Safety check. The main place this can be a problem is on a mild bowl w/ multiple hogs. Could possibly add a hog collision check in here.
#include <QApplication>
#include "mainform.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
MyWindow *mainWin = new MyWindow;
mainWin->show();
return app.exec();
}