How to use Chartfx in VC++

[gensus]

Hello,
Can anyone expalin me how to use chartfx in VC++:
I put the control on a dialog winndow,I associated a variable to it and I tried without understanding the following code:

int m=n=5;
m_chart.OpenDataEx(1,m,n);
for(i=0;i<m;i++)
{
m_chart.SetThisSerie(i);
for(j=0;j<n;j++)
{
m_chart.SetThisPoint(j);
m_chart.SetValue(j,300);
}
}
m_chart.Refresh();
m_chart.CloseData(1);

Thank You by advance