ReportControl scrollbars draw problem

void CXTPReportThemeOffice2013::DrawWindowFrame(CDC* pDC, CRect rcWindow)
{
    if (::IsWindow(m_pControl->GetSafeHwnd()))
    {
        if (m_pControl->GetExStyle() & WS_EX_STATICEDGE)
        {
            pDC->Draw3dRect(rcWindow, m_clrBtnFace, m_clrBtnFace);
            
            SCROLLINFO  si;
            si.cbSize = sizeof(SCROLLINFO);
            m_pControl->GetScrollInfo(SB_VERT, &si, SIF_ALL);
            m_pControl->SetScrollInfo(SB_VERT, &si); // Note: Causes an OnSize message
            m_pControl->GetScrollInfo(SB_HORZ, &si, SIF_ALL);
            m_pControl->SetScrollInfo(SB_HORZ, &si); // Note: Causes an OnSize message
        }
        else
        {
            CXTPReportPaintManager::DrawWindowFrame(pDC, rcWindow);
        }
    }
}