I'm a little unclear about the invoking indirectly and posting a message.

So I call the CCheckLCDemoDlg::GetZoomLevels() from the CLCZoomDlg::OnInitDialog(), once I'm in GetZoomLevels I can begin to invoke the list indirectly


Code:
 
CString CCheckLCDemoDlg::GetZoomLevels()
{
CString theText = "";
 
//Invoke somehow, find the item text here
//........
//load the text into variable 'theText and return it as a message??

 return theText;
}

I realise that this doesn't work, how do I invoke the member indirectly?