How to get the text output from an ui program with the qprocess

nicker player

I used the qprocess to start an external program which is an ui program.how to send the messages from the ui program to the qprocess executions?

//project a:
int main(){
qDebug()<<"output";
}

//project b:
int main(){
    qprocess pr;
    pr.called(a.exe);
    while(){
    // how to get the output from the project a?
   }
}

Pl45m4

@nicker-player

You can read the std out of QProcess for example with

JonB

@nicker-player
Please read the QProcess documentation. You will see readAllStandardError/Output(), which can be used to read anything the child process writes on stdout/err.

You will also need to write a properly constructed Qt program. There will be no while loop. Either use waitForFinished() or enter the Qt event loop and use the readyRead... signals.

NOTE: Whether what you call "an ui program" will actually write anything at all to stdout/err is a different matter. Command line program often do, but UI ones may not if all they do is present a UI to the user.

Pl45m4

@JonB said in How to get the text output from an ui program with the qprocess:

NOTE: Whether what you call "an ui program" will actually write anything at all to stdout/err is a different matter.

I assumed that project "a" (the one running as QProcess) is @nicker-player 's own additional Qt GUI app :)

//project a:
int main(){
qDebug()<<"output";
}