Return Strategy

ÿþ//+------------------------------------------------------------------+

//|                     Return Strategy(barabashkakvn's edition).mq5 |

//|                                Copyright © 2011, AM2 && Tiburond |

//|                                      http://www.forexsystems.biz |

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

#property copyright "Copyright © 2011, AM2 && Tiburond"

#property link      "http://www.forexsystems.biz"

#property version   "1.000"

//---

#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;

//--- input parameters

input ushort   InpStopLoss       = 1300;     // Stop Loss (in pips)

input uchar    InpStartHour      = 21;       // Start Hour

input uchar    InpEndHour        = 2;        // End Hour

input ushort   InpTotalProfit    = 100;      // Total profit (in pips)

input ushort   InpTrailingStop   = 5;        // Trailing Stop (in pips)

input ushort   InpTrailingStep   = 5;        // Trailing Step (in pips)

input ushort   InpDistance       = 25;       // Distance

input ushort   InpStep           = 5;        // Step

input int      InpCount          = 4;        // Number of pending orders

input uchar    InpExpiration     = 4;        // Expiration (in hours)

input double   InpLots           = 0;        // Lots (or "Lots">0 and "Risk"==0 or "Lots"==0 and "Risk">0)

input double   Risk              = 5;        // Risk (or "Lots">0 and "Risk"==0 or "Lots"==0 and "Risk">0)

input ulong    m_magic           = 91268883; // magic number

//---

ulong          m_slippage=10;                // slippage



double         ExtStopLoss=0.0;

double         ExtTotalProfit=0.0;

double         ExtTrailingStop=0.0;

double         ExtTrailingStep=0.0;

double         ExtDistance=0.0;

double         ExtStep=0.0;



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



bool           bln_close_all=false;

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

//| Expert initialization function                                   |

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

int OnInit()

  {

   if(InpStartHour>23)

     {

      string text=(TerminalInfoString(TERMINAL_LANGUAGE)=="Russian")?

                  "0@0<5B@ \"Start Hour\" =5 <>65B 1KBL 1>;LH5 23 G0A>2!":

                  "Parameter \"Start Hour\" can not be more than 23 hours!";

      Alert(__FUNCTION__," ERROR! ",text);

      return(INIT_PARAMETERS_INCORRECT);

     }

   if(InpEndHour>23)

     {

      string text=(TerminalInfoString(TERMINAL_LANGUAGE)=="Russian")?

                  "0@0<5B@ \"End Hour\" =5 <>65B 1KBL 1>;LH5 23 G0A>2!":

                  "Parameter \"End Hour\" can not be more than 23 hours!";

      Alert(__FUNCTION__," ERROR! ",text);

      return(INIT_PARAMETERS_INCORRECT);

     }

//---

   if(InpTrailingStop!=0 && InpTrailingStep==0)

     {

      string text=(TerminalInfoString(TERMINAL_LANGUAGE)=="Russian")?

                  ""@59;8=3 =52>7<>65=: ?0@0<5B@ \"Trailing Step\" @025= =C;N!":

                  "Trailing is not possible: parameter \"Trailing Step\" is zero!";

      Alert(__FUNCTION__," ERROR! ",text);

      return(INIT_PARAMETERS_INCORRECT);

     }

   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;



   ExtStopLoss       = InpStopLoss     * m_adjusted_point;

   ExtTotalProfit    = InpTotalProfit  * m_adjusted_point;

   ExtTrailingStop   = InpTrailingStop * m_adjusted_point;

   ExtTrailingStep   = InpTrailingStep * m_adjusted_point;

   ExtDistance       = InpDistance     * m_adjusted_point;

   ExtStep           = InpStep         * m_adjusted_point;

//---

   if(!LotsOrRisk(InpLots,Risk,digits_adjust))

      return(INIT_PARAMETERS_INCORRECT);

//---

   if(m_money!=NULL)

      delete m_money;

   m_money=new CMoneyFixedMargin;

   if(m_money!=NULL)

     {

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

         return(INIT_FAILED);

      m_money.Percent(Risk);

     }

   else

     {

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

      return(INIT_FAILED);

     }

//---

   bln_close_all=false;

//---

   return(INIT_SUCCEEDED);

  }

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

//| Expert deinitialization function                                 |

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

void OnDeinit(const int reason)

  {

//---

   if(m_money!=NULL)

      delete m_money;

  }

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

//| Expert tick function                                             |

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

void OnTick()

  {

   if(bln_close_all)

     {

      bool position_exists       = IsPositionExists();

      bool pending_orders_exists = IsPendingOrdersExists();

      if(position_exists)

         CloseAllPositions();

      if(pending_orders_exists)

         DeleteAllPendingOrders();

      //---

      if(!position_exists && !pending_orders_exists)

         bln_close_all=false;

      else

         return;

     }

//---

   Trailing();

//---

   if(CalculateTotalProfit()>=ExtTotalProfit)

     {

      bln_close_all=true;

      return;

     }

//---

   MqlDateTime STimeCurrent;

   TimeToStruct(TimeCurrent(),STimeCurrent);

   if(STimeCurrent.hour==InpEndHour || STimeCurrent.day_of_week==5)

     {

      bln_close_all=true;

      return;

     }

//---

   if(STimeCurrent.hour==InpStartHour && !IsPendingOrdersExists())

     {

      if(!RefreshRates())

         return;

      PendingBuyLimit(0.0,0.0);

      PendingSellLimit(0.0,0.0);

     }

//---

  }

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

//| TradeTransaction function                                        |

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

void OnTradeTransaction(const MqlTradeTransaction &trans,

                        const MqlTradeRequest &request,

                        const MqlTradeResult &result)

  {

//---



  }

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

//| 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);

  }

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

//| Lots or risk in percent for a deal from a free margin            |

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

bool LotsOrRisk(const double lots,const double risk,const int digits_adjust)

  {

   if(lots<0.0 && risk<0.0)

     {

      Print(__FUNCTION__,", ERROR: Parameter (\"lots\" or \"risk\") can't be less than zero");

      return(false);

     }

   if(lots==0.0 && risk==0.0)

     {

      Print(__FUNCTION__,", ERROR: Trade is impossible: You have set \"lots\" == 0.0 and \"risk\" == 0.0");

      return(false);

     }

   if(lots>0.0 && risk>0.0)

     {

      Print(__FUNCTION__,", ERROR: Trade is impossible: You have set \"lots\" > 0.0 and \"risk\" > 0.0");

      return(false);

     }

   if(lots>0.0)

     {

      string err_text="";

      if(!CheckVolumeValue(lots,err_text))

        {

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

         return(false);

        }

     }

   else if(risk>0.0)

     {

      if(m_money!=NULL)

         delete m_money;

      m_money=new CMoneyFixedMargin;

      if(m_money!=NULL)

        {

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

            return(INIT_FAILED);

         m_money.Percent(risk);

        }

      else

        {

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

         return(INIT_FAILED);

        }

     }

//---

   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);

  }

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

//| Pending orders of Buy Limit                                      |

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

void PendingBuyLimit(double sl,double tp)

  {

   sl=m_symbol.NormalizePrice(sl);

   tp=m_symbol.NormalizePrice(tp);



   double check_open_long_lot=0.0;

   if(Risk>0.0)

     {

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

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

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

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

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

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

      if(check_open_long_lot==0.0)

        {

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

         return;

        }

     }

   else

      check_open_long_lot=InpLots;

   double lot_count=LotCheck(check_open_long_lot*(double)InpCount);

   if(lot_count==0.0)

     {

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

      return;

     }

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

   double check_volume_lot=m_trade.CheckVolume(m_symbol.Name(),lot_count,m_symbol.Ask(),ORDER_TYPE_BUY);



   if(check_volume_lot!=0.0)

     {

      if(check_volume_lot>=lot_count)

        {

         double   open=iOpen(m_symbol.Name(),Period(),0);

         datetime time=TimeCurrent()+InpExpiration*3600;

         for(int i=0;i<InpCount;i++)

           {

            double price=m_symbol.Ask()-ExtDistance-((double)i+1)*ExtStep;



            if(m_trade.BuyLimit(check_open_long_lot,m_symbol.NormalizePrice(price),

               m_symbol.Name(),m_symbol.NormalizePrice(price-ExtStopLoss),

               open,ORDER_TIME_SPECIFIED,time))

              {

               if(m_trade.ResultOrder()==0)

                 {

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

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

                  PrintResultTrade(m_trade,m_symbol);

                 }

               else

                 {

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

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

                  PrintResultTrade(m_trade,m_symbol);

                 }

              }

            else

              {

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

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

               PrintResultTrade(m_trade,m_symbol);

              }

           }

        }

      else

        {

         string text="< ("+DoubleToString(lot_count,2)+")";

         Print(__FUNCTION__,", ERROR: method CheckVolume (",DoubleToString(check_volume_lot,2),") ",

               text);

         return;

        }

     }

   else

     {

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

      return;

     }

//---

  }

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

//| Pending orders of Sell Limit                                     |

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

void PendingSellLimit(double sl,double tp)

  {

   sl=m_symbol.NormalizePrice(sl);

   tp=m_symbol.NormalizePrice(tp);



   double check_open_short_lot=0.0;

   if(Risk>0.0)

     {

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

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

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

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

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

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

      if(check_open_short_lot==0.0)

        {

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

         return;

        }

     }

   else

      check_open_short_lot=InpLots;

   double lot_count=LotCheck(check_open_short_lot*(double)InpCount);

   if(lot_count==0.0)

     {

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

      return;

     }

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

   double check_volume_lot=m_trade.CheckVolume(m_symbol.Name(),lot_count,m_symbol.Bid(),ORDER_TYPE_SELL);



   if(check_volume_lot!=0.0)

     {

      if(check_volume_lot>=lot_count)

        {

         double   open=iOpen(m_symbol.Name(),Period(),0);

         datetime time=TimeCurrent()+InpExpiration*3600;

         for(int i=0;i<InpCount;i++)

           {

            double price=m_symbol.Bid()+ExtDistance+((double)i+1)*ExtStep;



            if(m_trade.SellLimit(check_open_short_lot,m_symbol.NormalizePrice(price),

               m_symbol.Name(),m_symbol.NormalizePrice(price+ExtStopLoss),

               open,ORDER_TIME_SPECIFIED,time))

              {

               if(m_trade.ResultOrder()==0)

                 {

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

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

                  PrintResultTrade(m_trade,m_symbol);

                 }

               else

                 {

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

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

                  PrintResultTrade(m_trade,m_symbol);

                 }

              }

            else

              {

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

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

               PrintResultTrade(m_trade,m_symbol);

              }

           }

        }

      else

        {

         string text="< ("+DoubleToString(lot_count,2)+")";

         Print(__FUNCTION__,", ERROR: method CheckVolume (",DoubleToString(check_volume_lot,2),") ",

               text);

         return;

        }

     }

   else

     {

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

      return;

     }

//---

  }

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

//| Print CTrade result                                              |

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

void PrintResultTrade(CTrade &trade,CSymbolInfo &symbol)

  {

   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());

  }

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

//| Trailing                                                         |

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

void Trailing()

  {

   if(InpTrailingStop==0)

      return;

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

      if(m_position.SelectByIndex(i))

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

           {

            if(m_position.PositionType()==POSITION_TYPE_BUY)

              {

               if(m_position.PriceCurrent()-m_position.PriceOpen()>ExtTrailingStop+ExtTrailingStep)

                  if(m_position.StopLoss()<m_position.PriceCurrent()-(ExtTrailingStop+ExtTrailingStep))

                    {

                     if(!m_trade.PositionModify(m_position.Ticket(),

                        m_symbol.NormalizePrice(m_position.PriceCurrent()-ExtTrailingStop),

                        m_position.TakeProfit()))

                        Print("Modify ",m_position.Ticket(),

                              " Position -> false. Result Retcode: ",m_trade.ResultRetcode(),

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

                     RefreshRates();

                     m_position.SelectByIndex(i);

                     PrintResultModify(m_trade,m_symbol,m_position);

                     continue;

                    }

              }

            else

              {

               if(m_position.PriceOpen()-m_position.PriceCurrent()>ExtTrailingStop+ExtTrailingStep)

                  if((m_position.StopLoss()>(m_position.PriceCurrent()+(ExtTrailingStop+ExtTrailingStep))) || 

                     (m_position.StopLoss()==0))

                    {

                     if(!m_trade.PositionModify(m_position.Ticket(),

                        m_symbol.NormalizePrice(m_position.PriceCurrent()+ExtTrailingStop),

                        m_position.TakeProfit()))

                        Print("Modify ",m_position.Ticket(),

                              " Position -> false. Result Retcode: ",m_trade.ResultRetcode(),

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

                     RefreshRates();

                     m_position.SelectByIndex(i);

                     PrintResultModify(m_trade,m_symbol,m_position);

                    }

              }



           }

  }

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

//| Print CTrade result                                              |

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

void PrintResultModify(CTrade &trade,CSymbolInfo &symbol,CPositionInfo &position)

  {

   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());

   Print("Price of position opening: "+DoubleToString(position.PriceOpen(),symbol.Digits()));

   Print("Price of position's Stop Loss: "+DoubleToString(position.StopLoss(),symbol.Digits()));

   Print("Price of position's Take Profit: "+DoubleToString(position.TakeProfit(),symbol.Digits()));

   Print("Current price by position: "+DoubleToString(position.PriceCurrent(),symbol.Digits()));

  }

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

//| Calculate total profit                                           |

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

double CalculateTotalProfit()

  {

   double tota_profit=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)

               tota_profit+=m_position.PriceCurrent()-m_position.PriceOpen();

            if(m_position.PositionType()==POSITION_TYPE_SELL)

               tota_profit+=m_position.PriceOpen()-m_position.PriceCurrent();

           }

//---

   return(tota_profit);

  }

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

//| Close all positions                                              |

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

void CloseAllPositions()

  {

   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

  }

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

//| Delete all pending orders                                        |

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

void DeleteAllPendingOrders(void)

  {

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

      if(m_order.SelectByIndex(i))     // selects the pending order by index for further access to its properties

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

            m_trade.OrderDelete(m_order.Ticket());

  }

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

//| Is position exists                                               |

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

bool IsPositionExists(void)

  {

   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)

            return(true);

//---

   return(false);

  }

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

//| Is pendinf orders exists                                         |

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

bool IsPendingOrdersExists(void)

  {

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

      if(m_order.SelectByIndex(i))     // selects the pending order by index for further access to its properties

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

            return(true);

//---

   return(false);

  }

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

//| Lot Check                                                        |

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

double LotCheck(double lots)

  {

//--- calculate maximum volume

   double volume=NormalizeDouble(lots,2);

   double stepvol=m_symbol.LotsStep();

   if(stepvol>0.0)

      volume=stepvol*MathFloor(volume/stepvol);

//---

   double minvol=m_symbol.LotsMin();

   if(volume<minvol)

      volume=0.0;

//---

   double maxvol=m_symbol.LotsMax();

   if(volume>maxvol)

      volume=maxvol;

   return(volume);

  }

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