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//树列表Tree搜索功能代码，传入要被搜索的树控件tree、要被搜索的列columnID、和关键字，返回收到的Node集合int TreeSearchFun(Tree *tree, int columnID, string Keyword, vector<Node *> &returnNodes)
{
	string strlwrKeyword = string(strlwr((char *)Keyword.c_str()));  //字母转小写
	Node * theNode = tree->RootNode();
	while(theNode != NULL)
	{
		string strlwrNodeStr = string(strlwr((char *)theNode->GetColumnDisplayText(columnID).GetLocaleText()));
		if(strlwrNodeStr.find(strlwrKeyword) != string::npos) 
		{
			returnNodes.push_back(theNode);
		}
 		theNode = theNode->NextNode();
	}
 	return 0;
}