QSlider实现点击就滑块就到相应的位置上

重新实现mousePressEvent即可

/**********************
 ** imslider.h
**********************/

#ifndef IMSLIDER_H
#define IMSLIDER_H
#include
class QSlider;

class ImSlider : public QSlider
{
 Q_OBJECT

public:
 ImSlider(QWidget * parent = 0 );
 ~ImSlider(){;}
 virtual bool eventFilter ( QObject *watched, QEvent *event );

protected:
 virtual void mousePressEvent ( QMouseEvent * event ) ;
};
#endif

/**********************
 ** imslider.cpp

**********************/
#include
#include "imslider.h"

ImSlider::ImSlider( QWidget * parent)
:QSlider(parent)
{
 
}

void ImSlider::mousePressEvent ( QMouseEvent * mouseEvent )
{
 if(mouseEvent->button()==Qt::LeftButton && isEnabled())
 {
  int duration = maximum() - minimum();
  int pos = minimum() + duration * ((double)mouseEvent->x() / width());
  if(pos != sliderPosition())
  {
   setValue(pos);     
  }
  // else ok.
 }
}