How to use "Handler"?

I want to make a solid Disc using script and i found a function called “DrawSolidDisc” (it comes under “Handler”), but still i am unsuccessful to achieve this. If anyone can help… thanks in advance

Hi, welcome to the forum!

Can you give any more information about what you are doing and what is going wrong with it? Perhaps you can post the code or a link to the place where you found it.

First of all thanks for taking interest, I am new for unity and graphic programming. i just want to make a dynamic pie diagram where user can change the parameter and visual of pie chart. For that i want to create a mesh of sector (part of circle) of different angle. I find a help from unity help (http://unity3d.com/support/documentation/ScriptReference/Handles.DrawSolidArc.html) but i dont know how to use handler i.e. editor class. Can you please give the tutorial and brief explanation that “What is editor class and how to use it in unity?”.