Stopping any further processing in nested if statements

I have the following function.

Code:

---

void haal::authenticate()
{
    remoteDB();
    QSqlQuery query("SELECT * FROM princess");
    int ttwo = query.record().indexOf("two");
    int tthree = query.record().indexOf("three");
    int ffour = query.record().indexOf("four");
    int ffive = query.record().indexOf("five");
    int ssix = query.record().indexOf("six");
    int sseven = query.record().indexOf("seven");
    int eeight = query.record().indexOf("eight");
    while (query.next()) {
        QString aa = query.value(ttwo).toString();
        QString bb = query.value(tthree).toString();
        QString cc = query.value(ffour).toString();
        QString dd = query.value(ffive).toString();
        QString ee = query.value(ssix).toString();
        QString ff = query.value(sseven).toString();
        QString gg = query.value(eeight).toString();
 
        if(aa != ui.validator->text())
        {
            QMessageBox msgBox;
            msgBox.setText("That Key Is Not Valid.");
            QPushButton *connectButton = msgBox.addButton(tr("Ok"), QMessageBox::AcceptRole);
            msgBox.exec();
 
            if (msgBox.clickedButton() == connectButton)
            {
                //close();//exit the application
                //qApp->exit(0);...stop further processing;exit the application
               //how should it be done..
            }
        }
        if(aa == ui.validator->text())
        {
            if (msgBox.clickedButton() == connectButton)
            {
            QMessageBox msgBox;
            msgBox.setText("That Key Is Valid.");
            }
 
            QString kaad = getID();
            QSqlQuery query;
            query.prepare("INSERT INTO princess (one,two,three,four,five,six,seven) "
                          "VALUES (:one, :two, :three,:four,:five,:six,:seven)");
            query.bindValue(":one", 78);
            query.bindValue(":two", 7843251);
            query.bindValue(":three",79);
            query.bindValue(":four",80);
            query.bindValue(":five",81);
            query.bindValue(":six", 82);
            query.bindValue(":seven",kaad);
            query.exec();
 
        }
    }
 
}

---

I need to stop the processing here:

Code:

---

if (msgBox.clickedButton() == connectButton)
            {
                //close();//exit the application
                //qApp->exit(0);...stop further processing;exit the application
               //nothing to be executed below this line
            }

---

Code:

---

break;

---

to exit while loop or

Code:

---

continue;

---

to move to next query result.

I have tried that but the processing continues.

Is the break; line executed , can you see the debug text ?

Code:

---

while (query.next()) {
        ....
        if(aa != ui.validator->text())
        {
            ....
            if (msgBox.clickedButton() == connectButton)
            {
                 qDebug() << "before break";
                 break;
            }
        }

---

everything below the "break" statement will not be executed, same as here:

Code:

---

#include <iostream>
int main(){
	while( 1 ){
		std::cout << "in while..."; // this will be visible only once
		if( 1 ){
			if( 1 ){
				break; // while loop will end here
			}
		}
		std::cout << "after break..."; // this will not be visible
	}
	return 0;
}

---