QLabel + timers

[prophet0]

So im making a picture loop but seem to be a little stuck
in main

sClientz2_300_300Data = _myParse->getClientz2_300_300();
 
z2_300_300 = new QLabel(this);
    z2s1_Iterator = new QStringListIterator(sClientz2_300_300Data);
    z2_300_300->setGeometry(QRect(781,34,475,360));
    QTimer::singleShot(0,this, SLOT(startZ2S1()));

sClientz2_300_300Data = _myParse->getClientz2_300_300();

z2_300_300 = new QLabel(this);
    z2s1_Iterator = new QStringListIterator(sClientz2_300_300Data);
    z2_300_300->setGeometry(QRect(781,34,475,360));
    QTimer::singleShot(0,this, SLOT(startZ2S1()));

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startZ2S1()

if(z2s1_Iterator->hasNext())
    {
        z2_300_300->clear();
        z2_300_300->setPixmap(QPixmap("/ttm/images/" + z2s1_Iterator->next()));
        z2_300_300->show();
    }
    if(!z2s1_Iterator->hasNext())
    {
        z2s1_Iterator->toFront();
    }
    emit doneZ2S1();

if(z2s1_Iterator->hasNext())
    {
        z2_300_300->clear();
        z2_300_300->setPixmap(QPixmap("/ttm/images/" + z2s1_Iterator->next()));
        z2_300_300->show();
    }
    if(!z2s1_Iterator->hasNext())
    {
        z2s1_Iterator->toFront();
    }
    emit doneZ2S1();

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the problem i am having is getting this to display the first one only and dont display the next one untill this function is called again

how would i be able to modify my code to do the above?