Hi,
I am new to Emacs, and 
I have the following code as a sample.
I have installed GNU Emacs 23.1.1 (i386-mingw-nt6.1.7600), installed cedet-1.0pre7.tar.gz. , installed ELPA, and company.
You can find my simple Emacs configuration at the bottom.
The problem is, when I type q[0] in main() and press . (dot), I see the 37 members of the vector, not Person although first_name and last_name are expected. The completion works as expected in the function greet() but it has nothing to do with vector.
My question is, how can I accomplish code completion for vector elements too?
#include <iostream>
#include <vector>
using namespace std;
class Person
{
  public:
    string first_name;
    string last_name;
};
void greet(Person a_person)
{
  // a_person.first_name is completed as expected!
  cout << a_person.first_name << "|";
  cout << a_person.last_name << endl;
};
int main()
{
  vector<Person> q(2);
  Person guy1;
  guy1.first_name = "foo";
  guy1.last_name = "bar";
  Person guy2;
  guy2.first_name = "stack";
  guy2.last_name = "overflow";
  q[0] = guy1;
  q[1] = guy2;
  greet(guy1);
  greet(guy2);
  // cout q[0]. I want to see first_name or last_name here!
}
My Emacs configuration:
;;; This was installed by package-install.el.
;;; This provides support for the package system and
;;; interfacing with ELPA, the package archive.
;;; Move this code earlier if you want to reference
;;; packages in your .emacs.
(when
    (load
     (expand-file-name "~/.emacs.d/elpa/package.el"))
  (package-initialize))
(load-file "~/.emacs.d/cedet/common/cedet.el")
(semantic-load-enable-excessive-code-helpers)
(require 'semantic-ia)
(global-srecode-minor-mode 1)
(semantic-add-system-include "/gcc/include/c++/4.4.2" 'c++-mode)
(semantic-add-system-include "/gcc/i386-pc-mingw32/include" 'c++-mode)
(semantic-add-system-include "/gcc/include" 'c++-mode)
(defun my-semantic-hook ()
  (imenu-add-to-menubar "TAGS"))
(add-hook 'semantic-init-hooks 'my-semantic-hook)