QT--QDockWidget 停靠窗口

#include "mainwindow.h"
#include<QDockWidget>
#include<QTextEdit>
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
setWindowTitle(tr("DockWindows")); //设置主窗口的标题栏文字
QTextEdit *te=new QTextEdit(this); //定义一个QTextEdit对象作为主窗口
te->setText(tr("Main Window"));
te->setAlignment(Qt::AlignCenter);
setCentralWidget(te); //将此编辑框设为主窗口的中央窗体
//停靠窗口1
QDockWidget *dock=new QDockWidget(tr("DockWindow1"),this);
dock->setFeatures(QDockWidget::DockWidgetMovable); //可移动
dock->setAllowedAreas(Qt::LeftDockWidgetArea|Qt::RightDockWidgetArea);
QTextEdit *te1 =new QTextEdit();
te1->setText(tr("Window1,The dock widget can be moved between docks by the user" ""));
dock->setWidget(te1);
addDockWidget(Qt::RightDockWidgetArea,dock);
//停靠窗口2
dock=new QDockWidget(tr("DockWindow2"),this);
dock->setFeatures(QDockWidget::DockWidgetClosable|QDockWidget::DockWidgetFloatable); //可关闭、可浮动
QTextEdit *te2 =new QTextEdit();
te2->setText(tr("Window2,The dock widget can be detached from the main window,""and floated as an independent window, and can be closed"));
dock->setWidget(te2);
addDockWidget(Qt::RightDockWidgetArea,dock);
//停靠窗口3
dock=new QDockWidget(tr("DockWindow3"),this);
dock->setFeatures(QDockWidget::AllDockWidgetFeatures); //全部特性
QTextEdit *te3 =new QTextEdit();
te3->setText(tr("Window3,The dock widget can be closed, moved, and floated"));
dock->setWidget(te3);
addDockWidget(Qt::RightDockWidgetArea,dock);
}

MainWindow::~MainWindow()
{

}