title: Can't edit combo box value in CFiledialog in Windows XP SP3
body: <p>The Custome <code>FileDialog</code> which I derived from <code>CFiledialog</code>.
  In it's <code>OnInitDialog()</code> I updated it's layout to <code>WS_EX_LAYOUTRTL</code> (for arabic) then I set callback method <code>SetChildLayout</code> to Enumerate all child item and set it's layout to <code>WS_EX_LAYOUTRTL</code>.</p>
  
  <p>After doing all these things when dialog is up, I can't access filename combo box. It's type is <code>CComboBoxEx</code>.</p>
  
  <p>I can edit combo box only after resizing my custome dialog.</p>
  
  <p>Any idea?</p>