How do I make my Qt app start automatically at login?

qt_start_automatically.cpp

//
// How do I make my Qt app start automatically at login?
// This solution is for Windows and Mac. It was tested with Qt 5.5.
//
// - Andrey Butov ( andreybutov.com )
//
void setAppToStartAutomatically ( bool startAutomatically )
{
#if defined ( Q_OS_MAC )
 
    // Remove any existing login entry for this app first, in case there was one
    // from a previous installation, that may be under a different launch path.
    {
        QStringList args;
        args << "-e tell application \"System Events\" to delete login item\""
            + macOSXAppBundleName() + "\"";
         
        QProcess::execute("osascript", args);
    }
 
    // Now install the login item, if needed.
    if ( startAutomatically )
    {
        QStringList args;
        args << "-e tell application \"System Events\" to make login item at end " + 
            "with properties {path:\"" + macOSXAppBundlePath() + "\", hidden:false}";
         
        QProcess::execute("osascript", args);
    }
 
#elif defined ( Q_OS_WIN )
 
    QString key = "YouApplicationName";
 
    QSettings registrySettings(
        "HKEY_CURRENT_USER\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", 
        QSettings::NativeFormat);
     
    registrySettings.remove(key);
 
    if ( startAutomatically ) {
        registrySettings.setValue(key, QString("\"" + windowsAppPath() + "\""));
    }
 
    registrySettings.sync();
 
#endif
}
 
 
QString macOSXAppBundlePath()
{
#ifdef Q_OS_MAC
    QDir dir = QDir ( QCoreApplication::applicationDirPath() );
    dir.cdUp();
    dir.cdUp();
    QString absolutePath = dir.absolutePath();
    // absolutePath will contain a "/" at the end,
    // but we want the clean path to the .app bundle
    if ( absolutePath.length() > 0 && absolutePath.right(1) == "/" ) {
        absolutePath.chop(1);
    }
    return absolutePath;
#else
    return "";
#endif
}
 
 
QString macOSXAppBundleName()
{
#ifdef Q_OS_MAC
    QString bundlePath = macOSXAppBundlePath();
    QFileInfo fileInfo(bundlePath);
    return fileInfo.baseName();
#else
    return "";
#endif
}
 
 
QString windowsAppPath()
{
#ifdef Q_OS_WIN
    return QDir::toNativeSeparators(QCoreApplication::applicationFilePath());
#else
    return "";
#endif
}

Where do I define my path at applicationFilePath() in line 85?

@DracFiendMG It's a static method on QCodeApplication.

Hi, Thank you for your code.
Btw, I have some issue to run your code....
If possible, could you post real project(.pro) for me to run easily?
Thank you again.