CTreeCtrl::GetChildItem

發行項
06/10/2015

呼叫此函式以擷取 hItem指定項目子系的樹狀檢視項目。

HTREEITEM GetChildItem( 
   HTREEITEM hItem  
) const;

參數

傳回值

子項目的控制代碼，如果成功，否則 NULL。

範例

HTREEITEM hmyItem = m_TreeCtrl.GetSelectedItem();

// Delete all of the children of hmyItem. 
if (m_TreeCtrl.ItemHasChildren(hmyItem))
{
   HTREEITEM hNextItem;
   HTREEITEM hChildItem = m_TreeCtrl.GetChildItem(hmyItem);

   while (hChildItem != NULL)
   {
      hNextItem = m_TreeCtrl.GetNextItem(hChildItem, TVGN_NEXT);
      m_TreeCtrl.DeleteItem(hChildItem);
      hChildItem = hNextItem;
   }
}