QSlider进度条的QSS样式

setStyleSheet("  \
     QSlider::add-page:Horizontal\
     {     \
        background-color: rgb(100, 100, 100);\
        height:4px;\
     }\
     QSlider::sub-page:Horizontal \
    {\
        background-color:qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:0, stop:0 rgba(255,0,0, 255), stop:1 rgba(0,255,0, 255));\
        height:4px;\
     }\
    QSlider::groove:Horizontal \
    {\
        background:transparent;\
        height:6px;\
    }\
    QSlider::handle:Horizontal \
    {\
        height: 30px;\
        width:8px;\
        border-image: url(:/skin/slider-horizon.png);\
        margin: -8 0px; \
    }\
    ");