numlockmanager/config.h

#ifndef CONFIG_H
#define CONFIG_H

#include <QFile>
#include <QCoreApplication>

class Config{
public:
    Config(){ file->exists() ? load() : setMode(0);}
    ~Config(){
        file->close();
        delete file;
    }
    void setMode(int m) { mode = m; save(); }
    int getMode() {return mode;}

private:
    int mode = 0;
    QFile * file = new QFile(QCoreApplication::applicationDirPath() + "/src/config.ini");

    void load(){
        file->open(QIODevice::ReadOnly | QIODevice::Text);
        mode = file->readAll().toInt();
        file->close();
    }

    void save(){
        file->open(QIODevice::WriteOnly | QIODevice::Text);
        QString a;
        a.setNum(mode);
        file->write(a.toUtf8());
        file->close();
    }
};
#endif // CONFIG_H