基于 Windows 的记事本简单功能开发及部署发布-迭代2.0

#include "mainwindow.h" #include "ui_mainwindow.h" #include <QTextEdit>//中心部件 #include <QMessageBox> //消息提示框 #include <QMenuBar> #include <QMenu> #include <QAction> #include <QDialog> //模态框 #include <QDebug> #include <QLabel> #include <QFont> //字体 #include <QFontDialog> //字体选择框 #include <QStatusBar> //状态栏 #include <QFileDialog> //文件操作框 #include <QFile> //文件操作 #include <QKeySequence> //快捷键 #include <QPushButton> #include <QDesktopServices> void MainWindow::updateFontSize() //更新字体大小 { this->wordSize=ui->textEdit->font().pointSize(); this->leftWordStatus->setNum(this->wordSize); } MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); //标题 this->setWindowTitle("闲事录"); this->resize(600,500); this->wordSize=ui->textEdit->font().pointSize(); this->leftStatus=new QLabel("字体大小："); this->leftWordStatus=new QLabel(""); this->leftWordStatus->setNum(this->wordSize); ui->statusBar->addWidget(this->leftStatus);//左边 ui->statusBar->addWidget(this->leftWordStatus);//左边 //this->rightStatus=new QLabel("文本字数："); ui->statusBar->addPermanentWidget(this->rightStatus); //另存为 ui->actionSaveAs->setShortcut(QKeySequence(Qt::CTRL + Qt::SHIFT + Qt::Key_S)); connect(ui->actionSaveAs,&QAction::triggered,[this](){ //打开文本保存框,用户选中文件保存时 得到绝对路径 //判断用户选择路径不为空 //得到用户输入内容 //创建文件对象，使用只读打开，将内容写入到文件中 this->filePath= QFileDialog::getSaveFileName(this,"另存为","c:/1"); if(!this->filePath.isEmpty()){ QString content= ui->textEdit->toPlainText(); QFile file(this->filePath); file.open(QIODevice::WriteOnly); file.write(content.toUtf8()); } }); //保存功能 ui->actionSave->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_S)); connect(ui->actionSave,&QAction::triggered,this,&MainWindow::saveFile); //新建 connect(ui->actionNew,&QAction::triggered,[this](){ // 如果 isSave 为 false时，需要提示保存 if(this->isSave==false){ QMessageBox myBox( QMessageBox::Question, "提醒", "你的内容没有保存，请确认是否保存！", QMessageBox::Yes|QMessageBox::No|QMessageBox::Cancel ); myBox.setButtonText(QMessageBox::Yes,"保存"); myBox.setButtonText(QMessageBox::No,"不保存"); myBox.button(QMessageBox::Cancel)->setText("取消"); int choses=myBox.exec(); if(choses==QMessageBox::Yes) { this->saveFile(); ui->textEdit->clear();//清空 this->isSave=true; this->filePath=""; } else if (choses==QMessageBox::No){ ui->textEdit->clear();//清空 this->isSave=true; this->filePath=""; } } }); //打开 connect(ui->actionOpen,&QAction::triggered,[this](){ this->judgeIsSaved(); //打开新文件 this->filePath = QFileDialog::getOpenFileName(this,"打开","c:/","*.txt"); if(!this->filePath.isEmpty()) { //根据文件路径读取内容 QFile file(this->filePath); file.open(QIODevice::ReadOnly); QByteArray buf=file.readAll(); //将读取的内容设置到textEdit中 ui->textEdit->setText(QString(buf)); this->isSave=true;//更新保存状态 } }); //1. 点击"退出"时，弹出询问框； 继续点击“确定”按钮时退出程序, 点击“取消”, 不关闭程序 connect(ui->actionExit,&QAction::triggered,[this](){ this->judgeIsSaved(); this->close(); }); //编辑菜单================================== //复制 ui->actionCopy->setShortcut(QKeySequence(Qt::CTRL+Qt::Key_0)); connect(ui->actionCopy,&QAction::triggered,ui->textEdit,&QTextEdit::copy); //剪切 ui->actionCut->setShortcut(QKeySequence(Qt::CTRL+Qt::Key_1)); connect(ui->actionCut,&QAction::triggered,ui->textEdit,&QTextEdit::cut); //粘贴 connect(ui->actionStick,&QAction::triggered,ui->textEdit,&QTextEdit::paste); //撤销 connect(ui->actionWithDrawn,&QAction::triggered,ui->textEdit,&QTextEdit::undo); //格式菜单================================== //自动换行 connect(ui->actionAutoLineWrap,&QAction::triggered,[this](){ if(ui->textEdit->lineWrapMode()==QTextEdit::NoWrap){ ui->textEdit->setLineWrapMode(QTextEdit::WidgetWidth); ui->actionAutoLineWrap->setIcon(QIcon(":/images/duihao")); } else { ui->textEdit->setLineWrapMode(QTextEdit::NoWrap); ui->actionAutoLineWrap->setIcon(QIcon("")); } }); //2. 点击"字体时"，能够弹出字体选择框，最终能够得到用户选择的字体信息。（并能作用到多行文本框上） connect(ui->actionFont,&QAction::triggered,[this](){ bool flag; QFont f=QFontDialog::getFont(&flag); ui->textEdit->setFont(f); this->updateFontSize(); }); //3. 点击“状态栏”，有对号，就显示状态栏； 没有对号，就不显示状态栏 connect(ui->actionStatus,&QAction::triggered,[this](){ this->statusFlag=!this->statusFlag; if(this->statusFlag) { ui->actionStatus->setIcon(QIcon(":/images/duihao")); ui->statusBar->show(); } else { ui->actionStatus->setIcon(QIcon("")); ui->statusBar->hide(); } }); //4. 点击"缩放"—>"放大" | "缩小"时， 多行文本框中的字体大小会变大、变小 connect(ui->actionBigger,&QAction::triggered,[this](){ QFont currFont=ui->textEdit->font(); currFont.setPointSize(ui->textEdit->font().pointSize()+5); ui->textEdit->setFont(currFont); this->updateFontSize(); }); connect(ui->actionSmaller,&QAction::triggered,[this](){ QFont currFont=ui->textEdit->font(); currFont.setPointSize(ui->textEdit->font().pointSize()-5); ui->textEdit->setFont(currFont); this->updateFontSize(); }); //5. 点击“关于我们”， 弹出一个模态框，在模态框中显示软件说明信息 connect(ui->actionAboutUs,&QAction::triggered,[](){ QDialog aboutUsDia; aboutUsDia.setWindowTitle("闲事录"); aboutUsDia.resize(300,200); aboutUsDia.setStyleSheet("background-color:palegreen"); //设置内容 QLabel *l1=new QLabel("闲事录团队",&aboutUsDia); l1->move(180,80); l1->setFont(QFont("楷体",14)); l1->setStyleSheet("color:purple"); QLabel *l2=new QLabel("Tel:17669676769",&aboutUsDia); l2->move(150,170); l2->setFont(QFont("楷体",14)); l2->setStyleSheet("color:red"); //设置图片 QLabel *l3=new QLabel(&aboutUsDia); l3->resize(160,160); l3->setPixmap(QPixmap(":/images/logo")); l3->setScaledContents(true); QPushButton *p1=new QPushButton("关闭",&aboutUsDia); p1->move(50,170); p1->setSty