extern CStringArray arString;
CString szStr;
CComboBox *pcombo = (CComboBox*)GetDlgItem(IDC_COMBO);
for (int nPos = 0; nPos <= arString->GetUpperBound(); nPos++)
{
szStr = arString[nPos];
if (pcombo->FindStringExact(-1, szStr) == CB_ERR)
pcombo->AddString(szStr);
}