Passing pointer to a function with parameters as parameter

Question

I have code, where I need to implement passing pointer to a function with an argument, like in code below, but it doen't seems to be possible.

bool StudentAbsenceTableApp::loadFile(const QString &fileName)
{
    fw.moveToThread(this->thread());
    fw.setParent(this);
    //I need: &(StudentAbsenceTableApp::experimentFunction(fileName)
    QFuture<bool> future =  QtConcurrent::run(this, &StudentAbsenceTableApp::experimentFunction);
    fw.setFuture(future);

    progressBar->show();
}
// I need: experimentFunction(const QString& fileName)
bool StudentAbsenceTableApp::experimentFunction()
{
    QString fileName = "/media/bsuir/data.xml";
    XMLParser *xmlParser = new XMLParser(model);

    xmlParser->read(fileName);
    setCurrentFileName(fileName);
    statusBar()->showMessage(tr("Файл загружен"), 2000);
    documentModified = false;

    return true;
}

But there are no ways, I could find.

If you are able to modify the definition of the class, you can modify the declaration of the member function expermientFunction(). If you are not able to modify the class definition, then you are right. You are out of luck there. — R Sahu
– R Sahu, Commented Jun 8, 2017 at 22:32
Just simply QtConcurrent::run(this, &StudentAbsenceTableApp::experimentFunction, fileName) — Igor Tandetnik
– Igor Tandetnik, Commented Jun 8, 2017 at 22:43

SathishSrinis · Accepted Answer · 2017-06-11 06:30:37Z

1

QtConcurrent::run Supports passing arguments to the function.

QFuture<bool> future =  QtConcurrent::run(this, &StudentAbsenceTableApp::experimentFunction, fileName);

Refer the documentation : http://doc.qt.io/qt-4.8/qtconcurrentrun.html#passing-arguments-to-the-function

answered Jun 11, 2017 at 6:30

SathishSrinis

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