CTP修改密碼分為修改登入密碼和修改資金密碼，不支援修改銀行賬戶密碼。

一、修改密碼

1、修改登入密碼：

CThostFtdcUserPasswordUpdateField req = {0};
				strcpy(req.BrokerID, m_BrokerID);
				strcpy(req.UserID, m_UserID);
				req.OldPassword,41);
				req.NewPassword,41);
				ReqUserPasswordUpdate（&req,reqInfo.nRequestID);

CThostFtdcTradingAccountPasswordUpdateField req = {0};
				strcpy(req.BrokerID, m_BrokerID);
				strcpy(req.AccountID, m_TradingAccounts[reqInfo.lAccIdx].AccountID);
				req.OldPassword;
				req.NewPassword;
				req.CurrencyID;
				ReqTradingAccountPasswordUpdate(&req,reqInfo.nRequestID);
 

CThostFtdcUserLogoutField req = {0};
	memcpy(req.BrokerID, m_BrokerID, sizeof(m_BrokerID));
	memcpy(req.UserID, m_UserID, sizeof(m_UserID));
	ReqTdUserLogout(&req,nRequestID);