What is the difference between (.) and (->) on this code

[rezas1000]

Hello
What is the difference between (.) and (->) on this code??? In both cases, the code runs!!!

#include <QApplication>
 
#include "mainwindow.h"
 
int main(int argc, char *argv[])
{
    Q_INIT_RESOURCE(sdi);
    QApplication app(argc, argv);
    app.setApplicationName("SDI Example");
    app.setOrganizationName("QtProject");
    MainWindow mainWin;
    mainWin.show();
    return app.exec();
}

#include <QApplication>

#include "mainwindow.h"

int main(int argc, char *argv[])
{
    Q_INIT_RESOURCE(sdi);
    QApplication app(argc, argv);
    app.setApplicationName("SDI Example");
    app.setOrganizationName("QtProject");
    MainWindow mainWin;
    mainWin.show();
    return app.exec();
}

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or

#include <QApplication>
 
#include "mainwindow.h"
 
int main(int argc, char *argv[])
{
    Q_INIT_RESOURCE(sdi);
    QApplication app(argc, argv);
    app.setApplicationName("SDI Example");
    app.setOrganizationName("QtProject");
    MainWindow *mainWin = new MainWindow;
    mainWin->show();
    return app.exec();
}

#include <QApplication>

#include "mainwindow.h"

int main(int argc, char *argv[])
{
    Q_INIT_RESOURCE(sdi);
    QApplication app(argc, argv);
    app.setApplicationName("SDI Example");
    app.setOrganizationName("QtProject");
    MainWindow *mainWin = new MainWindow;
    mainWin->show();
    return app.exec();
}

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[anda_skoa]

Compare the two line 11s and see how they respectively create the object.
The line 12s are the matching method call syntax


Cheers,
_

[wysota]

Hello
What is the difference between (.) and (->) on this code??? In both cases, the code runs!!!

Please ask questions related to C++ rather than Qt in the "General Programming" forum.