QDockWidget用法

 QDockWidget * dok = new QDockWidget;    dok->setFeatures(QDockWidget::AllDockWidgetFeatures); //指定停靠窗体的样式，此处为可移动AllDockWidgetFeatures    dok->setAllowedAreas(Qt::AllDockWidgetAreas);    chatwindow * dokwind = new chatwindow("dok");    dok->setWidget(dokwind);    w.addDockWidget(Qt::RightDockWidgetArea,dok);    dok = new QDockWidget;    dok->setFeatures(QDockWidget::AllDockWidgetFeatures); //指定停靠窗体的样式，此处为可移动AllDockWidgetFeatures    dok->setAllowedAreas(Qt::AllDockWidgetAreas);    dokwind = new chatwindow("dok");    dok->setWidget(dokwind);    w.addDockWidget(Qt::RightDockWidgetArea,dok);