QDockWidget类使用

#include <QMainWindow>

class QTextEdit;
class QDockWidget;

class DockWindow : public QMainWindow
{
    Q_OBJECT

public:
    DockWindow(QWidget *parent = 0);
    ~DockWindow();

private:
    QTextEdit *text1;
    QTextEdit *text2;
    QTextEdit *text3;
    QTextEdit *text4;
    QDockWidget *dock;
    QDockWidget *dock2;
    QDockWidget *dock3;
};

#endif // DOCKWINDOW_H
           

#include "dockwindow.h"
#include <QTextEdit>
#include <QDockWidget>

DockWindow::DockWindow(QWidget *parent)
    : QMainWindow(parent)
{
    setWindowTitle(QObject::tr("DockWindows"));
    text1 = new QTextEdit(this);
    text1->setText(QObject::tr("Main Window"));
    text1->setAlignment(Qt::AlignCenter);
    setCentralWidget(text1);

    dock = new QDockWidget(QObject::tr("DockWindow1"), this);
    dock->setFeatures(QDockWidget::DockWidgetMovable);
    dock->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea);

    text2 = new QTextEdit();
    text2->setText(tr("Window1, The dock widget can be moved between docks by the user" ""));
    dock->setWidget(text2);
    addDockWidget(Qt::RightDockWidgetArea, dock);

    dock2 = new QDockWidget(tr("DockWindow2"), this);
    dock2->setFeatures(QDockWidget::DockWidgetClosable | QDockWidget::DockWidgetFloatable);
    text3 = new QTextEdit;
    text3->setText(tr("Window2, The dock widget can be detached from the main window,"
                      "and floated as an independent window, and can be closed"));
    dock2->setWidget(text3);
    addDockWidget(Qt::RightDockWidgetArea, dock2);

    dock3 = new QDockWidget(tr("DockWindow3"), this);
    dock3->setFeatures(QDockWidget::AllDockWidgetFeatures);
    text4 = new QTextEdit;
    text4->setText(tr("Window3, The dock widget can be closed, moved, and floated"));
    dock3->setWidget(text4);
    addDockWidget(Qt::RightDockWidgetArea, dock3);
}

DockWindow::~DockWindow()
{
    if (text1) delete text1;
    if (text2) delete text2;
    if (text3) delete text3;
    if (text4) delete text4;
    if (dock) delete dock;
    if (dock2) delete dock2;
    if (dock3) delete dock3;
}
           

输出结果