方法一：可以继承重写一个QSlider

方法二：1.instaneventfiliter(this);slider安装一个事件过滤器

2.在eventfilter(QObject *，QEvent*)中拦截它,很简单吧

例子：

	slider=new QSlider(this); 

	slider->installEventFilter(this);

bool trayIconMenu::eventFilter(QObject *obj, QEvent *event)

{

    if(obj==slider)

    {

        if (event->type()==QEvent::MouseButtonPress)           //判断类型

        {

            QMouseEvent *mouseEvent = static_cast<QMouseEvent *>(event);

            if (mouseEvent->button() == Qt::LeftButton)	//判断左键

            {

               int dur = slider->maximum() - slider->minimum();

               int pos = slider->minimum() + dur * ((double)mouseEvent->x() / slider->width());

               if(pos != slider->sliderPosition())

                {

                  slider->setValue(pos);

                }

            }

        }

    }

    return QObject::eventFilter(obj,event);

}

okay!即可以实现slider点哪里就到哪里

http://blog.csdn.net/what951006/article/details/51507801