我定义了一个树型控件的变量,但是先用DeleteAllItems函数,然后插入树,怎么才能显示出来呢?前提是我一定要先清空树。请各位高手帮忙
m_MyTree.DeleteAllItems(); TV_INSERTSTRUCT TreeCtrlItem; HTREEITEM hTreeItem;
TreeCtrlItem.hInsertAfter=TVI_LAST;
TreeCtrlItem.item.mask=TVIF_TEXT|TVIF_PARAM; //设置第一级节点
TreeCtrlItem.hParent=TVI_ROOT;
TreeCtrlItem.item.pszText="C:";
hTreeItem=m_MyTree.InsertItem(&TreeCtrlItem);
//设置第二级节点
TreeCtrlItem.hParent=hTreeItem;
TreeCtrlItem.item.pszText="Program Files";
m_MyTree.InsertItem(&TreeCtrlItem);
m_MyTree.DeleteAllItems(); TV_INSERTSTRUCT TreeCtrlItem; HTREEITEM hTreeItem;
TreeCtrlItem.hInsertAfter=TVI_LAST;
TreeCtrlItem.item.mask=TVIF_TEXT|TVIF_PARAM; //设置第一级节点
TreeCtrlItem.hParent=TVI_ROOT;
TreeCtrlItem.item.pszText="C:";
hTreeItem=m_MyTree.InsertItem(&TreeCtrlItem);
//设置第二级节点
TreeCtrlItem.hParent=hTreeItem;
TreeCtrlItem.item.pszText="Program Files";
m_MyTree.InsertItem(&TreeCtrlItem);
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