Method SetScrollPos

DuiLib/Control/UIRichEdit.cpp:1728–1757

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void CRichEditUI::SetScrollPos(SIZE szPos)
{
    int cx = 0;
    int cy = 0;
    if( m_pVerticalScrollBar && m_pVerticalScrollBar->IsVisible() ) {
        int iLastScrollPos = m_pVerticalScrollBar->GetScrollPos();
        m_pVerticalScrollBar->SetScrollPos(szPos.cy);
        cy = m_pVerticalScrollBar->GetScrollPos() - iLastScrollPos;
    }
    if( m_pHorizontalScrollBar && m_pHorizontalScrollBar->IsVisible() ) {
        int iLastScrollPos = m_pHorizontalScrollBar->GetScrollPos();
        m_pHorizontalScrollBar->SetScrollPos(szPos.cx);
        cx = m_pHorizontalScrollBar->GetScrollPos() - iLastScrollPos;
    }
    if( cy != 0 ) {
        int iPos = 0;
        if( m_pTwh && !m_bRich && m_pVerticalScrollBar && m_pVerticalScrollBar->IsVisible() ) 
            iPos = m_pVerticalScrollBar->GetScrollPos();
        WPARAM wParam = MAKEWPARAM(SB_THUMBPOSITION, m_pVerticalScrollBar->GetScrollPos());
        TxSendMessage(WM_VSCROLL, wParam, 0L, 0);
        if( m_pTwh && !m_bRich && m_pVerticalScrollBar && m_pVerticalScrollBar->IsVisible() ) {
            if( cy > 0 && m_pVerticalScrollBar->GetScrollPos() <= iPos )
                m_pVerticalScrollBar->SetScrollPos(iPos);
        }
    }
    if( cx != 0 ) {
        WPARAM wParam = MAKEWPARAM(SB_THUMBPOSITION, m_pHorizontalScrollBar->GetScrollPos());
        TxSendMessage(WM_HSCROLL, wParam, 0L, 0);
    }
}

void CRichEditUI::LineUp()
{