void comboWnd::ensureVisible(int iIndex)
{
if( m_pOwner->getCurSel() < 0 ) return;
m_pLayout->findSelectable(m_pOwner->getCurSel(), false);
RECT rcItem = m_pLayout->getItemAt(iIndex)->getPosition();
RECT rcList = m_pLayout->getPosition();
scrollBarUC* pHorizontalScrollBar = m_pLayout->getHorizontalScrollBar();
if( pHorizontalScrollBar && pHorizontalScrollBar->isVisible() ) rcList.bottom -= pHorizontalScrollBar->getFixedHeight();
int iPos = m_pLayout->getScrollPos().cy;
if( rcItem.top >= rcList.top && rcItem.bottom < rcList.bottom ) return;
int dx = 0;
if( rcItem.top < rcList.top ) dx = rcItem.top - rcList.top;
if( rcItem.bottom > rcList.bottom ) dx = rcItem.bottom - rcList.bottom;
dx += rectHeight(rcList) - rectHeight(rcItem); // 确保显示行在最上显示
scroll(0, dx);
}
/*