Process启动进程完成交互并获取输出例程.zip

#include "widget.h" #include "ui_widget.h" #include <QDebug> Widget::Widget(QWidget *parent) : QWidget(parent) , ui(new Ui::Widget) { ui->setupUi(this); process=new QProcess(this); QObject::connect(process,SIGNAL(readyReadStandardOutput()),this, SLOT(slot_readyRead())); process->setProcessChannelMode(QProcess::MergedChannels); } Widget::~Widget() { delete ui; } /* 工程: untitled1 日期: 2021-07-28 作者: DS小龙哥 环境: win10 QT5.12.6 MinGW32 功能: 启动转码 */ void Widget::on_pushButton_start_clicked() { //process->start("C:/FFMPEG/ffmpeg_x86_4.2.2/bin/ffmpeg.exe -i \"D:/test1080.flv\" -y -qscale 0 -vcodec libx264 -acodec aac -ac 1 -ar 22050 -b:v 0 -s 1280x720 -r 25 \"D:/linux-share-dir/video_file/test/out.mp4\""); process->start(ui->lineEdit_start->text()); } /* 工程: untitled1 日期: 2021-07-28 作者: DS小龙哥 环境: win10 QT5.12.6 MinGW32 功能: 有数据可读 */ void Widget::slot_readyRead() { QByteArray qba = process->readAllStandardOutput(); QTextCodec* pTextCodec = QTextCodec::codecForName("System"); assert(pTextCodec != nullptr); QString str = pTextCodec->toUnicode(qba); ui->plainTextEdit->insertPlainText(str); } /* 工程: untitled1 日期: 2021-07-28 作者: DS小龙哥 环境: win10 QT5.12.6 MinGW32 功能: 写数据 */ void Widget::on_pushButton_stop_clicked() { process->write(ui->lineEdit_write->text().toLocal8Bit()); } /* 工程: untitled1 日期: 2021-07-28 作者: DS小龙哥 环境: win10 QT5.12.6 MinGW32 功能: 停止命令 */ void Widget::on_pushButton_exit_clicked() { process->close(); process->waitForFinished(); }