QT如何实现左右滑动的按钮
我要实现这样的功能，就想Iphone一样，实现开关按钮，右滑关闭，左滑打开，这样的功能在QT下怎么实现？
望各位大神赐教。
[解决办法]
其实就是2张图片，加2个字符串。

你也可以从QWidget派生自己处理，那样比上面的简单多了。
我帖段代码：

#ifndef SWITCHMENU_H
#define SWITCHMENU_H

#include <QWidget>

class SwitchMenu : public QWidget
{
    Q_OBJECT
public:
    explicit SwitchMenu(QWidget *parent = 0);
    
protected:
    virtual void paintEvent(QPaintEvent *);
    virtual void mousePressEvent(QMouseEvent *);
    virtual void mouseReleaseEvent(QMouseEvent *);

signals:
    
public slots:
    
public:
    void initialize(const QString&, const QString&);

private:
    QPixmap     m_pixmapBk;
    QPixmap     m_pixmapFore;
    bool        m_bOn;

    bool        m_bLBtnDown;
};

#endif // SWITCHMENU_H

#include "switchmenu.h"

#include <QPainter>
#include <QMouseEvent>

SwitchMenu::SwitchMenu(QWidget *parent) :
    QWidget(parent)
{
    setWindowFlags(Qt::FramelessWindowHint);

    m_bOn = false;

    m_bLBtnDown = false;
}

void SwitchMenu::paintEvent(QPaintEvent *)
{
    QPainter painter(this);

    painter.drawPixmap(QPoint(0,0), m_pixmapBk);

    QPoint ptFore;
    if (m_bOn) {
        ptFore = rect().topLeft();
    } else {
        ptFore = QPoint(this->width() - m_pixmapFore.width(),
                        this->rect().top());
    }
    painter.drawPixmap(ptFore, m_pixmapFore);

    QRect rcOn;
    rcOn.setTopLeft(rect().topLeft());
    rcOn.setBottomRight(QPoint(m_pixmapFore.width(), m_pixmapFore.height())); 
 
    painter.drawText(rcOn, Qt::AlignCenter, "ON");

    QRect rcOff;
    rcOff.setTopLeft(QPoint(rect().width() - m_pixmapFore.width(), rect().top()));
    rcOff.setBottomRight(rect().bottomRight());
    painter.drawText(rcOff, Qt::AlignCenter, "Off");
}

void SwitchMenu::mousePressEvent(QMouseEvent *)
{
    m_bLBtnDown = true;
}

void SwitchMenu::mouseReleaseEvent(QMouseEvent *e)
{
    if (m_bLBtnDown) {
        m_bOn = !m_bOn;

        m_bLBtnDown = false;
    }

    update();
}

void SwitchMenu::initialize(const QString& strImageBk, const QString& strImageFore)
{
    m_pixmapBk.load(strImageBk);
    m_pixmapFore.load(strImageFore);

    int nWidth = m_pixmapBk.width();
    int nHeight = m_pixmapBk.height();
    setGeometry(0, 0, m_pixmapBk.width(), m_pixmapBk.height());
}

    SwitchMenu switchMenu;
    switchMenu.initialize(":/res/switchMenu_bk", ":/res/switchMenu_fore");
    switchMenu.show();