怎样对CTreeCtrl 进行自动排序

[yzs001]

怎样对CTreeCtrl 进行自动排序

[yzs001]

不明白呀

[hijack]

CTreeCtrl::SortChildren
BOOL SortChildren( HTREEITEM hItem );

[hijack]

// Sort all of the items in the tree control.
pmyTreeCtrl->SortChildren(TVI_ROOT);

[yzs001]

高手来呀，我急需！

[EddieCai]

如果你只是些想按照字母顺序排序,那么就调用CTreeCtrl的SortChildren方法,此方法的参数是Tree上的某个节点BOOL SortChildren(HTREEITEM hItem); 此方法将此节点下的直接子节点（就是说不会遍历进下一层节点）按照字母顺序排序。

[EddieCai]

如果你是想自己定义一种排序的规则，可以调用CTreeCtrl的SortChildrenCB，但是需要自己提供一个回调函数来实现这种规则。MSDN上有例子：

static int CALLBACK
MyCompareProc(LPARAM lParam1, LPARAM lParam2, LPARAM lParamSort)
{
// lParamSort contains a pointer to the tree control.
// The lParam of an item is just its handle,
// as specified with <A HREF="_mfc_ctreectrl.3a3a.setitemdata.htm">SetItemData</A>
CTreeCtrl* pmyTreeCtrl = (CTreeCtrl*) lParamSort;
CString strItem1 = pmyTreeCtrl->GetItemText((HTREEITEM) lParam1);
CString strItem2 = pmyTreeCtrl->GetItemText((HTREEITEM) lParam2);

return strcmp(strItem2, strItem1);
}

// The pointer to my tree control.
extern CTreeCtrl* pmyTreeCtrl;
TVSORTCB tvs;

// Sort the tree control's items using my
// callback procedure.
tvs.hParent = TVI_ROOT;
tvs.lpfnCompare = MyCompareProc;
tvs.lParam = (LPARAM) pmyTreeCtrl;

pmyTreeCtrl->SortChildrenCB(&tvs);