Here we declared mrequest as a MqlTradeRequest type. The result of any trade operation is returned as a special predefined structure of MqlTradeResult type. Any variable declared to be of MqlTradeResult type will be able to access the trade request results.
struct MqlTradeResult uint retcode ; Operation return code ulong deal ; Deal ticket, if it is performed ulong order ; Order ticket, if it is placed double volume ; Deal volume, confirmed by broker double price ; Deal price, confirmed by broker double bid ; Current Bid price double ask ; Current Ask price string comment ; forex Broker tester for mac comment to operation (by default it is filled by the operation description) ; Here we declared mresult as a MqlTradeResult type. The Price (Open, Close, High, Low), the Time, the forex tester for mac Volumes of each bar and the spread for a symbol is stored in this structure. Any array declared to be of the MqlRates type can be used to store the price, volumes and spread history for a symbol.
struct MqlRates datetime time ; Period start time double open ; Open price double high ; The highest price forex tester for mac of the period double low ; The lowest forex tester for mac price of the period double close ; Close price long tick_volume ; Tick volume int spread ; Spread long real_volume ; Trade volume ; Here we have declared an array mrate which will be used to store these information.
Forex tester for mac MT4 from the.Next we decide to forex tester for mac set all the arrays we will be using to store Bars details as series.
This is to ensure that the values that will be copied mt4 robot programming to the arrays will be indexed like the timeseries, that is, 0, 1, 2, 3, (to correspond with the bars index. bool ArraySetAsSeries( void array , array by reference bool set true denotes reverse order of indexing ); It should be noted that this can also be done once at the initialization section of our code. However, I have decided to show it at this point for the sake of our explanation. We now use the SymbolInfoTick function to obtain the latest price quote.
This function takes two arguments – chart symbol and simple day trading strategies the best forex robot ea MqlTick structure variable ( latest_price ). Next we copied the information about the latest three bars into our Mqlrates type array using the CopyRates function. The CopyRates function is used to get history data of MqlRates structure of a specified Symbol-Period in specified quantity into a MqlRates type array. int CopyRates ( string symbol_name , symbol name ENUM_TIMEFRAMES timeframe , period int start_pos , start position int count , data count to copy forex tester MqlRates for mac rates_array target array to copy ); The symbol name is obtained by using ‘ _symbol’ , forex tester for mac the current periodtimeframe is obtained by using ‘ forex tester for mac _period ’.
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