MFC

CString

.IsEmpty()

.GetLength()
.Empty()

.Delete()

.Replace()
.LoadString()
.GetBuffer()
.GetBufferSetLength()
.ReleaseBuffer()
.+()

CString strData[] = {_T("SUN"), _T("MON"), _T("TUE"),
            _T("WED"), _T("THU"),_T("FRI"), _T("SAT") };

void CComboBox::GetLBText(int nIndex, CString& rString) const
{
    ASSERT(::IsWindow(m_hWnd));
    GetLBText(nIndex, rString.GetBufferSetLength(GetLBTextLen(nIndex)));
    rString.ReleaseBuffer();
}

참조 사이트:

http://www.codeguru.com/forum/archive/index.php/t-231153.html