17QDockWidget* AddDockWidget(QMainWindow *mw, QWidget *widget, 
const QString &strtitle, Qt::DockWidgetAreas allowed = Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea, Qt::DockWidgetArea add_where = Qt::LeftDockWidgetArea, 
bool closable = 
true, 
bool delete_on_close = 
true);