Qt：停靠窗口QDockWidget类

比眉伴天荒 2023-01-12 11:41 113阅读 0赞

Qt之停靠窗口QDockWidget类  
设置停靠窗口的一般流程  
1、创建一个QDockWidget对象的停靠窗口  
2、设置此停靠窗体的属性，通常调用setFeatures()以及setAllowAreas()两种方法  
3、新建一个要插入停靠窗口的控件，常用的有QListWidget和QTextEdit  
4、将控件插入停靠窗口，调用QDockWidget的setWidget()方法  
5、使用addDockWidget方法在MainWindow中加入此停靠窗口

步骤：  
1、新建Qt GUI应用，项目名称DockWindows，基类选择"QMainWindow"，类名选择"DockWindows"，取消"创建界面"  
2、修改DockWindows.h，DockWindows.cpp文件，在构造函数中实现窗口的初始化以及功能实现

DockWindows.h

#ifndef DOCKWINDOWS_H
    #define DOCKWINDOWS_H
    
    #include <QMainWindow>
    
    
    class DockWindows : public QMainWindow
    {
        Q_OBJECT
    
    public:
        explicit DockWindows(QWidget *parent = 0);
        ~DockWindows();
    
    };
    
    #endif // DOCKWINDOWS_H

DockWindows.cpp

#include "dockwindows.h"
    #include "ui_dockwindows.h"
    #include<QTextEdit>
    #include<QDockWidget>
    
    DockWindows::DockWindows(QWidget *parent) :
        QMainWindow(parent)
    {
        setWindowTitle(tr("windows"));  //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);
        //可以在主窗口的左/右边停靠
        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
        //  QDockWidget::NoDockWidgetFeatures   //不可以关闭，不可以移动，不可以浮动
        dock->setAllowedAreas(Qt::TopDockWidgetArea | Qt::BottomDockWidgetArea);
        //顶端停靠，底部停靠
        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);
    }
    
    DockWindows::~DockWindows()
    {
    
    }

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[76b376fd97751eb31b76137052341d0fb87.jpg]: /images/20221119/e6b4425568c1498aaf5bec2e630d685e.png