MQL4参考标准常量，列举和架构环境状态 账户属性

Account Properties

To obtain information about the current account there are several functions: AccountInfoInteger(), AccountInfoDouble() and AccountInfoString(). The function parameter values can accept values from the corresponding ENUM_ACCOUNT_INFO enumerations.

For the function AccountInfoInteger()

ENUM_ACCOUNT_INFO_INTEGER

Identifier	Description	Type
ACCOUNT_LOGIN	Account number	long
ACCOUNT_TRADE_MODE	Account trade mode	ENUM_ACCOUNT_TRADE_MODE
ACCOUNT_LEVERAGE	Account leverage	long
ACCOUNT_LIMIT_ORDERS	Maximum allowed number of open positions and active pending orders (in total), 0 ― unlimited	int
ACCOUNT_MARGIN_SO_MODE	Mode for setting the minimal allowed margin	ENUM_ACCOUNT_STOPOUT_MODE
ACCOUNT_TRADE_ALLOWED	Allowed trade for the current account	bool
ACCOUNT_TRADE_EXPERT	Allowed trade for an Expert Advisor	bool

For the function AccountInfoDouble()

ENUM_ACCOUNT_INFO_DOUBLE

Identifier	Description	Type
ACCOUNT_BALANCE	Account balance in the deposit currency	double
ACCOUNT_CREDIT	Account credit in the deposit currency	double
ACCOUNT_PROFIT	Current profit of an account in the deposit currency	double
ACCOUNT_EQUITY	Account equity in the deposit currency	double
ACCOUNT_MARGIN	Account margin used in the deposit currency	double
ACCOUNT_MARGIN_FREE	Free margin of an account in the deposit currency	double
ACCOUNT_MARGIN_LEVEL	Account margin level in percents	double
ACCOUNT_MARGIN_SO_CALL	Margin call level. Depending on the set ACCOUNT_MARGIN_SO_MODE is expressed in percents or in the deposit currency	double
ACCOUNT_MARGIN_SO_SO	Margin stop out level. Depending on the set ACCOUNT_MARGIN_SO_MODE is expressed in percents or in the deposit currency	double
ACCOUNT_MARGIN_INITIAL	Not supported	double
ACCOUNT_MARGIN_MAINTENANCE	Not supported	double
ACCOUNT_ASSETS	Not supported	double
ACCOUNT_LIABILITIES	Not supported	double
ACCOUNT_COMMISSION_BLOCKED	Not supported	double

For function AccountInfoString()

ENUM_ACCOUNT_INFO_STRING

Identifier	Description	Type
ACCOUNT_NAME	Client name	string
ACCOUNT_SERVER	Trade server name	string
ACCOUNT_CURRENCY	Account currency	string
ACCOUNT_COMPANY	Name of a company that serves the account	string

There are several types of accounts that can be opened on a trade server. The type of account on which an MQL4 program is running can be found out using the ENUM_ACCOUNT_TRADE_MODE enumeration.

ENUM_ACCOUNT_TRADE_MODE

Identifier	Description
ACCOUNT_TRADE_MODE_DEMO	Demo account
ACCOUNT_TRADE_MODE_CONTEST	Contest account
ACCOUNT_TRADE_MODE_REAL	Real account

In case equity is not enough for maintaining open orders, the Stop Out situation, i.e. forced closing occurs. The minimum margin level at which Stop Out occurs can be set in percentage or in monetary terms. To find out the mode set for the account use the ENUM_ACCOUNT_STOPOUT_MODE enumeration.

ENUM_ACCOUNT_STOPOUT_MODE

Identifier	Description
ACCOUNT_STOPOUT_MODE_PERCENT	Account stop out mode in percents
ACCOUNT_STOPOUT_MODE_MONEY	Account stop out mode in money

An example of the script that outputs a brief account information.

//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
void OnStart()
  {
//--- Name of the company
   string company=AccountInfoString(ACCOUNT_COMPANY);
//--- Name of the client
   string name=AccountInfoString(ACCOUNT_NAME);
//--- Account number
   long login=AccountInfoInteger(ACCOUNT_LOGIN);
//--- Name of the server
   string server=AccountInfoString(ACCOUNT_SERVER);
//--- Account currency
   string currency=AccountInfoString(ACCOUNT_CURRENCY);
//--- Demo, contest or real account
   ENUM_ACCOUNT_TRADE_MODE account_type=(ENUM_ACCOUNT_TRADE_MODE)AccountInfoInteger(ACCOUNT_TRADE_MODE);
//--- Now transform the value of  the enumeration into an understandable form
   string trade_mode;
   switch(account_type)
     {
      case  ACCOUNT_TRADE_MODE_DEMO:
         trade_mode="demo";
         break;
      case  ACCOUNT_TRADE_MODE_CONTEST:
         trade_mode="contest";
         break;
      default:
         trade_mode="real";
         break;
     }
//--- Stop Out is set in percentage or money
   ENUM_ACCOUNT_STOPOUT_MODE stop_out_mode=(ENUM_ACCOUNT_STOPOUT_MODE)AccountInfoInteger(ACCOUNT_MARGIN_SO_MODE);
//--- Get the value of the levels when Margin Call and Stop Out occur
   double margin_call=AccountInfoDouble(ACCOUNT_MARGIN_SO_CALL);
   double stop_out=AccountInfoDouble(ACCOUNT_MARGIN_SO_SO);
//--- Show brief account information
   PrintFormat("The account of the client '%s' #%d %s opened in '%s' on the server '%s'",
               name,login,trade_mode,company,server);
   PrintFormat("Account currency - %s, MarginCall and StopOut levels are set in %s",
               currency,(stop_out_mode==ACCOUNT_STOPOUT_MODE_PERCENT)?"percentage":" money");
   PrintFormat("MarginCall=%G, StopOut=%G",margin_call,stop_out);
  }

符号属性测试统计