QCustomPlot Discussion and Comments

In oscilloscope display we have two zero lines and axes are at the middle. I have to display two graphs, one in the upper region and other in the lower region, something similar to the image in this link:
http://courses.cs.washington.edu/courses/cse467/05wi/tools/oscopefordummies/OscopeBasics.html

Have a look here:
http://www.qcustomplot.com/index.php/support/forum/86

Anything else is just straight-forward as you just have to draw the graphs using the provided functions.