Allow logins at any interval, but not more than 2 logins in 30 seconds, 4 in 2 minutes and 6 in 10 minutes.
#include <QApplication>
#include "mainform.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
MyWindow *mainWin = new MyWindow;
mainWin->show();
return app.exec();
}