Help on QProcess - Output Read

Hi,

I am running the below process in my application

Code:

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QProcess *myProcess = new QProcess(this);
 myProcess->start("/EXEC/Unlock");
 myProcess->waitForFinished();
 //qDebug() << "Unlock Output:" << myProcess->readAll(); 
 qDebug() << "Unlock Output:\n" << myProcess->readAllStandardOutput();
 QByteArray newData=myProcess->readAllStandardOutput();
  qDebug() << "Unlock Output:" << newData;

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But the output i read from the read using all the above methods gives empty string.

Help me


In my Process application I will put the below output in console:

Code:

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qDebug() << "FileName Output:" << fileName;

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Quote:

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Originally Posted by augusbas

Hi,

I am running the below process in my application

Code:

---

QProcess *myProcess = new QProcess(this);
 myProcess->start("/EXEC/Unlock");
 myProcess->waitForFinished();
 //qDebug() << "Unlock Output:" << myProcess->readAll(); 
 qDebug() << "Unlock Output:\n" << myProcess->readAllStandardOutput();
 QByteArray newData=myProcess->readAllStandardOutput();
  qDebug() << "Unlock Output:" << newData;

---

But the output i read from using all the above methods gives empty string.

Help me


In my Process application I will put the below output in console:

Code:

---

qDebug() << "FileName Output:" << fileName;

---

---

Anybody please help

I think you can read this thread

http://www.qtcentre.org/forum/f-qt-p...light=QProcess

He read ping output...

Quote:

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Originally Posted by wirasto

I think you can read this thread

http://www.qtcentre.org/forum/f-qt-p...light=QProcess

He read ping output...

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Hi,

thanks for reply...

In my process application, i am trying to put data through qdebug i.e I am printing a QString.

Whether this is the right way to put standard output data?

And i am reading the data in my application through readAllStandardOutput() ; But my output is empty string.

I referred the link send by you, still for me the same output "Empty String"

need your help

qDebug() puts output on standard error so if you want to read output from qDebug() just read standard error: QProcess::readAllStandardError()

Quote:

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Originally Posted by faldżip

qDebug() puts output on standard error so if you want to read output from qDebug() just read standard error: QProcess::readAllStandardError()

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Thanks Buddy.. it worked