CTreeCtrl控件的查找节点

最新推荐文章于 2025-08-21 15:00:25 发布

原创最新推荐文章于 2025-08-21 15:00:25 发布 · 2.2k 阅读

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#null #tree

本文介绍了一种在树形控件中查找特定节点的方法。通过递归遍历树形结构，该方法能够从根节点开始查找具有指定数据的节点。适用于需要在复杂树形结构中快速定位元素的应用场景。

HTREEITEM CTreeFind(CTreeCtrl& tree, HTREEITEM hRootItem, unsigned int ulNode)
{
    DWORD ulData;
    HTREEITEM hTreeRes;

    hTreeRes = NULL;
    ulData = tree.GetItemData(hRootItem);
    if (ulData == ulNode)
    {
        hTreeRes = hRootItem;
    }
    else if (tree.ItemHasChildren(hRootItem))
    {
        HTREEITEM hChildItem = tree.GetChildItem(hRootItem);
        while(hChildItem!=NULL)
        {
            hTreeRes = CTreeFind(tree, hChildItem, ulNode);
            if (hTreeRes != NULL)
            {
                break;
            }
            hChildItem = tree.GetNextItem(hChildItem, TVGN_NEXT);
        }
    }

    return hTreeRes;
}

HTREEITEM GetTreeItem(unsigned int ulNode)
{

HTREEITEM pRes = NULL;
HTREEITEM pRoot = NULL;

    pRoot = m_treeMain.GetRootItem();
    while (pRoot != NULL)
    {
        pRes = CTreeFind(m_treeMain, pRoot, ulNode);
        if (pRes != NULL)
        {
            break;
        }
        pRoot = m_treeMain.GetNextItem(pRoot, TVGN_NEXT);
    }

    return pRes;
}