title: Get current scroll position from rich text box control?
body: <p>I have searched the internet far and wide and seen many questions like this, but I have not seen an actual answer.</p>
  
  <p>I have a rich text box control with lots of text in it. It has some legal information in this control. By default the "Accept" button is disabled. I want to detect on the scroll event if the position of the v-scroll bar is at the bottom. If it is at the bottom, enable the button.</p>
  
  <p>How would I detect the current v-scroll bar position?</p>
  
  <p>Thank You!</p>
  
  <p><strong>EDIT</strong>
  I am using WinForms (.Net 4.0)</p>