学习QT的基础的Demo

#include "mainwindow.h" #include "ui_mainwindow.h" #pragma execution_character_set("utf-8") #include"formlog.h" #include"pasbarwokerthreaad.h" #include"mypasbarupdateth.h" #include"switchcontrol.h" #include<QMouseEvent> #include<QPainter> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); connect(this,&MainWindow::cliekedMe,this,&MainWindow::ShowClickedMsg); UseToolBar(); InitStatusBarMsg(); InitINICommoBox(); InitSerialPortUI(); m_SerialPort = new QSerialPort(this); initClient(); InitServer(); InitMyDesignControl(); } MainWindow::~MainWindow() { if(m_SerialPort->isOpen()) { m_SerialPort->close(); } delete m_SerialPort; delete ui; } void MainWindow::on_pushButton_5_clicked() { emit cliekedMe(); } void MainWindow::ShowClickedMsg() { this->m_cliekedButtonTimes++; ui->lineEdit->setText("You CLick Me!小王"); ui->textEdit_2->setText("You Have Clieck Button Times is "+ QString::number(this->m_cliekedButtonTimes)); } void MainWindow::UseToolBar() { ui->toolBtn_Use->setText("用户"); ui->toolBtn_Use->setFont(QFont("微软雅黑")); ui->toolBtn_Use->setIcon(QIcon(":/images/用户.png")); ui->toolBtn_Use->setMinimumSize(60,60); ui->toolBtn_Use->setIconSize(QSize(48,48)); ui->toolBtn_Use->setToolButtonStyle(Qt::ToolButtonStyle::ToolButtonTextUnderIcon); ui->toolBtn_Project->setText("项目"); ui->toolBtn_Project->setFont(QFont("微软雅黑")); ui->toolBtn_Project->setIcon(QIcon(":/images/项目.png")); ui->toolBtn_Project->setMinimumSize(60,60); ui->toolBtn_Project->setIconSize(QSize(48,48)); ui->toolBtn_Project->setToolButtonStyle(Qt::ToolButtonStyle::ToolButtonTextUnderIcon); ui->toolBtn_Log->setText("日志"); ui->toolBtn_Log->setFont(QFont("微软雅黑")); ui->toolBtn_Log->setIcon(QIcon(":/images/日志.png")); ui->toolBtn_Log->setMinimumSize(60,60); ui->toolBtn_Log->setIconSize(QSize(48,48)); ui->toolBtn_Log->setToolButtonStyle(Qt::ToolButtonStyle::ToolButtonTextUnderIcon); ui->toolBtn_Camera->setText("图像"); ui->toolBtn_Camera->setFont(QFont("微软雅黑")); ui->toolBtn_Camera->setIcon(QIcon(":/images/图像.png")); ui->toolBtn_Camera->setMinimumSize(60,60); ui->toolBtn_Camera->setIconSize(QSize(48,48)); ui->toolBtn_Camera->setToolButtonStyle(Qt::ToolButtonStyle::ToolButtonTextUnderIcon); } void MainWindow::on_pushButton_3_clicked() { ui->pushButton_4->setVisible(false); ui->pushButton_2->setEnabled(false); } void MainWindow::on_pushButton_clicked() { ui->pushButton_4->setVisible(true); ui->pushButton_2->setEnabled(true); } void MainWindow::InitStatusBarMsg() { //端口设备1 _ComDeviceStatus = new QLabel(this); // _ComDeviceStatus->setStyleSheet("font-size:18px;color:rgb(0,255,0);background-color:rgb(255,255,255)"); _ComDeviceStatus->setStyleSheet("font-size:18px;color:rgb(255,0,0)"); _ComDeviceStatus->setAttribute(Qt::WA_TranslucentBackground, true); //设置背景颜色为透明 ui->statusBar->addWidget(_ComDeviceStatus); QString strCOM1 = "串口"; _ComDeviceStatus->setText(strCOM1); //当前用户 _curUser = new QLabel(this); _curUser->setStyleSheet("font-size:18px"); _curUser->setAttribute(Qt::WA_TranslucentBackground, true); //设置背景颜色为透明 ui->statusBar->addPermanentWidget(_curUser); QString strUser = "用户:作业员"; _curUser->setText(strUser); //版本信息 _versionMsg = new QLabel(this); _versionMsg->setStyleSheet("font-size:18px"); // _versionMsg->setFrameStyle(QFrame::WinPanel | QFrame::Sunken); _versionMsg->setAttribute(Qt::WA_TranslucentBackground, true); //设置背景颜色为透明 ui->statusBar->addPermanentWidget(_versionMsg); QString dateTime; dateTime += __DATE__; dateTime += __TIME__; dateTime.replace(" "," 0"); QString strVerEditTime = QLocale(QLocale::English).toDateTime(dateTime,"MMM dd yyyyhh:mm:ss").toString("yyMMdd"); QString strVersion =" 版本:"+ _VersionNo + strVerEditTime + " "; _versionMsg->setText(strVersion); //跟新当前时间 _curTime = new QLabel(); _curTime->setParent(this); _curTime->setStyleSheet("font-size:18px"); _curTime->setAttribute(Qt::WA_TranslucentBackground, true); //设置背景颜色为透明 ui->statusBar->addPermanentWidget(_curTime); QTimer *timer = new QTimer(this); timer->start(1000); connect(timer,&QTimer::timeout,[=](){UpdateTimeBySecond();}); } void MainWindow::UpdateTimeBySecond() { QString strcurDateTime = "时间:" + QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss")+ " "; _curTime->setText(strcurDateTime); } void MainWindow::closeEvent(QCloseEvent *event) { QMessageBox::StandardButton result = QMessageBox::question(this,"提示","确定要退出当前软件吗？",QMessageBox::Yes | QMessageBox::No,QMessageBox::No); if(result == QMessageBox::Yes) { event->accept(); } else { event->ignore(); } } // 打开只有关闭按钮的窗口 void MainWindow::on_pushButton_6_clicked() { frmLoG = new FormLOG(this); frmLoG->setWindowModality(Qt::ApplicationModal);//设置阻塞类型 frmLoG->setAttribute(Qt::WA_ShowModal,true); //设置是否为模态类型 frmLoG->setWindowFlags(Qt::WindowCloseButtonHint | Qt::Dialog);//设置只有关闭按钮， frmLoG->setAttribute(Qt::WA_DeleteOnClose);//设置窗口关闭时销毁 frmLoG->show(); } /*文本文件读取方式 QIODevice::ReadOnly //以只读方式打开文件，用于载入文件。 QIODevice::WriteOnly //以只写方式打开文件，用于保存文件。 QIODevice::ReadWrite //以读写方式打开。 QIODevice::Append //以添加模式打开，新写入文件的数据添加到文件尾部。 QIODevice::Truncate //以截取方式打开文件，文件原有的内容全部被删除。 QIODevice::Text //以文本方式打开文件，读取时“\n”被自动翻译为换行符，写入时字符串结束符会自动翻译为系统平台的编码，如 Windows 平台下是“\r\n”。 这些取值可以组合，例如 QIODevice::ReadOnly | QIODevice::Text 表示以只读和文本方式打开文件。 */ //读取文本文件内容 void MainWindow::on_btn_ReadTxtFile_clicked() { QString strOpenFile = QCoreApplication::applicationDirPath(); QString path = QFileDialog::getOpenFileName(this,QString("打开要读取的文本文件"),strOpenFile); QFile file(path); file.open(QIODevice::ReadOnly); //读取全部 // QByteArray array = file.readAll(); //逐行读取 // QByteArray array; // while (!file.atEnd()) { // array += file.readLine(); // } //用QTextStream 类读取 QTextStream qstream(&file); //中文存在编码格式问题 // qstream.setCodec(QTextCodec::codecForName("utf-8")); qstream.setCodec(QTextCodec::codecForName("GBK")); QString array = qstream.readAll(); //文件信息的读取 QFileInfo fileInfo(path); array += "\r\n" + QString("文件名：") + fileInfo.fileName(); array += "\r\n" + QString("后缀名：") + fileInfo.suffix(); array += "\r\n" + QString("文件大小：") + fileInfo.size(); // array += "\r\n" + QString("创建日期") + fileInfo.birthTime.toString("yyyy/MM/dd hh:mm:ss"); // array += "\r\n" + QString("修改日期") + fileInfo.lastModified.toString("yyyy/MM/dd hh:mm:ss"); ui->txb_TxtFile->setText(array); ui->ld_TxtFile->setText(strOpenFile); file.close(); } //文本文件的写入 void MainWindow::on_btn_SaveTxtFile