How do I open a new sell or buy position?
Example, how to get data from the iMA indicator (note that the indicator handler needs to be created ONE times in OnInit ()):
//+------------------------------------------------------------------+ //| iMAGet.mq5 | //| Copyright © 2017, Vladimir Karputov | //| http://wmua.ru/slesar/ | //+------------------------------------------------------------------+ #property copyright "Copyright © 2017, Vladimir Karputov" #property link "http://wmua.ru/slesar/" #property version "1.001" //--- input parameters input bool InpGetArray=true; // get values into an array input uchar InpCount=9; // count -> only if "get values into an array"==true input int InpStartPos=1; // start position -> only if "get values into an array"==true input int ma_period=10; // period of ma input int ma_shift=0; // shift input ENUM_MA_METHOD ma_method=MODE_SMA; // type of smoothing input ENUM_APPLIED_PRICE applied_price=PRICE_CLOSE; // type of price input ENUM_TIMEFRAMES period=PERIOD_CURRENT; // timeframe //--- int handle_iMA; // variable for storing the handle of the iMA indicator //+------------------------------------------------------------------+ //| Expert initialization function | //+------------------------------------------------------------------+ int OnInit() { //--- create handle of the indicator iMA handle_iMA=iMA(Symbol(),period,ma_period,ma_shift,ma_method,applied_price); //--- if the handle is not created if(handle_iMA==INVALID_HANDLE) { //--- tell about the failure and output the error code PrintFormat("Failed to create handle of the iMA indicator for the symbol %s/%s, error code %d", Symbol(), EnumToString(Period()), GetLastError()); //--- the indicator is stopped early return(INIT_FAILED); } //--- return(INIT_SUCCEEDED); } //+------------------------------------------------------------------+ //| Expert deinitialization function | //+------------------------------------------------------------------+ void OnDeinit(const int reason) { //--- } //+------------------------------------------------------------------+ //| Expert tick function | //+------------------------------------------------------------------+ void OnTick() { //--- if(!InpGetArray) { double ma_0=iMAGet(0); double ma_1=iMAGet(1); Comment("mode \"get values into an array\" -> false","\n", "MA #0: ",DoubleToString(ma_0,Digits()+1),"\n", "MA #1: ",DoubleToString(ma_1,Digits()+1)); } else { double arr_ma[]; if(iMAGetArray(InpStartPos,InpCount,arr_ma)) Comment("mode \"get values into an array\" -> true","\n", "start position: ",IntegerToString(InpStartPos),", amount to copy: ",IntegerToString(InpCount),"\n", "arr_ma[0]: ",DoubleToString(arr_ma[0],Digits()+1),"\n", "arr_ma[",IntegerToString(InpCount-1),"]: ",DoubleToString(arr_ma[InpCount-1],Digits()+1)); } } //+------------------------------------------------------------------+ //| Get value of buffers for the iMA | //+------------------------------------------------------------------+ double iMAGet(const int index) { double MA[1]; //--- reset error code ResetLastError(); //--- fill a part of the iMABuffer array with values from the indicator buffer that has 0 index if(CopyBuffer(handle_iMA,0,index,1,MA)<0) { //--- if the copying fails, tell the error code PrintFormat("Failed to copy data from the iMA indicator, error code %d",GetLastError()); //--- quit with zero result - it means that the indicator is considered as not calculated return(0.0); } return(MA[0]); } //+------------------------------------------------------------------+ //| Get value of buffers for the iMA in the array | //+------------------------------------------------------------------+ bool iMAGetArray(const int start_pos,const int count,double &arr_buffer[]) { /* int CopyBuffer( int indicator_handle, // indicator handle int buffer_num, // indicator buffer number int start_pos, // start position int count, // amount to copy double buffer[] // target array to copy ); */ //--- bool result=true; if(!ArrayIsDynamic(arr_buffer)) { Print("This a no dynamic array!"); return(false); } ArrayFree(arr_buffer); //--- reset error code ResetLastError(); //--- fill a part of the iMABuffer array with values from the indicator buffer that has 0 index int copied=CopyBuffer(handle_iMA,0,start_pos,count,arr_buffer); if(copied<0) { //--- if the copying fails, tell the error code PrintFormat("Failed to copy data from the iMA indicator, error code %d",GetLastError()); //--- quit with zero result - it means that the indicator is considered as not calculated return(false); } else if(copied<count) { PrintFormat("%d elements from %d were copied",copied,count); DebugBreak(); return(false); } //--- return(result); } //+------------------------------------------------------------------+
After that, you can already start using the trade class CTrade.
Files:
iMAGet.mq5
12 kb
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Okay so I'm very new to this and have very little understanding of trading and I'm just helping someone else out. I have a very simple task: to open a new sell or buy position if certain conditions were met, but I can't seem to work this out. I've tried googling but nothing came out.
I've tried this
void OnTick()
{
CTrade trade;
MqlTick Tick;
bool buyPositionIsOpen = false;
bool sellPositionIsOpen = false;
int mA = iMA (_Symbol, Ma_timeframe, Ma_period, Ma_shift, Ma_method, AppliedPrice);
if (mA - X <= Tick.ask && sellPositionIsOpen == false)
{
trade.Sell(VOLUME, _Symbol, Tick.ask, SL, TP, "");
sellPositionIsOpen = true;
}
if (mA + X >= Tick.bid && buyPositionIsOpen == false)
{
trade.Buy(VOLUME, _Symbol, Tick.bid, SL, TP, "");
buyPositionIsOpen = true;
}
}
(I've also tried using this:
bool PositionOpen(
const string symbol, // symbol
ENUM_ORDER_TYPE order_type, // order type to open position
double volume, // position volume
double price, // execution price
double sl, // Stop Loss price
double tp, // Take Profit price
const string comment="" // comment
)
but it didn't work)
so how do I open a sell or buy position exactly?