QPainter - drawing new graphics without removing old stuff

[aamer4yu]

something like -

QTimer::singleShot(500,this, onTimer());
 
void Dlg::OnTimer()
{
m_index_of_point++;
drawPoint(m_pointList[m_index_of_point],x,y);   // move the index to next point and draw it at x,y positiom. 
}

QTimer::singleShot(500,this, onTimer());

void Dlg::OnTimer()
{
m_index_of_point++;
drawPoint(m_pointList[m_index_of_point],x,y);   // move the index to next point and draw it at x,y positiom. 
}

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Hope u get the idea