HTREEITEM hTreeSubItem = m_oYourTreeCtrl.GetChildItem(hYourTreeItem);
while(hTreeSubItem)//处理子Item；
{
HTREEITEM hTempItem= hTreeSubItem;
hTreeSubItem = m_oYourTreeCtrl.GetNextItem(hTreeSubItem, TVGN_NEXT);
m_ooYourTreeCtrl.DeleteItem(hTempItem);
}
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