Mt4/mql4 getting started to proficient in foreign exchange EA automatic trading tutorial - common functions of MQL language

AccountBalance();    //  Returns the balance of the current account .
AccountEquity();     //  Returns the net value of the current account .
AccountFreeMargin();  //  Returns the available prepayments for the current account .
AccountMargin();     //  Return the used prepayment of the current account .

Hour();    // Returns the current server's 
Minute();   // Returns the minutes of the server time 
Seconds();  // Returns the seconds of the server time 

iOpen();   // return K The opening price of the string column 
iClose();   // return K The closing price of the string column 
iLow();     // return K The lowest price of the line post 
iHigh();    // return K The highest price of the line post 
iTime();    // return K Time of line post 
iVolume();  // return K Trading volume of the line column 

IsConnected();  // Whether to connect to the server 
IsDemo();      // Is it an impersonation account 
IsDllsAllowed(); // Whether to allow loading DLL file 
IsExpertEnabled();  // Whether automatic transaction is allowed 
IsStopped();       //EA Whether to interrupt execution 
IsTradeAllowed();  // Whether transactions are allowed 
IsTradeContextBusy(); // Whether the transaction is busy 

OrderClose();       // Order closing function 
OrderClosePrice();  // Return the closing price of the order 
OrderCloseTime();   // Return the order closing time 
OrderComment();     // Return to order comment 
OrderDelete();      // Cancel the list 
OrderLots();        // Return the number of orders 
OrderMagicNumber(); // Returns the number of order identifiers 
OrderModify();      // Order modification function 
OrderOpenPrice();   // Return the opening price of the order 
OrderOpenTime();    // Return the opening time of the order 
OrderProfit();      // Return order profit and loss 
OrderSelect();     // Order identification 
OrderSend();       // New order 
OrdersHistoryTotal(); // Return historical order statistics 
OrderStopLoss();     // Return the stop loss price of the order 
OrdersTotal();    // Return all current orders 、 Total number of pending orders 
OrderSymbol();    // Return the order type 
OrderTakeProfit(); // Return the stop profit price of the order 
OrderTicket();    // Return order No 
OrderType();      // Return the order type 

Print();   // Print log 
printf();   // Print log , With format 

Sleep();      // Dormancy function 
StringAdd();  // String concatenation , Returns a new string 
StringCompare(); // String comparison , Equal return 0
StringGetChar();  // String read characters 
StringSetChar();  // Add characters to the string 
StringToCharArray(); // String variable character array 
CharArrayToString();// Characters and numbers become strings 
StringToDouble();   // String becomes double 
DoubleToString();   // Double variable string 
StringToInteger();  // String variable 
StringToTime();     // String table time type 
TimeToString();     // Time class variable string 

Symbol();  // Returns the current chart category 

TimeCurrent(); // Returns the current time of the server 
TimeDayOfWeek();// Returns the day of the week at the current time 
TimeGMT();    // return GTM Time 
TimeGMTOffset();  // Return time difference 
TimeLocal();    // Return to the time on the computer 
TimeHour();     // Returns the hour in time 
TimeMinute();   // Returns the minute in time 
TimeSeconds();  // Returns... In time 
TimeDay();  // Returns the current time and date 
TimeMonth();   // Returns the month in the time 
TimeYear();    // Year in return time 

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