QprogressBar Style Sheets: double linear gradient

QProgressBar::chunk {background: qlineargradient(x1: 0, y1: 0.5, x2: 1, y2: 0.5, stop: 0 #C71585, stop: 1 white)

void myProgressBar::paintEvent( *pe)
{
    Q_UNUSED(pe);
 
     pb_rect = this->geometry();
     pb_color;
     m_shadow;
     gradcolorH1;
     gradcolorH2;
    int value;
    int max;
 
    int margin = 0;
 
    int altezza_nor;
    max = this->maximum();
    value = this->value();
    altezza_nor = (value*pb_rect.height())/max;
 
     painter(this);
 
    painter.setRenderHint(::Antialiasing);
 
    m_shadow = (19, 79, 236);
    pb_color = (139, 213, 252);
    gradcolorH1 = m_shadow;
    gradcolorH2 = pb_color;
 
    //outline
    painter.setPen(((Qt::black), pb_rect.width()));
     outline;
    outline.addRoundRect(0, 0, pb_rect.width(), pb_rect.height(), 0, 0);
    painter.setOpacity(1);
    painter.drawPath(outline);
 
 
    // gradient
     gradient(margin, pb_rect.height() - altezza_nor + margin, pb_rect.width() - margin, pb_rect.height() -margin);
    gradient.setColorAt(0.0, pb_color);
    gradient.setColorAt(1.0, m_shadow);
 
     brush(gradient);
    painter.setBrush(brush);
    painter.setPen(((pb_color), 5.0));
 
     painter.setOpacity(1);
     painter.drawRoundRect(margin, pb_rect.height() - altezza_nor + margin, pb_rect.width() - margin, pb_rect.height() -margin,0,0);//pb_rect.height() - 2, 0, 0);
 
 
     // gradient
     gradientH(0, (pb_rect.height() - altezza_nor)/2, pb_rect.width(), (pb_rect.height() - altezza_nor)/2);
 
    gradientH.setColorAt(0.0, gradcolorH1);
    gradientH.setColorAt(0.2, gradcolorH2);
    gradientH.setColorAt(0.8, gradcolorH2);
    gradientH.setColorAt(1.0, gradcolorH1);
     brushH(gradientH);
    painter.setBrush(brushH);
    painter.setOpacity(0.3);
    painter.drawRoundRect(margin, pb_rect.height() - altezza_nor, pb_rect.width() - margin, pb_rect.height() -margin,0,0);//pb_rect.height() - 2, 0, 0);
}