Object::connect: No such signal palettedk::penchanged(&QPen) [复制链接]

QDockWidget *dock=new QDockWidget(tr("调色板"),this);
    dock->setAllowedAreas(Qt::LeftDockWidgetArea|Qt::RightDockWidgetArea);
    palette1=new palettedk(dock);
    dock->setWidget(palette1);
    addDockWidget(Qt::LeftDockWidgetArea,dock);

    connect(palette1,SIGNAL(penchanged(&QPen)),form1,SLOT(penchanged(&QPen)));
    connect(palette1,SIGNAL(brushchanged(&QBrush)),form1,SLOT(brushchanged(&QBrush)));
其中：penchanged(&QPen)),brushchanged(&QBrush)),是在palettedk中定义的两个信号 palettedk是继承:public QWidget

怎么发到这个版里了，换个版吧，多些说明