Martin increasing distance

Author: Copyright © 2018, Vladimir Karputov
Price Data Components
Series array that contains tick volumes of each bar
Miscellaneous
It issuies visual alerts to the screen
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Martin increasing distance 
ÿþ//+------------------------------------------------------------------+

//|                                   Martin increasing distance.mq5 |

//|                              Copyright © 2018, Vladimir Karputov |

//|                                           http://wmua.ru/slesar/ |

//+------------------------------------------------------------------+

#property copyright "Copyright © 2018, Vladimir Karputov"

#property link      "http://wmua.ru/slesar/"

#property version   "1.001"

//---

#include <Trade\PositionInfo.mqh>

#include <Trade\Trade.mqh>

#include <Trade\SymbolInfo.mqh>  

#include <Trade\AccountInfo.mqh>

#include <Trade\DealInfo.mqh>

#include <Trade\OrderInfo.mqh>

#include <Expert\Money\MoneyFixedMargin.mqh>

CPositionInfo  m_position;                   // trade position object

CTrade         m_trade;                      // trading object

CSymbolInfo    m_symbol;                     // symbol info object

CAccountInfo   m_account;                    // account info wrapper

CDealInfo      m_deal;                       // deals object

COrderInfo     m_order;                      // pending orders object

CMoneyFixedMargin *m_money;

//+------------------------------------------------------------------+

//| Enum Lor or Risk                                                 |

//+------------------------------------------------------------------+

enum ENUM_LOT_OR_RISK

  {

   lot=0,   // Constant lot

   risk=1,  // Risk in percent for a deal

  };

//--- input parameters

input ushort   InpTakeProfit     = 140;      // Take Profit, in pips (1.00045-1.00055=1 pips)

input ushort   InpFirstStep      = 30;       // FirstStep, in pips (1.00045-1.00055=1 pips)

input double   InpTakeMoney      = 1000;     // Take money

input ENUM_LOT_OR_RISK IntLotOrRisk=risk;    // Money management: Lot OR Risk

input double   InpVolumeLotOrRisk=3.0;       // The value for "Money management"

input bool     InpPrintLog       = false;    // Print log

input ulong    m_magic=304332985;            // magic number

//---

ulong  m_slippage=10;                        // slippage

double ExtTakeProfit    = 0.0;               // Take Profit    -> double

double ExtFirstStep     = 0.0;               // First Step     -> double

int    handle_iFractals;                     // variable for storing the handle of the iFractals indicator 

double m_adjusted_point;                     // point value adjusted for 3 or 5 points

bool   m_need_open_buy           = false;

bool   m_need_open_sell          = false;

bool   m_waiting_transaction     = false;    // "true" -> it's forbidden to trade, we expect a transaction

ulong  m_waiting_order_ticket    = 0;        // ticket of the expected order

bool   m_transaction_confirmed   = false;    // "true" -> transaction confirmed

double m_last_IN_deal_price      = 0.0;

//+------------------------------------------------------------------+

//| Expert initialization function                                   |

//+------------------------------------------------------------------+

int OnInit()

  {

   m_last_IN_deal_price=0.0;

   MathSrand(GetTickCount()); //--- initialize the generator of random numbers 

//---

   if(!m_symbol.Name(Symbol())) // sets symbol name

      return(INIT_FAILED);

   RefreshRates();

//---

   m_trade.SetExpertMagicNumber(m_magic);

   m_trade.SetMarginMode();

   m_trade.SetTypeFillingBySymbol(m_symbol.Name());

   m_trade.SetDeviationInPoints(m_slippage);

//--- tuning for 3 or 5 digits

   int digits_adjust=1;

   if(m_symbol.Digits()==3 || m_symbol.Digits()==5)

      digits_adjust=10;

   m_adjusted_point=m_symbol.Point()*digits_adjust;



   ExtTakeProfit  = InpTakeProfit   * m_adjusted_point;

   ExtFirstStep   = InpFirstStep    * m_adjusted_point;

//--- check the input parameter "Lots"

   string err_text="";

   if(IntLotOrRisk==lot)

     {

      if(!CheckVolumeValue(InpVolumeLotOrRisk,err_text))

        {

         //--- when testing, we will only output to the log about incorrect input parameters

         if(MQLInfoInteger(MQL_TESTER))

           {

            Print(__FUNCTION__,", ERROR: ",err_text);

            return(INIT_FAILED);

           }

         else // if the Expert Advisor is run on the chart, tell the user about the error

           {

            Alert(__FUNCTION__,", ERROR: ",err_text);

            return(INIT_PARAMETERS_INCORRECT);

           }

        }

     }

   else

     {

      if(m_money!=NULL)

         delete m_money;

      m_money=new CMoneyFixedMargin;

      if(m_money!=NULL)

        {

         if(InpVolumeLotOrRisk<1 || InpVolumeLotOrRisk>100)

           {

            Print("The value for \"Money management\" (",DoubleToString(InpVolumeLotOrRisk,2),") -> invalid parameters");

            Print("   parameter must be in the range: from 1.00 to 100.00");

            return(INIT_FAILED);

           }

         if(!m_money.Init(GetPointer(m_symbol),Period(),m_symbol.Point()*digits_adjust))

            return(INIT_FAILED);

         m_money.Percent(InpVolumeLotOrRisk);

        }

      else

        {

         Print(__FUNCTION__,", ERROR: Object CMoneyFixedMargin is NULL");

         return(INIT_FAILED);

        }

     }

//---

   return(INIT_SUCCEEDED);

  }

//+------------------------------------------------------------------+

//| Expert deinitialization function                                 |

//+------------------------------------------------------------------+

void OnDeinit(const int reason)

  {

//---

   if(m_money!=NULL)

      delete m_money;

  }

//+------------------------------------------------------------------+

//| Expert tick function                                             |

//+------------------------------------------------------------------+

void OnTick()

  {

//---

   if(m_waiting_transaction)

     {

      if(!m_transaction_confirmed)

        {

         Print("m_transaction_confirmed: ",m_transaction_confirmed);

         return;

        }

      else if(m_transaction_confirmed)

        {

         m_need_open_buy            = false;    // "true" -> need to open BUY

         m_need_open_sell           = false;    // "true" -> need to open SELL

         m_waiting_transaction      = false;    // "true" -> it's forbidden to trade, we expect a transaction

         m_waiting_order_ticket     = 0;        // ticket of the expected order

         m_transaction_confirmed    = false;    // "true" -> transaction confirmed

        }

     }

   if(m_need_open_buy)

     {

      double level;

      if(FreezeStopsLevels(level))

        {

         m_waiting_transaction=true;

         OpenPosition(POSITION_TYPE_BUY,level);

        }

      return;

     }

   if(m_need_open_sell)

     {

      double level;

      if(FreezeStopsLevels(level))

        {

         m_waiting_transaction=true;

         OpenPosition(POSITION_TYPE_SELL,level);

        }

      return;

     }

//--- we work only at the time of the birth of new bar

   static datetime PrevBars=0;

   datetime time_0=iTime(m_symbol.Name(),Period(),0);

   if(time_0==PrevBars)

      return;

   PrevBars=time_0;

   if(!RefreshRates())

     {

      PrevBars=0;

      return;

     }

//--- 

   int count_buys=0;    double volume_buys=0.0;    double volume_biggest_buys=0.0;

   int count_sells=0;   double volume_sells=0.0;   double volume_biggest_sells=0.0;

   CalculateAllPositions(count_buys,volume_buys,volume_biggest_buys,

                         count_sells,volume_sells,volume_biggest_sells);

   if(count_buys+count_sells==0)

     {

      int type=(MathRand());

      if(type<32767/2)

         m_need_open_buy=true;

      else

         m_need_open_sell=true;

     }

   else

     {

      if(count_buys>0 && count_sells>0) // ERROR!

        {

         CloseAllPositions();

         PrevBars=0;

         return;

        }

      else if(count_buys>0 && count_sells==0)

        {

         double price=0.0;

         if(count_buys>1)

           {

            double net_price_buy,net_price_sell;

            CalculationNetPrice(net_price_buy,net_price_sell);

            price=net_price_buy;

           }

         else

            price=m_last_IN_deal_price;



         if(m_symbol.Bid()>=price+ExtTakeProfit)

           {

            CloseAllPositions();

            PrevBars=0;

            return;

           }

         if(m_account.Equity()-m_account.Balance()>=InpTakeMoney)

           {

            CloseAllPositions();

            PrevBars=0;

            return;

           }

         if(m_symbol.Ask()<=price-ExtFirstStep)

           {

            m_need_open_buy=true;

           }

        }

      else if(count_buys==0 && count_sells>0)

        {

         double price=0.0;

         if(count_sells>1)

           {

            double net_price_buy,net_price_sell;

            CalculationNetPrice(net_price_buy,net_price_sell);

            price=net_price_sell;

           }

         else

            price=m_last_IN_deal_price;



         if(m_symbol.Ask()<=price-ExtTakeProfit)

           {

            CloseAllPositions();

            PrevBars=0;

            return;

           }

         if(m_account.Equity()-m_account.Balance()>=InpTakeMoney)

           {

            CloseAllPositions();

            PrevBars=0;

            return;

           }

         if(m_symbol.Bid()>=price-ExtFirstStep)

           {

            m_need_open_sell=true;

           }

        }

     }

//---

  }

//+------------------------------------------------------------------+

//| TradeTransaction function                                        |

//+------------------------------------------------------------------+

void OnTradeTransaction(const MqlTradeTransaction &trans,

                        const MqlTradeRequest &request,

                        const MqlTradeResult &result)

  {

//--- get transaction type as enumeration value 

   ENUM_TRADE_TRANSACTION_TYPE type=trans.type;

//--- if transaction is result of addition of the transaction in history

   if(type==TRADE_TRANSACTION_DEAL_ADD)

     {

      long     deal_ticket       =0;

      long     deal_order        =0;

      long     deal_time         =0;

      long     deal_time_msc     =0;

      long     deal_type         =-1;

      long     deal_entry        =-1;

      long     deal_magic        =0;

      long     deal_reason       =-1;

      long     deal_position_id  =0;

      double   deal_volume       =0.0;

      double   deal_price        =0.0;

      double   deal_commission   =0.0;

      double   deal_swap         =0.0;

      double   deal_profit       =0.0;

      string   deal_symbol       ="";

      string   deal_comment      ="";

      string   deal_external_id  ="";

      if(HistoryDealSelect(trans.deal))

        {

         deal_ticket       =HistoryDealGetInteger(trans.deal,DEAL_TICKET);

         deal_order        =HistoryDealGetInteger(trans.deal,DEAL_ORDER);

         deal_time         =HistoryDealGetInteger(trans.deal,DEAL_TIME);

         deal_time_msc     =HistoryDealGetInteger(trans.deal,DEAL_TIME_MSC);

         deal_type         =HistoryDealGetInteger(trans.deal,DEAL_TYPE);

         deal_entry        =HistoryDealGetInteger(trans.deal,DEAL_ENTRY);

         deal_magic        =HistoryDealGetInteger(trans.deal,DEAL_MAGIC);

         deal_reason       =HistoryDealGetInteger(trans.deal,DEAL_REASON);

         deal_position_id  =HistoryDealGetInteger(trans.deal,DEAL_POSITION_ID);



         deal_volume       =HistoryDealGetDouble(trans.deal,DEAL_VOLUME);

         deal_price        =HistoryDealGetDouble(trans.deal,DEAL_PRICE);

         deal_commission   =HistoryDealGetDouble(trans.deal,DEAL_COMMISSION);

         deal_swap         =HistoryDealGetDouble(trans.deal,DEAL_SWAP);

         deal_profit       =HistoryDealGetDouble(trans.deal,DEAL_PROFIT);



         deal_symbol       =HistoryDealGetString(trans.deal,DEAL_SYMBOL);

         deal_comment      =HistoryDealGetString(trans.deal,DEAL_COMMENT);

         deal_external_id  =HistoryDealGetString(trans.deal,DEAL_EXTERNAL_ID);

        }

      else

         return;

      if(deal_symbol==m_symbol.Name() && deal_magic==m_magic)

        {

         if(deal_entry==DEAL_ENTRY_IN)

           {

            if(deal_type==DEAL_TYPE_BUY || deal_type==DEAL_TYPE_SELL)

              {

               if(m_waiting_transaction)

                  if(m_waiting_order_ticket==deal_order)

                    {

                     Print(__FUNCTION__," Transaction confirmed");

                     m_transaction_confirmed=true;

                     m_last_IN_deal_price=deal_price;

                    }

              }

           }

         else if(deal_entry==DEAL_ENTRY_INOUT || deal_entry==DEAL_ENTRY_OUT)

           {

            m_last_IN_deal_price=0.0;

           }

        }

     }

  }

//+------------------------------------------------------------------+

//| Refreshes the symbol quotes data                                 |

//+------------------------------------------------------------------+

bool RefreshRates(void)

  {

//--- refresh rates

   if(!m_symbol.RefreshRates())

     {

      Print("RefreshRates error");

      return(false);

     }

//--- protection against the return value of "zero"

   if(m_symbol.Ask()==0 || m_symbol.Bid()==0)

      return(false);

//---

   return(true);

  }

//+------------------------------------------------------------------+

//| Check the correctness of the position volume                     |

//+------------------------------------------------------------------+

bool CheckVolumeValue(double volume,string &error_description)

  {

//--- minimal allowed volume for trade operations

   double min_volume=m_symbol.LotsMin();

   if(volume<min_volume)

     {

      if(TerminalInfoString(TERMINAL_LANGUAGE)=="Russian")

         error_description=StringFormat("1J5< <5=LH5 <8=8<0;L=> 4>?CAB8<>3> SYMBOL_VOLUME_MIN=%.2f",min_volume);

      else

         error_description=StringFormat("Volume is less than the minimal allowed SYMBOL_VOLUME_MIN=%.2f",min_volume);

      return(false);

     }

//--- maximal allowed volume of trade operations

   double max_volume=m_symbol.LotsMax();

   if(volume>max_volume)

     {

      if(TerminalInfoString(TERMINAL_LANGUAGE)=="Russian")

         error_description=StringFormat("1J5< 1>;LH5 <0:A8<0;L=> 4>?CAB8<>3> SYMBOL_VOLUME_MAX=%.2f",max_volume);

      else

         error_description=StringFormat("Volume is greater than the maximal allowed SYMBOL_VOLUME_MAX=%.2f",max_volume);

      return(false);

     }

//--- get minimal step of volume changing

   double volume_step=m_symbol.LotsStep();

   int ratio=(int)MathRound(volume/volume_step);

   if(MathAbs(ratio*volume_step-volume)>0.0000001)

     {

      if(TerminalInfoString(TERMINAL_LANGUAGE)=="Russian")

         error_description=StringFormat("1J5< =5 :@0B5= <8=8<0;L=><C H03C SYMBOL_VOLUME_STEP=%.2f, 1;8609H89 ?@028;L=K9 >1J5< %.2f",

                                        volume_step,ratio*volume_step);

      else

         error_description=StringFormat("Volume is not a multiple of the minimal step SYMBOL_VOLUME_STEP=%.2f, the closest correct volume is %.2f",

                                        volume_step,ratio*volume_step);

      return(false);

     }

   error_description="Correct volume value";

   return(true);

  }

//+------------------------------------------------------------------+

//| Check Freeze and Stops levels                                    |

//+------------------------------------------------------------------+

bool FreezeStopsLevels(double &level)

  {

//--- check Freeze and Stops levels

/*

   Type of order/position  |  Activation price  |  Check

   ------------------------|--------------------|--------------------------------------------

   Buy Limit order         |  Ask               |  Ask-OpenPrice  >= SYMBOL_TRADE_FREEZE_LEVEL

   Buy Stop order          |  Ask	            |  OpenPrice-Ask  >= SYMBOL_TRADE_FREEZE_LEVEL

   Sell Limit order        |  Bid	            |  OpenPrice-Bid  >= SYMBOL_TRADE_FREEZE_LEVEL

   Sell Stop order	      |  Bid	            |  Bid-OpenPrice  >= SYMBOL_TRADE_FREEZE_LEVEL

   Buy position            |  Bid	            |  TakeProfit-Bid >= SYMBOL_TRADE_FREEZE_LEVEL 

                           |                    |  Bid-StopLoss   >= SYMBOL_TRADE_FREEZE_LEVEL

   Sell position           |  Ask	            |  Ask-TakeProfit >= SYMBOL_TRADE_FREEZE_LEVEL

                           |                    |  StopLoss-Ask   >= SYMBOL_TRADE_FREEZE_LEVEL

                           

   Buying is done at the Ask price                 |  Selling is done at the Bid price

   ------------------------------------------------|----------------------------------

   TakeProfit        >= Bid                        |  TakeProfit        <= Ask

   StopLoss          <= Bid	                     |  StopLoss          >= Ask

   TakeProfit - Bid  >= SYMBOL_TRADE_STOPS_LEVEL   |  Ask - TakeProfit  >= SYMBOL_TRADE_STOPS_LEVEL

   Bid - StopLoss    >= SYMBOL_TRADE_STOPS_LEVEL   |  StopLoss - Ask    >= SYMBOL_TRADE_STOPS_LEVEL

*/

   if(!RefreshRates() || !m_symbol.Refresh())

      return(false);

//--- FreezeLevel -> for pending order and modification

   double freeze_level=m_symbol.FreezeLevel()*m_symbol.Point();

   if(freeze_level==0.0)

      freeze_level=(m_symbol.Ask()-m_symbol.Bid())*3.0;

   freeze_level*=1.1;

//--- StopsLevel -> for TakeProfit and StopLoss

   double stop_level=m_symbol.StopsLevel()*m_symbol.Point();

   if(stop_level==0.0)

      stop_level=(m_symbol.Ask()-m_symbol.Bid())*3.0;

   stop_level*=1.1;



   if(freeze_level<=0.0 || stop_level<=0.0)

      return(false);



   level=(freeze_level>stop_level)?freeze_level:stop_level;

//---

   return(true);

  }

//+------------------------------------------------------------------+

//| Open position                                                    |

//+------------------------------------------------------------------+

void OpenPosition(const ENUM_POSITION_TYPE pos_type,const double level)

  {

//--- buy

   if(pos_type==POSITION_TYPE_BUY)

     {

      //double price=m_symbol.Ask();



      double sl=0.0;



      double tp=0.0;



      OpenBuy(sl,tp);

     }

//--- sell

   if(pos_type==POSITION_TYPE_SELL)

     {

      //double price=m_symbol.Bid();



      double sl=0.0;



      double tp=0.0;



      OpenSell(sl,tp);

     }

  }

//+------------------------------------------------------------------+

//| Open Buy position                                                |

//+------------------------------------------------------------------+

void OpenBuy(double sl,double tp)

  {

   sl=m_symbol.NormalizePrice(sl);

   tp=m_symbol.NormalizePrice(tp);



   double long_lot=0.0;

   if(IntLotOrRisk==risk)

     {

      long_lot=m_money.CheckOpenLong(m_symbol.Ask(),sl);

      if(InpPrintLog)

         Print("sl=",DoubleToString(sl,m_symbol.Digits()),

               ", CheckOpenLong: ",DoubleToString(long_lot,2),

               ", Balance: ",    DoubleToString(m_account.Balance(),2),

               ", Equity: ",     DoubleToString(m_account.Equity(),2),

               ", FreeMargin: ", DoubleToString(m_account.FreeMargin(),2));

      if(long_lot==0.0)

        {

         m_waiting_transaction=false;

         if(InpPrintLog)

            Print(__FUNCTION__,", ERROR: method CheckOpenLong returned the value of \"0.0\"");

         return;

        }

     }

   else if(IntLotOrRisk==lot)

      long_lot=InpVolumeLotOrRisk;

   else

     {

      m_waiting_transaction=false;

      return;

     }

   if(m_symbol.LotsLimit()>0.0)

     {

      int count_buys=0;    double volume_buys=0.0;    double volume_biggest_buys=0.0;

      int count_sells=0;   double volume_sells=0.0;   double volume_biggest_sells=0.0;

      CalculateAllPositions(count_buys,volume_buys,volume_biggest_buys,

                            count_sells,volume_sells,volume_biggest_sells);

      if(volume_buys+volume_sells+long_lot>m_symbol.LotsLimit())

        {

         Print("#0 Buy, Volume Buy (",DoubleToString(volume_buys,2),

               ") + Volume Sell (",DoubleToString(volume_sells,2),

               ") + Volume long (",DoubleToString(long_lot,2),

               ") > Lots Limit (",DoubleToString(m_symbol.LotsLimit(),2),")");

         return;

        }

     }

//--- check volume before OrderSend to avoid "not enough money" error (CTrade)

   double free_margin_check= m_account.FreeMarginCheck(m_symbol.Name(),ORDER_TYPE_BUY,long_lot,m_symbol.Ask());

   double margin_check     = m_account.MarginCheck(m_symbol.Name(),ORDER_TYPE_SELL,long_lot,m_symbol.Bid());

   if(free_margin_check>margin_check)

     {

      if(m_trade.Buy(long_lot,m_symbol.Name(),m_symbol.Ask(),sl,tp)) // CTrade::Buy -> "true"

        {

         if(m_trade.ResultDeal()==0)

           {

            if(m_trade.ResultRetcode()==10009) // trade order went to the exchange

              {

               m_waiting_transaction=true;  // "true" -> it's forbidden to trade, we expect a transaction

               m_waiting_order_ticket=m_trade.ResultOrder();

              }

            else

               m_waiting_transaction=false;

            if(InpPrintLog)

               Print("#1 Buy -> false. Result Retcode: ",m_trade.ResultRetcode(),

                     ", description of result: ",m_trade.ResultRetcodeDescription());

            if(InpPrintLog)

               PrintResultTrade(m_trade,m_symbol);

           }

         else

           {

            if(m_trade.ResultRetcode()==10009)

              {

               m_waiting_transaction=true;  // "true" -> it's forbidden to trade, we expect a transaction

               m_waiting_order_ticket=m_trade.ResultOrder();

              }

            else

               m_waiting_transaction=false;

            if(InpPrintLog)

               Print("#2 Buy -> true. Result Retcode: ",m_trade.ResultRetcode(),

                     ", description of result: ",m_trade.ResultRetcodeDescription());

            if(InpPrintLog)

               PrintResultTrade(m_trade,m_symbol);

           }

        }

      else

        {

         m_waiting_transaction=false;

         if(InpPrintLog)

            Print("#3 Buy -> false. Result Retcode: ",m_trade.ResultRetcode(),

                  ", description of result: ",m_trade.ResultRetcodeDescription());

         if(InpPrintLog)

            PrintResultTrade(m_trade,m_symbol);

        }

     }

   else

     {

      m_waiting_transaction=false;

      if(InpPrintLog)

         Print(__FUNCTION__,", ERROR: method CAccountInfo::FreeMarginCheck returned the value ",DoubleToString(free_margin_check,2));

      return;

     }

//---

  }

//+------------------------------------------------------------------+

//| Open Sell position                                               |

//+------------------------------------------------------------------+

void OpenSell(double sl,double tp)

  {

   sl=m_symbol.NormalizePrice(sl);

   tp=m_symbol.NormalizePrice(tp);



   double short_lot=0.0;

   if(IntLotOrRisk==risk)

     {

      short_lot=m_money.CheckOpenShort(m_symbol.Bid(),sl);

      if(InpPrintLog)

         Print("sl=",DoubleToString(sl,m_symbol.Digits()),

               ", CheckOpenLong: ",DoubleToString(short_lot,2),

               ", Balance: ",    DoubleToString(m_account.Balance(),2),

               ", Equity: ",     DoubleToString(m_account.Equity(),2),

               ", FreeMargin: ", DoubleToString(m_account.FreeMargin(),2));

      if(short_lot==0.0)

        {

         m_waiting_transaction=false;

         if(InpPrintLog)

            Print(__FUNCTION__,", ERROR: method CheckOpenShort returned the value of \"0.0\"");

         return;

        }

     }

   else if(IntLotOrRisk==lot)

      short_lot=InpVolumeLotOrRisk;

   else

     {

      m_waiting_transaction=false;

      return;

     }

   if(m_symbol.LotsLimit()>0.0)

     {

      int count_buys=0;    double volume_buys=0.0;    double volume_biggest_buys=0.0;

      int count_sells=0;   double volume_sells=0.0;   double volume_biggest_sells=0.0;

      CalculateAllPositions(count_buys,volume_buys,volume_biggest_buys,

                            count_sells,volume_sells,volume_biggest_sells);

      if(volume_buys+volume_sells+short_lot>m_symbol.LotsLimit())

         Print("#0 Buy, Volume Buy (",DoubleToString(volume_buys,2),

               ") + Volume Sell (",DoubleToString(volume_sells,2),

               ") + Volume short (",DoubleToString(short_lot,2),

               ") > Lots Limit (",DoubleToString(m_symbol.LotsLimit(),2),")");

      return;

     }

//--- check volume before OrderSend to avoid "not enough money" error (CTrade)

   double free_margin_check= m_account.FreeMarginCheck(m_symbol.Name(),ORDER_TYPE_SELL,short_lot,m_symbol.Bid());

   double margin_check     = m_account.MarginCheck(m_symbol.Name(),ORDER_TYPE_SELL,short_lot,m_symbol.Bid());

   if(free_margin_check>margin_check)

     {

      if(m_trade.Sell(short_lot,m_symbol.Name(),m_symbol.Bid(),sl,tp)) // CTrade::Sell -> "true"

        {

         if(m_trade.ResultDeal()==0)

           {

            if(m_trade.ResultRetcode()==10009) // trade order went to the exchange

              {

               m_waiting_transaction=true;  // "true" -> it's forbidden to trade, we expect a transaction

               m_waiting_order_ticket=m_trade.ResultOrder();

              }

            else

               m_waiting_transaction=false;

            if(InpPrintLog)

               Print("#1 Sell -> false. Result Retcode: ",m_trade.ResultRetcode(),

                     ", description of result: ",m_trade.ResultRetcodeDescription());

            if(InpPrintLog)

               PrintResultTrade(m_trade,m_symbol);

           }

         else

           {

            if(m_trade.ResultRetcode()==10009)

              {

               m_waiting_transaction=true;  // "true" -> it's forbidden to trade, we expect a transaction

               m_waiting_order_ticket=m_trade.ResultOrder();

              }

            else

               m_waiting_transaction=false;

            if(InpPrintLog)

               Print("#2 Sell -> true. Result Retcode: ",m_trade.ResultRetcode(),

                     ", description of result: ",m_trade.ResultRetcodeDescription());

            if(InpPrintLog)

               PrintResultTrade(m_trade,m_symbol);

           }

        }

      else

        {

         m_waiting_transaction=false;

         if(InpPrintLog)

            Print("#3 Sell -> false. Result Retcode: ",m_trade.ResultRetcode(),

                  ", description of result: ",m_trade.ResultRetcodeDescription());

         if(InpPrintLog)

            PrintResultTrade(m_trade,m_symbol);

        }

     }

   else

     {

      m_waiting_transaction=false;

      if(InpPrintLog)

         Print(__FUNCTION__,", ERROR: method CAccountInfo::FreeMarginCheck returned the value ",DoubleToString(free_margin_check,2));

      return;

     }

//---

  }

//+------------------------------------------------------------------+

//| Print CTrade result                                              |

//+------------------------------------------------------------------+

void PrintResultTrade(CTrade &trade,CSymbolInfo &symbol)

  {

   Print("File: ",__FILE__,", symbol: ",symbol.Name());

   Print("Code of request result: "+IntegerToString(trade.ResultRetcode()));

   Print("code of request result as a string: "+trade.ResultRetcodeDescription());

   Print("Deal ticket: "+IntegerToString(trade.ResultDeal()));

   Print("Order ticket: "+IntegerToString(trade.ResultOrder()));

   Print("Volume of deal or order: "+DoubleToString(trade.ResultVolume(),2));

   Print("Price, confirmed by broker: "+DoubleToString(trade.ResultPrice(),symbol.Digits()));

   Print("Current bid price: "+DoubleToString(symbol.Bid(),symbol.Digits())+" (the requote): "+DoubleToString(trade.ResultBid(),symbol.Digits()));

   Print("Current ask price: "+DoubleToString(symbol.Ask(),symbol.Digits())+" (the requote): "+DoubleToString(trade.ResultAsk(),symbol.Digits()));

   Print("Broker comment: "+trade.ResultComment());

   int d=0;

  }

//+------------------------------------------------------------------+

//| Get value of buffers                                             |

//+------------------------------------------------------------------+

double iGetArray(const int handle,const int buffer,const int start_pos,const int count,double &arr_buffer[])

  {

   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 iBands array with values from the indicator buffer

   int copied=CopyBuffer(handle,buffer,start_pos,count,arr_buffer);

   if(copied!=count)

     {

      //--- if the copying fails, tell the error code 

      PrintFormat("Failed to copy data from the indicator, error code %d",GetLastError());

      //--- quit with zero result - it means that the indicator is considered as not calculated 

      return(false);

     }

   return(result);

  }

//+------------------------------------------------------------------+

//| Close positions                                                  |

//+------------------------------------------------------------------+

void ClosePositions(const ENUM_POSITION_TYPE pos_type)

  {

   for(int i=PositionsTotal()-1;i>=0;i--) // returns the number of current positions

      if(m_position.SelectByIndex(i))     // selects the position by index for further access to its properties

         if(m_position.Symbol()==m_symbol.Name() && m_position.Magic()==m_magic)

            if(m_position.PositionType()==pos_type) // gets the position type

               m_trade.PositionClose(m_position.Ticket()); // close a position by the specified symbol

  }

//+------------------------------------------------------------------+

//| Calculate all positions                                          |

//+------------------------------------------------------------------+

void CalculateAllPositions(int &count_buys,double &volume_buys,double &volume_biggest_buys,

                           int &count_sells,double &volume_sells,double &volume_biggest_sells)

  {

   count_buys  =0;   volume_buys   = 0.0; volume_biggest_buys  = 0.0;

   count_sells =0;   volume_sells  = 0.0; volume_biggest_sells = 0.0;

   for(int i=PositionsTotal()-1;i>=0;i--)

      if(m_position.SelectByIndex(i)) // selects the position by index for further access to its properties

         if(m_position.Symbol()==m_symbol.Name() && m_position.Magic()==m_magic)

           {

            if(m_position.PositionType()==POSITION_TYPE_BUY)

              {

               count_buys++;

               volume_buys+=m_position.Volume();

               if(m_position.Volume()>volume_biggest_buys)

                  volume_biggest_buys=m_position.Volume();

               continue;

              }

            else if(m_position.PositionType()==POSITION_TYPE_SELL)

              {

               count_sells++;

               volume_sells+=m_position.Volume();

               if(m_position.Volume()>volume_biggest_sells)

                  volume_biggest_sells=m_position.Volume();

              }

           }

  }

//+------------------------------------------------------------------+

//| Calculation Net Price                                            |

//+------------------------------------------------------------------+

void CalculationNetPrice(double &net_price_buy,double &net_price_sell)

  {

/*

   "Formula for \"Breakeven\" is provided Andrei Fandeev https://www.mql5.com/ru/users/andreifan"

   "in: https://www.mql5.com/ru/forum/220911/page2#comment_6105972"

*/

   double total_price_multiply_volume_buy    = 0.0;

   double total_volume_buy                   = 0.0;

   net_price_buy                             = 0.0;



   double total_price_multiply_volume_sell   = 0.0;

   double total_volume_sell                  = 0.0;

   net_price_sell                            = 0.0;



   int total=PositionsTotal();

   for(int i=total-1;i>=0;i--)

     {

      if(!m_position.SelectByIndex(i)) // selects the position by index for further access to its properties

         break;

      if(m_position.Symbol()==m_symbol.Name())

        {

         if(m_position.PositionType()==POSITION_TYPE_BUY)

           {

            total_price_multiply_volume_buy+=m_position.PriceOpen()*m_position.Volume();

            total_volume_buy+=m_position.Volume();

           }

         else

           {

            total_price_multiply_volume_sell+=m_position.PriceOpen()*m_position.Volume();

            total_volume_sell+=m_position.Volume();

           }

        }

     }

//---

   if(total_volume_buy-total_volume_sell==0)

     {

      return;

     }

   if(total_price_multiply_volume_buy!=0 && total_volume_buy!=0)

     {

      net_price_buy=total_price_multiply_volume_buy/total_volume_buy;

      return;

     }

   if(total_price_multiply_volume_sell!=0 && total_volume_sell!=0)

     {

      net_price_sell=total_price_multiply_volume_sell/total_volume_sell;

      return;

     }

//---

   return;

  }

//+------------------------------------------------------------------+

//| Close all positions                                              |

//+------------------------------------------------------------------+

void CloseAllPositions(void)

  {

   for(int i=PositionsTotal()-1;i>=0;i--) // returns the number of current positions

      if(m_position.SelectByIndex(i))     // selects the position by index for further access to its properties

         if(m_position.Symbol()==m_symbol.Name() && m_position.Magic()==m_magic)

            m_trade.PositionClose(m_position.Ticket()); // close a position by the specified symbol

  }

//+------------------------------------------------------------------+

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