title: seeking autocomplete functionality in emacs
body: <p>I am seeking a plugin to do autocompletion popup for c++ development in emacs. what I have tried are Cedet Semantics and the <a href="http://cx4a.org/software/auto-complete/index.html">Autocompletion mode</a>, they are pretty neat in terms of completing the variable and function names as long as I have a few words already. For example, I have a class named foo and a function that returns an integer 1</p>
  
  <pre><code>class foo{
     int getInt(){return 1};
  };
  </code></pre>
  
  <p>In the main method, so long as I started typing this</p>
  
  <pre><code>int main(){
   foo bar;
   bar.get...
  }
  </code></pre>
  
  <p>the plugins have no problem popping up suggestions like bar.getInt(). However, what I am really looking for is something like in Eclipse, as soon as I press the "dot", possible choices could be generated for me. Is that possible in Emacs? Thanks</p>