Qt控制台输入输出实现exe间通信

包含

#include

输出到控制台

    QString str = tr("Im cld");

    QTextStream out(stdout);

    out << str < 中文支持 
  
 
  
 
  
QString str = QString::fromLocal8Bit("清输入任意参数：");
 
  
 
  

 
  
获取控制台的输入内容
 
  
 
  
    QTextStream in(stdin);
 
  
    if(!in.atEnd())
 
  
        in >> str;
 
  
    ui->textEdit->append(tr("接收到的参数")+str);
 
  
 
  
 
  

 
  
使用消息监听控制台的输入
 
  
    filein.open(stdin, QIODevice::ReadOnly);
     QSocketNotifier* sn = new QSocketNotifier(filein.handle(), QSocketNotifier::Read, this);
     connect(sn, SIGNAL(activated(int)), this, SLOT(readFromServer(int)));
 
  
实际测试没有接收到消息怀疑是QFile不支持readyRead
 
  

 
  

 
  
调用端实现
 
  
 
  
    myChildProcess = new QProcess(this);
 
  
    QObject::connect(myChildProcess,SIGNAL(readyReadStandardOutput()),this,SLOT(receiver()));
 
  
 
  

 
  
//接收外部传入的参数
 
  
void MainWindow::receiver()
 
  
{
 
  
    QString str=tr("接收内容： ");
 
  
    ui->textEdit->append(str+myChildProcess->readAll());
 
  
}
 
  
 
  
 
  
 
  
//向外部程序发送参数
 
  
void MainWindow::on_pushButton_2_clicked()
 
  
{
 
  
    if(!myChildProcess->waitForStarted()){  //没有运行的子程序，向父窗口发送
 
  
        QTextStream out(stdout);
 
  
        out << ui->lineEdit_2->text() < 
  
        return;
 
  
    }
 
  
    QString str = ui->lineEdit_2->text()+tr("\r\n");
 
  
    myChildProcess->write(str.toLatin1().constData(),str.length());
 
  
    ui->textEdit->append(tr("内容发送"));
 
  
}
 
  
 
  
 
  
 
  
//调用外部程序
 
  
void MainWindow::on_pushButton_clicked()
 
  
{
 
  
    myChildProcess->setProcessChannelMode(QProcess::MergedChannels);
 
  
    myChildProcess->start(ui->lineEdit->text());
 
  
    if(!myChildProcess->waitForStarted()){
 
  
        ui->textEdit->append(tr("启动失败:%1").arg(myChildProcess->errorString()));
 
  
    }
 
  
    else{
 
  
        ui->textEdit->append("启动成功：请发送参数测试");
 
  
    }
 
  
}