1. 场景描述
还是用开机助手这个软件来举例，软件在编译打包完成后，正常启动后，可以正常读取到与其同级目录下BAT文件中的关机脚本的，如下图
经过测试，是没有问题，但是呢，当我们把程序设置为开机启动，在程序开机自启动后，无法读取程序的关机脚本。
2. 查找原因
2.1 权限原因
在开始部署的时候，把程序安装到了C盘，开始怀疑是不是因为给的权利不够，在给了全部权限后，还是不可以。排除权限问题。
2.2 在部署目录运行
在部署目录手动启动，程序可以正常执行，可以读取到关机脚本。
2.3 文件路径问题
经过百度后，才明白，如果我们把程序设置为开机启动后，因为开机启动的指令其实也是CMD的指令，所以，如果我们在代码中使用以下代码获取程序路径，其实获取到的是CMD程序的运行路径，也就是“C:\Windows\System32”，所以会发现找不到文件
QString appPath = QApplication::applicationFilePath();
3. 解决方法
解决方案也很简单，就是把获取程序路径的代码修改一下，如下：
QString curPath = QCoreApplication::applicationDirPath();
问题解决
附上源码
#include "mainwindow.h" #include "./ui_mainwindow.h" MainWindow::MainWindow(QWidget *parent) : QWidget(parent) , ui(new Ui::MainWindow) { ui->setupUi(this); this->setWindowTitle("网络关机助手"); this->setWindowFlag(Qt::FramelessWindowHint); ui->label_mainBack->setStyleSheet("QLabel{border-image:url(:/images/images/mainBack.png);}"); ui->label_logo->setStyleSheet("QLabel{border-image:url(:/images/images/logo_W.png);}"); ui->pushButton_poweroff->setToolTip("关闭所有在线计算机"); ui->pushButton_close->setToolTip("最小化到任务栏"); ui->pushButton_poweroff->setStyleSheet("QPushButton{border-image:url(:/images/images/pw_n.png);}QPushButton:hover{border-image:url(:/images/images/pw_h.png);}QPushButton:pressed{border-image:url(:/images/images/pw_p.png);}"); ui->label_title->setText("网络关机助手"); readConfig(); initUDPSocket(); initMySystemTrayIcon(); initGetTimeTimer(); getSystemInfor(); } MainWindow::~MainWindow() { if(m_getTimeTimer) { m_getTimeTimer->stop(); delete m_getTimeTimer; m_getTimeTimer = nullptr; } delete ui; } void MainWindow::powerOffBat() { QString strinfo; QProcess p(NULL); QString curPath = QCoreApplication::applicationDirPath(); QString toolPath; toolPath = "/BAT"; curPath.append(toolPath); p.setWorkingDirectory(curPath); toolPath = "/poweroff.bat"; curPath.append(toolPath); p.start(curPath); if(p.waitForFinished()) { qDebug() << "成功"; } else { QMessageBox::warning(this,"警告","执行关机脚本失败\r\n请检查程序根目录下BAT文件中是否存在‘poweroff.bat’"); } } void MainWindow::sentConmad() { m_Socket->writeDatagram(QString::number(1,16).toLatin1(),QHostAddress::Broadcast,8088); } void MainWindow::on_pushButton_poweroff_clicked() { /* * 关机指令需要测试，UDP广播应该是自己也可以收到，所以这里应该不需要单独执行关机指令 */ sentConmad(); } void MainWindow::getUDPDate() { while (m_Socket->hasPendingDatagrams()) { QByteArray datagram; datagram.resize(m_Socket->pendingDatagramSize()); m_Socket->readDatagram(datagram.data(),datagram.size()); if(datagram.toInt() == 0x01) { if(this->isHidden()) { this->show(); } powerOffBat(); } } } void MainWindow::on_pushButton_close_clicked() { // this->close(); //最后注释 this->hide(); } void MainWindow::initMySystemTrayIcon() { /* * 设置系统托盘内容 */ m_trayIcon = new QSystemTrayIcon(this); m_trayIcon->setIcon(QIcon(":/images/images/logo.ico")); m_trayIcon->setToolTip("关机助手"); m_trayIcon->show(); connect(m_trayIcon,&QSystemTrayIcon::activated,this,[=](QSystemTrayIcon::ActivationReason temp){ switch (temp) { case QSystemTrayIcon::Trigger: { //单击图标时间 break; } case QSystemTrayIcon::DoubleClick: { if(this->isHidden()) { this->showNormal(); } else { this->hide(); } break; } } }); initMySystemTrayIconAction(); initMySystemTrayIconMenu(); // m_trayIcon->showMessage("Tip","PowerControl is running",QSystemTrayIcon::MessageIcon::Information,3); } void MainWindow::initMySystemTrayIconAction() { m_showWindowAction = new QAction(QIcon(":/images/images/logo.ico"),"显示界面",this); connect(m_showWindowAction,&QAction::triggered,this,[=](){this->show();}); m_exitAppAction = new QAction(QIcon(":/images/images/exit.ico"),"退出程序",this); connect(m_exitAppAction,&QAction::triggered,this,[=](){this->close();}); m_powerOffAppAction = new QAction(QIcon(":/images/images/logo.ico"),"一键关机",this); connect(m_powerOffAppAction,&QAction::triggered,this,&MainWindow::on_pushButton_poweroff_clicked); } void MainWindow::initMySystemTrayIconMenu() { m_trayIconMenu = new QMenu(this); m_trayIconMenu->addAction(m_powerOffAppAction); m_trayIconMenu->addSeparator(); m_trayIconMenu->addAction(m_showWindowAction); m_trayIconMenu->addAction(m_exitAppAction); m_trayIcon->setContextMenu(m_trayIconMenu); } void MainWindow::initUDPSocket() { m_Socket = new QUdpSocket(); m_Socket->bind(8088,QUdpSocket::ShareAddress); connect(m_Socket,&QUdpSocket::readyRead,this,&MainWindow::getUDPDate); } static QPoint last(0,0); //保存坐标 const int TITLE_HEIGHT = 50; //这里也可以使用宏定义，保存标题高度，也就是鼠标点击区域的高度 void MainWindow::mousePressEvent(QMouseEvent *event) { if(event->position().y()<TITLE_HEIGHT) { last = event->globalPosition().toPoint(); } } void MainWindow::mouseMoveEvent(QMouseEvent *event) { if(event->position().y()<TITLE_HEIGHT) { int dx = event->globalPosition().x() - last.x(); int dy = event->globalPosition().y() - last.y(); last = event->globalPosition().toPoint(); this->move(this->x()+dx,this->y()+dy); } } void MainWindow::mouseReleaseEvent(QMouseEvent *event) { if(event->position().y()<TITLE_HEIGHT) { int dx = event->globalPosition().x() - last.x(); int dy = event->globalPosition().y() - last.y(); this->move(this->x()+dx,this->y()+dy); } } QString MainWindow::getTime(QString format) { QTime mTime = QTime::currentTime(); if(ui->checkBox_isTimerOff->isChecked()) if(mTime.hour() == mTimeOff.hour() && mTime.minute() == mTimeOff.minute()) { ui->checkBox_isTimerOff->setChecked(false); QSettings *config = new QSettings("CONFIG.ini",QSettings::IniFormat); config->setValue("TimerOff/HH",mTime.hour()); config->setValue("TimerOff/MM",mTime.minute()); sentConmad(); } return mTime.toString(format); } void MainWindow::initGetTimeTimer() { if(!m_getTimeTimer) { m_getTimeTimer = new QTimer(this); } connect(m_getTimeTimer,&QTimer::timeout,this,[=](){ ui->pushButton_close->setText(getTime("hh:mm")); }); m_getTimeTimer->start(500); } void MainWindow::getSystemInfor() { m_systemName = QHostInfo::localHostName(); QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses(); for (int i = 0; i < ipAddressesList.size(); ++i) { if (ipAddressesList.at(i) != QHostAddress::LocalHost && ipAddressesList.at(i).toIPv4Address()) { m_systemIp = ipAddressesList.at(i).toString(); break; } } if (m_systemIp.isEmpty()) m_systemIp = QHostAddress(QHostAddress::LocalHost).toString(); ui->label_sysInfor->setText(QString("设备名称：%1\r\nI P 地址：%2").arg(m_systemName).arg(m_systemIp)); } void MainWindow::readConfig() { QString curPath = QCoreApplication::applicationDirPath(); curPath.append("/CONFIG.ini"); QSettings *config = new QSettings(curPath,QSettings::IniFormat); ui->timeEdit_off->setTime(QTime(config->value("TimerOff/HH").toInt(),config->value("TimerOff/MM").toInt(),0,0)); if(config->value("TimerOff/FLAG").toInt()) { ui->checkBox_isTimerOff->setChecked(true); } } void MainWindow::on_timeEdit_off_userTimeChanged(const QTime &time) { mTimeOff = time; } void MainWindow::on_checkBox_isTimerOff_clicked(bool checked) { QString curPath = QCoreApplication::applicationDirPath(); curPath.append("/CONFIG.ini"); QSettings *config = new QSettings(curPath,QSettings::IniFormat); if(checked) { config->setValue("TimerOff/FLAG",1); config->setValue("TimerOff/HH",ui->timeEdit_off->time().hour()); config->setValue("TimerOff/MM",ui->timeEdit_off->time().minute()); } else config->setValue("TimerOff/FLAG",0); }
