[QT4] QProcess and readin data from xterm

rexStart · 02-09-2009, 02:46 PM

I sarts xterm from my program by using QProcess.
I need to send to xterm "tty" command and reads its output.
I try to do it a such way

Code:

	
        terminalProc.start("xterm");
	terminalProc.setReadChannel(QProcess::StandardOutput);
	
	terminalProc.waitForStarted(-1);
	terminalProc.write("tty\n");	
	QByteArray result = terminalProc.readAllStandardOutput();

But result is empty. What i am doing wrong?
Is there any other way to get value of tty?

Mara · 02-12-2009, 03:22 PM

Qt manual says this:

Quote:

QProcess more;
more.start("more");
more.write("Text to display");
more.closeWriteChannel();
// QProcess will emit readyRead() once "more" starts printing

It may be a good idea to wait for readReady(), because readAllStandardOutput() doesn't guarantee a wait until the data is available.