如何停靠弹出窗口？

Question

我有一个应用程序，有3个主要的部件。我也有一个弹出式的QDockWidget。我试图让QDockWidget停靠在底部窗口小部件的右半部分，但正如您在下图中看到的那样，我可以停靠窗口的唯一位置位于应用程序的边缘。我怎样才能使QDockWidget窗口占据底部小部件的右半部分？

此外，有没有办法有一个QDockWidget是已经停靠在打开的应用程序，而不必在其自己的窗口单独打开？

编辑：使用@下面Bertrand的答案，这里是我结束了做：

mainwindow.h

#ifndef MAINWINDOW_H 
#define MAINWINDOW_H 

#include <QMainWindow> 

namespace Ui { 
class MainWindow; 
} 

class MainWindow : public QMainWindow 
{ 
    Q_OBJECT 

public: 
    explicit MainWindow(QWidget *parent = 0); 
    ~MainWindow(); 


private: 
    Ui::MainWindow *ui; 
    void on_actionRestore_layout_triggered(); 
    QMainWindow* m_rightSideWindow; 
    QDockWidget* m_dockWidget1; 
    QDockWidget* m_dockWidget2; 
    QDockWidget* m_dockWidget3; 
}; 

#endif // MAINWINDOW_H 

mainwindow.cpp

#include "mainwindow.h" 
#include "ui_mainwindow.h" 

#include <QtWidgets> 

MainWindow::MainWindow(QWidget *parent) : 
    QMainWindow(parent), 
    ui(new Ui::MainWindow), 
    m_rightSideWindow(NULL), 
    m_dockWidget1(NULL), 
    m_dockWidget2(NULL), 
    m_dockWidget3(NULL) 
{ 
    ui->setupUi(this); 
    QSplitter *splitter = new QSplitter(this); 
     splitter->setOrientation(Qt::Horizontal); 
     QTreeView* leftSideWidget = new QTreeView(this); 

     m_rightSideWindow = new QMainWindow(this); 
     m_rightSideWindow->setWindowFlags(Qt::Widget); 
     m_rightSideWindow->layout()->setContentsMargins(3, 3, 3, 3); 

     splitter->addWidget(leftSideWidget); 
     splitter->addWidget(m_rightSideWindow); 

     m_dockWidget1 = new QDockWidget("Dock 1", this); 
     m_rightSideWindow->addDockWidget(Qt::TopDockWidgetArea, m_dockWidget1); 
     m_dockWidget1->setTitleBarWidget(new QWidget()); // remove title bar 
     m_dockWidget1->setAllowedAreas(Qt::NoDockWidgetArea); // do not allow to dock 
     QTextEdit* textEdit1 = new QTextEdit(this); // put any QWidget derived class inside 
     m_dockWidget1->setWidget(textEdit1); 

     m_dockWidget2 = new QDockWidget("Dock 2", this); 
     m_rightSideWindow->addDockWidget(Qt::BottomDockWidgetArea, m_dockWidget2); 
     m_dockWidget2->setTitleBarWidget(new QWidget()); 
     m_dockWidget2->setAllowedAreas(Qt::NoDockWidgetArea); 
     QTextEdit* textEdit2 = new QTextEdit(this); 
     m_dockWidget2->setWidget(textEdit2); 

     m_dockWidget3 = new QDockWidget("Dock 3", this); 
     m_rightSideWindow->addDockWidget(Qt::BottomDockWidgetArea, m_dockWidget3); 
     QTextEdit* textEdit3 = new QTextEdit(this); 
     m_dockWidget3->setWidget(textEdit3); 

     setCentralWidget(splitter); 
} 

MainWindow::~MainWindow() 
{ 
    delete ui; 
} 

void MainWindow::on_actionRestore_layout_triggered() 
{ 
    QList<QDockWidget*> list = findChildren<QDockWidget*>(); 
    foreach(QDockWidget* dock, list) 
    { 
     if(dock->isFloating()) 
      dock->setFloating(false); 
     m_rightSideWindow->removeDockWidget(dock); 
     if (dock == m_dockWidget1) 
      m_rightSideWindow->addDockWidget(Qt::TopDockWidgetArea, m_dockWidget1); 
     else 
      m_rightSideWindow->addDockWidget(Qt::BottomDockWidgetArea, dock); 
     dock->setVisible(true); 
    } 
    m_rightSideWindow->splitDockWidget(m_dockWidget2, m_dockWidget3, Qt::Horizontal); 
} 

Answer 1

你可以将QDockWidget停靠在QMainWindow或其他Q上DockWidget。

，以获得所需的布局嵌入您的主窗口的右侧子的QMainWindow，并把它作为与setWindowFlags一个QWidget（QT ::小部件）：

#include "mainwindow.h" 
#include "ui_mainwindow.h" 

#include <QtWidgets> 

MainWindow::MainWindow(QWidget *parent) : 
    QMainWindow(parent), 
    ui(new Ui::MainWindow) 
{ 
    ui->setupUi(this); 
    QSplitter *splitter = new QSplitter(this); 
    splitter->setOrientation(Qt::Horizontal); 
    QTreeView* leftSideWidget = new QTreeView(this); 

    m_rightSideWindow = new QMainWindow(this); 
    m_rightSideWindow->setWindowFlags(Qt::Widget); 
    m_rightSideWindow->layout()->setContentsMargins(3, 3, 3, 3); 

    splitter->addWidget(leftSideWidget); 
    splitter->addWidget(m_rightSideWindow); 

    m_dockWidget1 = new QDockWidget("Dock 1", this); 
    m_rightSideWindow->addDockWidget(Qt::TopDockWidgetArea, m_dockWidget1); 
    m_dockWidget1->setTitleBarWidget(new QWidget()); // remove title bar 
    m_dockWidget1->setAllowedAreas(Qt::NoDockWidgetArea); // do not allow to dock 
    QTextEdit* textEdit1 = new QTextEdit(this); // put any QWidget derived class inside 
    m_dockWidget1->setWidget(textEdit1); 

    m_dockWidget2 = new QDockWidget("Dock 2", this); 
    m_rightSideWindow->addDockWidget(Qt::BottomDockWidgetArea, m_dockWidget2); 
    m_dockWidget2->setTitleBarWidget(new QWidget()); 
    m_dockWidget2->setAllowedAreas(Qt::NoDockWidgetArea); 
    QTextEdit* textEdit2 = new QTextEdit(this); 
    m_dockWidget2->setWidget(textEdit2); 

    m_dockWidget3 = new QDockWidget("Dock 3", this); 
    m_rightSideWindow->addDockWidget(Qt::BottomDockWidgetArea, m_dockWidget3); 
    QTextEdit* textEdit3 = new QTextEdit(this); 
    m_dockWidget3->setWidget(textEdit3); 

    setCentralWidget(splitter); 

} 
MainWindow::~MainWindow() 
{ 
    delete ui; 
} 
void MainWindow::on_actionRestore_layout_triggered() 
{ 
    QList<QDockWidget*> list = findChildren<QDockWidget*>(); 
    foreach(QDockWidget* dock, list) 
    { 
     if(dock->isFloating()) 
      dock->setFloating(false); 
     m_rightSideWindow->removeDockWidget(dock); 
     if (dock == m_dockWidget1) 
      m_rightSideWindow->addDockWidget(Qt::TopDockWidgetArea, m_dockWidget1); 
     else 
      m_rightSideWindow->addDockWidget(Qt::BottomDockWidgetArea, dock); 
     dock->setVisible(true); 
    } 
    m_rightSideWindow->splitDockWidget(m_dockWidget2, m_dockWidget3, Qt::Horizontal); 
}