title: show function parameters in vim
body: <p>Is there a way in vim to get a popup window with function parameters? (like in visual studio / slick edit)</p>
  
  <p>e.g. when i type "function_name(" vim will open a popup window (like when doing <code>ctrl-n</code> in new versions) and show me the function parameters and which one of them I'm currently typing.</p>
  
  <p>p.s.</p>
  
  <ol>
  <li><p>I'm looking for something a bit more comfortable than <code>ctrl-w</code> <code>ctrl-]</code></p></li>
  <li><p>I'm also looking for a similar functionality that will show me list of available members when typing "var->" or "var."</p></li>
  <li><p>I'm using C</p></li>
  </ol>