How to set last(right) chunk radius of QProgressBar with QSS ?

[joeQ]

As we know, in QTabBar can set firts and last tab QSS, like below QSS:

QTabBar::tab {
    color:blue;
}

/** first and last set color red. */
QTabBar::tab:first {
    color:red;
}

QTabBar::tab:last {
    color:red;
}

my QProgressBar is horizontal, And I want the right(last) chunk has border-top-right-radius and border-bottom-right-radius.

But, It failed:

QProgressBar {
    border: 1px solid gray;
    border-radius: 4px;
    text-align: center;
    height:8px; 
    font-size:1px;
}

QProgressBar::chunk {
    width: 10px;
    /*border-top-right-radius: 4px;*/ // not good
    /*border-bottom-right-radius: 4px;*/
    background-color: rgb(0,65,153);
}

/** failed */
QProgressBar::chunk:last { // or right
    width: 10px;
    border-top-right-radius: 4px;
    border-bottom-right-radius: 4px;
    background-color: rgb(0,65,153);
}

if QSS not, I will try reimplement QProgressBar::paintEvent.

[joeQ]

I save my problem, not use QSS. I reimplement QProgressBar::paintEvent. Share for you.

If someone knows how to use QSS to work it out. can reply me. Thank u.

void ProgressBar::paintEvent(QPaintEvent *event)
{
    QPainter painter(this);
    painter.setRenderHint(QPainter::Antialiasing,true);

    QRect ret = this->rect();

    QPen pen;
    int x,y,w,h;

    w=1;
    pen.setWidth(w);
    pen.setColor(Qt::gray);
    painter.setPen(pen);

    QRect arcRect;
    arcRect = QRect(0,0,ret.height(),ret.height());
    int startAngle = 90 * 16;
    int spanAngle  = 180 * 16;
    painter.drawArc(arcRect,startAngle,spanAngle);

    arcRect = QRect(ret.width()-ret.height(),0,ret.height(),ret.height());
    startAngle = 270 * 16;
    spanAngle  = 180 * 16;
    painter.drawArc(arcRect,startAngle,spanAngle);

    QPoint p1(ret.height()/2,0);
    QPoint p2(ret.width()-ret.height()/2,0);
    painter.drawLine(p1,p2);

    p1 = QPoint(ret.height()/2,ret.height());
    p2 = QPoint(ret.width()-ret.height()/2,ret.height());
    painter.drawLine(p1,p2);

    int len = ret.width()/maximum();
    x = y = 0;
    w = h = ret.height();
   
    QColor col = QColor(0,65,153);
    int val = value();
    for(int i=0; i < val; i++){
        QPainterPath path;
        x = len*i;
        path.addEllipse(x,y,w,h);
        painter.fillPath(path,col);
    }

    painter.fillRect(QRect(h/2,0,x,h),col);
}