学步园

void CPMAgentManageDlg::OnButtonDelete() 
{
	// TODO: Add your control notification handler code here
	int nGetId;
	while(m_matrixInfoList.GetSelectedCount() > 0) 
	{ 
		POSITION pos = m_matrixInfoList.GetFirstSelectedItemPosition(); 
		if(pos != NULL) 
		{ 
			int nItem = m_matrixInfoList.GetNextSelectedItem(pos);
 			CString str;
			//获取删除矩阵的id号
 			str=m_matrixInfoList.GetItemText(nItem,0);   
 			nGetId=atoi(str);                     
			m_matrixInfoList.DeleteItem(nItem);	

			TiXmlDocument *myDocument = new TiXmlDocument(g_sFilefullPath.c_str());
			myDocument->LoadFile();
			TiXmlNode *RootElement = myDocument->RootElement();
			TiXmlNode *root=myDocument->FirstChild("matrixs");
			TiXmlNode *pChild=root->FirstChild("matrixnum");
			//用到search函数时
			for ( pChild=root->FirstChild("matrixnum"); pChild != 0;)
			{ 	
				if(FALSE==Search(pChild,nGetId,root))     
				pChild = pChild->NextSibling("matrixnum");
			}   
			myDocument->SaveFile(g_sFilefullPath.c_str());
		} 
	}
}
//查询函数，根据结点查找(遍历)
BOOL CPMAgentManageDlg::Search(TiXmlNode *&pChild,int nGetId,TiXmlNode *root)
{
	TiXmlElement *child=pChild->FirstChildElement("matrix");
	int idAttribute=(int)atoi(child->Attribute("id"));
	if (idAttribute==nGetId)
	{
		TiXmlNode *temp=pChild->NextSibling("matrixnum");
		root->RemoveChild(pChild);         //删除
		pChild=temp;                       //删除后把下一个往上挪           
		return TRUE;
	}
	return FALSE;
}