[QProcess] Calling console program

[wagmare]

navi(avatar) is right ... u can get the readAllStandardOutput() or readAllStandardError() only after the QProcess emits readyRead() signal .. be sure u are receiving std output or std error ... so wait till u receives the signal readyReadStandardOutput() or readyReadStandardError() ..

[bgarisn]

Ok, I still am doing something wrong, but I took the advice both of you presented me. When I click my button, which invokes my command-line based program, it does the following:

QString        program = "/home/bgarrison/code/myUtils";
QStringList    arguments;
 
myProcess = new QProcess(this);
 
connect (myProcess, SIGNAL(readyReadStandardOutput()), this, SLOT(printOutput()));
connect (myProcess, SIGNAL(readyReadStandardError()), this, SLOT(printError()));
 
myProcess->start(program, arguments);
 
myProcess->waitForFinished();

QString        program = "/home/bgarrison/code/myUtils";
QStringList    arguments;

myProcess = new QProcess(this);

connect (myProcess, SIGNAL(readyReadStandardOutput()), this, SLOT(printOutput()));
connect (myProcess, SIGNAL(readyReadStandardError()), this, SLOT(printError()));

myProcess->start(program, arguments);

myProcess->waitForFinished();

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printOutput() is a private SLOT in my class and it does the following:

void cMyUtils::printOutput()
{
    ui->e_Log->append("Got to printOutput()");    // TextEdit to see results
 
    QByteArray byteArray = myProcess->readAllStandardOutput();
    QStringList strLines = QString(byteArray).split("\n");
 
    foreach (QString line, strLines){
        ui->e_Log->append(line);
    }
}

void cMyUtils::printOutput()
{
    ui->e_Log->append("Got to printOutput()");    // TextEdit to see results

    QByteArray byteArray = myProcess->readAllStandardOutput();
    QStringList strLines = QString(byteArray).split("\n");

    foreach (QString line, strLines){
        ui->e_Log->append(line);
    }
}

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void Dialog_FileSplitter::printError()
{
    ui->e_Log->append("Got to printError()");
 
    QByteArray byteArray = myProcess->readAllStandardError();
    QStringList strLines = QString(byteArray).split("\n");
 
    foreach (QString line, strLines){
        ui->e_Log->append(line);
    }
}

void Dialog_FileSplitter::printError()
{
    ui->e_Log->append("Got to printError()");

    QByteArray byteArray = myProcess->readAllStandardError();
    QStringList strLines = QString(byteArray).split("\n");

    foreach (QString line, strLines){
        ui->e_Log->append(line);
    }
}

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This resulted in me being able to see why the program was not starting :)

Got to printError()
/home/bgarrison/code/myUtils: error while loading shared libraries: libboost_regex.so.1.41.0: cannot open shared object file: No such file or directory

Looks like I have a problem linking the Boost libraries, not calling the program using QProcess. Thanks for all of your help!