mousePressEvent(QMouseEvent *event) override {
        if (event->button() == Qt::LeftButton) {
            QPoint pos = event->pos();

            QPolygon polygon;
            polygon << QPoint(50, 50) << QPoint(150, 50) << QPoint(150, 150) << QPoint(50, 150);

            if (polygon.containsPoint(pos, Qt::OddEvenFill)) {
                qDebug() << "Polygon button clicked";
            }
        }

        QPushButton::mousePressEvent(event);
    }
};

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

    PolygonButton button;
    button.show();

    return app.exec();
}