Listbox Caption

I am creating a caption return like in VB for listbox's...


EDIT: Any SendMessage to this control result in 0.

PHP Code:

---

//------------------
//Retrieve caption from the control
//------------------
char* ListBox::Caption()
{
    char* szBuffer=0;
    char* m_Text=0;

    LRESULT Index = SendMessage(m_hwnd, LB_GETCURSEL,0,0);
    LRESULT iLength = SendMessage(m_hwnd, LB_GETTEXTLEN,(WPARAM)Index,0);

    szBuffer = new char[iLength];

    GetWindowText(m_hwnd, szBuffer, iLength);

    m_Text = szBuffer;

    delete szBuffer;

    return m_Text;
} 


---

Problem is, the two SendMessage calls both return 0 no matter what. With many items, all selected, etc, all return 0...it is kinda stupid.

Now I aint sure if I did that right I aint the best with char bufferin properly...I think I need to add one for the null. That aint my problem.