SetPos中，注释掉if( pParent != NULL )后面的内容导致在代码中无法设置控件位置

[cuiguanghui]

void CControlUI::SetPos(RECT rc, bool bNeedInvalidate)
{
if( rc.right < rc.left ) rc.right = rc.left;
if( rc.bottom < rc.top ) rc.bottom = rc.top;

    CDuiRect invalidateRc = m_rcItem;
    if( ::IsRectEmpty(&invalidateRc) ) invalidateRc = rc;

    if( m_bFloat ) {
        CControlUI* pParent = GetParent();
        /*if( pParent != NULL ) {
            RECT rcParentPos = pParent->GetPos();
            RECT rcCtrl = {rcParentPos.left + rc.left, rcParentPos.top + rc.top, 
                rcParentPos.left + rc.right, rcParentPos.top + rc.bottom};
            m_rcItem = rcCtrl;
            LONG width = rcParentPos.right - rcParentPos.left;
            LONG height = rcParentPos.bottom - rcParentPos.top;
            RECT rcPercent = {(LONG)(width*m_piFloatPercent.left), (LONG)(height*m_piFloatPercent.top),
                (LONG)(width*m_piFloatPercent.right), (LONG)(height*m_piFloatPercent.bottom)};
            m_cXY.cx = rc.left - rcPercent.left;
            m_cXY.cy = rc.top - rcPercent.top;
            m_cxyFixed.cx = rc.right - rcPercent.right - m_cXY.cx;
            m_cxyFixed.cy = rc.bottom - rcPercent.bottom - m_cXY.cy;
        }*/
    }
    else {
        m_rcItem = rc;
    }
    m_rcItem = rc;
    if( m_pManager == NULL ) return;

    if( !m_bSetPos ) {
        m_bSetPos = true;
        if( OnSize ) OnSize(this);
        m_bSetPos = false;
    }

    m_bUpdateNeeded = false;

    if( bNeedInvalidate && IsVisible() ) {
        invalidateRc.Join(m_rcItem);
        CControlUI* pParent = this;
        RECT rcTemp;
        RECT rcParent;
        while( pParent = pParent->GetParent() ) {
            if( !pParent->IsVisible() ) return;
            rcTemp = invalidateRc;
            rcParent = pParent->GetPos();
            if( !::IntersectRect(&invalidateRc, &rcTemp, &rcParent) ) return;
        }
        m_pManager->Invalidate(invalidateRc);
    }
}

[gaodeng]

Float 在 CContainerUI::SetFloatPos 里面处理过了。