I would like to know the client area at the chart.

 
Hellow,

I would like to know the client area at the chart.
Please advise me.
Assuming that the point of the left top corner is (0,0), please let me know the coordinats of the the right bottom.

In this case, ObjectSet("",OBJPROP_CORNER,3)shoud not be used.

Many thans and best regards,
Reason: