title: What is raw code of textbox
body: <p>May be i can get some negative points on this question but, really this question is boggling in my mind from last many days that what is the basic/raw code behind textbox(or other such controls).</p>
  
  <p>i mean i understands that, we can inherit the textbox class and make our changes, we creates its object and use it.</p>
  
  <p>but wants to know how that class creates a textbox(the design which allow us to enter text) (same query for other components), is it a code of 'C' language which are generating it using CG (computer graphics) programming or any other thing.</p>
  
  <p>Experts please resolve my curiosity. </p>
  
  <p>Thanks</p>