Introduction - If you have any usage issues, please Google them yourself
(1) add the property of the number of curves (on one axis, one can draw a number of curves at a time, and 1 to MAX_CURVECOUNT can be set.)
Note: after setting the number, each curve will be painted (even if no value is added to the AddValue! Add the blnShouldDrawCurve variable to decide whether to draw,
'however, suggest how much you want to set up, don't have any extra.