Qt/C++ QSlider解决点击不能到该位置问题

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

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