title: How to create options button with ncurses
body: <p>EHLO</p>
  
  <p>I am into C and ncurses on Linux for the creation of an installer and I am kinda new on this. I have seen installers for linux(especially Anaconda) that can display windows,  with buttons like "OK""NEXT""BACK" like on this link  <a href="https://hurley.files.wordpress.com/2008/01/snack-popcorn-snapshot.png?w=500" rel="nofollow">https://hurley.files.wordpress.com/2008/01/snack-popcorn-snapshot.png?w=500</a> and I need some information about it, I have found menu examples but not too much about "buttons" as I call it.</p>
  
  <p>Greetings. </p>