readyAllStandardOutput doesn't return anything

[saeedhardan]

Hi ,
im trying to run plink.exe and get its output .
as you know when you first try to connect to a remote computer for the first time you'll get a warning that says this remote pc's key isn't recognized do you trust y/n .......
when I try to read this output using :

      process->waitForreadyRead();
      output = process->readAllStandardOutput();

i don't get anything , see this picture.
the output is empty .
but if i continue and press y , and after the connection is successful , then use the above code to read , i get the output of the session only , meaning this part only output .
how can i also read the output of plink in the first picture ?
thanks
to further explain the problem this is the "complete code" :

process->start("plink.exe",input_list,QIODevice::ReadWrite);
process->waitForStarted();
process->waitForReadyRead();
Qstring output = process->readAllStandardOutput();
"analyze output and check what the program is asking if decided to continue then"
process->write("y\n");
process->waitForFinished();
output = process->readAllStandardOutput();
Qmessagebox::information(this,"info",output);