一.第一阶段

运行结果(GIF动图)：

day11.pro

QT       += core guigreaterThan(QT_MAJOR_VERSION, 4): QT += widgetsCONFIG += c++11# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0SOURCES += \main.cpp \mainwindow.cppHEADERS += \mainwindow.h# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H#include <QMainWindow>class MainWindow : public QMainWindow
{Q_OBJECTpublic:MainWindow(QWidget *parent = nullptr);~MainWindow();
public slots:void saveSLot();
};
#endif // MAINWINDOW_H

mainwindow.cpp

#include "mainwindow.h"
#include<QMenuBar>
#include<QDebug>
MainWindow::MainWindow(QWidget *parent): QMainWindow(parent)
{this->resize(640,480);QMenuBar* menuBar=this->menuBar();QMenu* fileMenu = new QMenu("文件(&F)",menuBar);//这里设置Alt+F是该按钮的快捷键fileMenu->addAction("default")->setCheckable(true);//是否可对勾点选fileMenu->addSeparator();//添加一个分隔线fileMenu->addAction(QIcon("C:/Users/xiaowen/Pictures/boy.png"),"打开");fileMenu->addAction(QIcon("C:/Users/xiaowen/Pictures/boy.png"),"关闭",this,SLOT(close()));fileMenu->addAction(QIcon("C:/Users/xiaowen/Pictures/boy.png"),"保存",this,SLOT(saveSlot()),QKeySequence("Ctrl+s"));fileMenu->addMenu("子菜单")->addAction("default");menuBar->addMenu(fileMenu);menuBar->addMenu("帮助(&H)");
}void MainWindow::saveSLot()
{qDebug()<<__FUNCTION__<<endl;
}MainWindow::~MainWindow()
{}

main.cpp

#include "mainwindow.h"#include <QApplication>int main(int argc, char *argv[])
{QApplication a(argc, argv);MainWindow w;w.show();return a.exec();
}

二.第二阶段

运行结果(GIF动图)：

day11.pro

QT       += core guigreaterThan(QT_MAJOR_VERSION, 4): QT += widgetsCONFIG += c++11# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0SOURCES += \main.cpp \mainwindow.cppHEADERS += \mainwindow.h# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H#include <QMainWindow>class MainWindow : public QMainWindow
{Q_OBJECTpublic:MainWindow(QWidget *parent = nullptr);~MainWindow();
private:void initMenuBar();void initToolBar();void initDock();
public slots:void saveSLot();
private:QAction* _open;QAction* _close;QAction* _save;
};
#endif // MAINWINDOW_H

mainwindow.cpp

#include"mainwindow.h"
#include<QMenuBar>
#include<QToolBar>
#include<QDebug>
#include<QStatusBar>
#include<QTextEdit>
#include<QDockWidget>
MainWindow::MainWindow(QWidget *parent): QMainWindow(parent)
{QTextEdit* edit=new QTextEdit(this);this->resize(640,480);this->initMenuBar();this->initToolBar();this->initDock();this->statusBar()->showMessage("就绪",5000);//状态栏，显示时间(可选)this->setCentralWidget(edit);}void MainWindow::initToolBar()
{QToolBar* toolBar = this->addToolBar("toolBar");toolBar->addAction(_open);toolBar->addAction(_close);toolBar->addAction(_save);
}
void MainWindow::initDock()
{QTextEdit* edit=new QTextEdit(this);QDockWidget* dock=new QDockWidget(this);this->addDockWidget(Qt::LeftDockWidgetArea,dock);dock->setWidget(edit);
}void MainWindow::initMenuBar()
{this->resize(640,480);QMenuBar* menuBar=this->menuBar();QMenu* fileMenu = new QMenu("文件(&F)",menuBar);//这里设置Alt+F是该按钮的快捷键fileMenu->addAction("default")->setCheckable(true);//是否可对勾点选fileMenu->addSeparator();//添加一个分隔线_open=fileMenu->addAction(QIcon("C:/Users/xiaowen/Pictures/boy1.png"),"打开");_close=fileMenu->addAction(QIcon("C:/Users/xiaowen/Pictures/boy2.jpg"),"关闭",this,SLOT(close()));_save=fileMenu->addAction(QIcon("C:/Users/xiaowen/Pictures/boy3.jpg"),"保存",this,SLOT(saveSlot()),QKeySequence("Ctrl+s"));fileMenu->addMenu("子菜单")->addAction("default");menuBar->addMenu(fileMenu);menuBar->addMenu("帮助(&H)");
}
void MainWindow::saveSLot()
{qDebug()<<__FUNCTION__<<endl;
}MainWindow::~MainWindow()
{}

main.cpp

#include "mainwindow.h"#include <QApplication>int main(int argc, char *argv[])
{QApplication a(argc, argv);MainWindow w;w.show();return a.exec();
}

三.附：概念

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QT每日一练day11：QMainWindow

一.第一阶段

二.第二阶段

三.附：概念

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