树问题

Question

怎样遍历树控件的所有结点啊?

Answer 1

void   ExpandTreeItems(const   CTreeCtrl   &   tree,HTREEITEM   hItem)
{
HTREEITEM   hNextItem=hItem;
while(hNextItem!=NULL)
{
hNextItem   =   tree.GetNextItem(hNextItem,   TVGN_NEXT);
if   (tree.ItemHasChildren(hNextItem))
{
HTREEITEM   hNextChild;
HTREEITEM   hChildItem   =   m_tree.GetChildItem(hItem);
while   (hChildItem   !=   NULL)
{
hNextChild=   tree.GetNextItem(hChildItem,   TVGN_NEXT);
...
ExpandTreeItems(tree,hNextChild);
hChildItem   =   hNextChild;
}
}
}
}