FUERTES: Para ayudar a los principiantes - página 2

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Михаил:

Entonces, eres el primer aspirante al título de "Mejor Codificador de Pupua 2015".

P/S Por favor, no se caiga de la silla de la risa :)

Enfádate, enfádate si no pudiste descifrar cuatro líneas de código (a propósito cuatro en lugar de dos para que sea más fácil de entender)

¿Cuál es el problema? No está claro cuál es el número 86400. ¿O 3600?

86400 es un número de segundos en un día. 3600 - en una hora.

ps. ¿Qué clase de risa es esa? Tienes que llorar aquí.

 

Funciones útiles y de uso frecuente:

La función SetStDayTime() no funcionaba muy rápido, así que

Voy a publicar uno rediseñado (gracias a Sergei):

datetime SetStDayTime()
{
  MqlDateTime  dt_str;
  ulong one_day = 86400;
  TimeTradeServer( dt_str );
  int hour = dt_str.hour;
  dt_str.hour = 19;
  dt_str.min = 0;
  dt_str.sec = 0;
  ulong time_start = ulong( StructToTime( dt_str ) );
//---   
  switch( dt_str.day_of_week )
  {
    case 6:  time_start -= one_day;
             break;
    case 0:  time_start -= one_day * 2;
             break;
    case 1:  if ( hour < 19 ) time_start -= one_day * 3;
             break;
    default: if ( hour < 19 ) time_start -= one_day;
             break;
  }
  return( datetime( time_start ) );
}
 

Características:

Recepción de la confirmación (TRADE_RETCODE_PLACED ) en el código de retorno de OrderSend() y en el ticket de pedido,

if ( OrderSend( request, result ) )
{
  if ( result.retcode == TRADE_RETCODE_PLACED )
  { 
    ticket = result.order;
  }
}

y para la función OrderSendAsync() en OnTradeTransaction(), esto no significa en absoluto que

el pedido está realmente EXPUESTO a un intercambio.

Por lo tanto, se necesita una comprobación adicional del estado del pedido (al igual que para otras acciones en el pedido).

enum ENUM_ORD_REAL_STATE
{
  ORD_NOT_SPECIFIED         = 0, //Состояние ордера не определено
  ORD_NONE_CANCELED         = 1, //Ордера нет, отменён пользователем
  ORD_NONE_PARTIAL_CANCELED = 2, //Ордера нет, исполнился частично (не был залит вторым объёмом)
  ORD_NONE_PARTIAL          = 3, //Ордера нет, исполнился частично
  ORD_NONE_EXPIRED          = 4, //Ордера нет, удалён по сроку
  ORD_NONE_FILLED           = 5, //Ордера нет, исполнился полностью
  ORD_NONE_REJECTED         = 6, //Ордера нет, отклонён брокером(биржей)
  ORD_BUSY                  = 7, //Ордер находится в переходном состоянии
  ORD_EXIST                 = 8, //Ордер выставлен на биржу, возможны действия над ним
  ORD_EXIST_PARTIAL         = 9  //Ордер выставлен на биржу, частично исполнился, возможны действия над ним
};
//
ENUM_ORD_REAL_STATE CheckOrderState( const ulong ticket )
{
  if ( ticket > 0 )
  {
    if ( HistoryOrderSelect( ticket ) ) //Только не существующий ордер может находится в истории
    {
      ENUM_ORDER_STATE ord_state = ENUM_ORDER_STATE( HistoryOrderGetInteger( ticket, ORDER_STATE ) );
      double init_volume = HistoryOrderGetDouble( ticket, ORDER_VOLUME_INITIAL );
      double cur_volume = HistoryOrderGetDouble( ticket, ORDER_VOLUME_CURRENT );
//---      
      switch( ord_state )
      {
                                                           
        case ORDER_STATE_CANCELED:       if ( init_volume == init_volume )
                                         {
                                           return( ORD_NONE_CANCELED );
                                         }
                                         else
                                         {
                                           return( ORD_NONE_PARTIAL_CANCELED );
                                         }  
                                         break;
                                         
        case ORDER_STATE_PARTIAL:        return( ORD_NONE_PARTIAL );
                                         break;
                                         
        case ORDER_STATE_EXPIRED:        return( ORD_NONE_EXPIRED );
                                         break;
                                                                              
        case ORDER_STATE_FILLED:         return( ORD_NONE_FILLED );
                                         break;
                                         
        case ORDER_STATE_REJECTED:       return( ORD_NONE_REJECTED );
                                         break;   
 
       
      }
    }
    else
    if ( OrderSelect( ticket ) ) 
    {
      ENUM_ORDER_STATE ord_state = ENUM_ORDER_STATE( OrderGetInteger( ORDER_STATE ) );
//---      
      switch( ord_state )
      {
        case ORDER_STATE_STARTED:
        case ORDER_STATE_REQUEST_ADD:
        case ORDER_STATE_REQUEST_MODIFY:
        case ORDER_STATE_REQUEST_CANCEL: return( ORD_BUSY );
                                         break; 
 
        case ORDER_STATE_PARTIAL:        return( ORD_EXIST_PARTIAL );
                                         break;
                                          
        case ORDER_STATE_PLACED:         return( ORD_EXIST );
                                         break;
      }
    }
  }
  return( ORD_NOT_SPECIFIED );
}
 

Hay una errata enCheckOrderState().

En lugar deinit_volume == init_volume

debería serinit_volume == cur_volume

 

Funciones útiles y de uso frecuente:

Se ha rediseñadoCheckOrderState() para que se llame OrderRealSelect() con la opción de no obtener/recibir datos sobre el pedido

#define  ERR_ZERO_TICKET -1
//
enum ENUM_ORD_REAL_STATE
{
  ORD_NOT_SPECIFIED         = 0, //Состояние ордера не определено
  ORD_NONE_CANCELED         = 1, //Ордера нет, отменён пользователем
  ORD_NONE_PARTIAL_CANCELED = 2, //Ордера нет, исполнился частично (не был залит вторым объёмом)
  ORD_NONE_PARTIAL          = 3, //Ордера нет, исполнился частично
  ORD_NONE_EXPIRED          = 4, //Ордера нет, удалён по сроку
  ORD_NONE_FILLED           = 5, //Ордера нет, исполнился полностью
  ORD_NONE_REJECTED         = 6, //Ордера нет, отклонён брокером(биржей)
  ORD_BUSY                  = 7, //Ордер находится в переходном состоянии
  ORD_EXIST                 = 8, //Ордер выставлен на биржу, возможны действия над ним
  ORD_EXIST_PARTIAL         = 9  //Ордер выставлен на биржу, частично исполнился, возможны действия над ним
};
enum ENUM_ORD_SELECT
{
  SELECT_ERROR = 0,
  SELECT_FALSE = 1,
  SELECT_TRUE  = 2,
  SELECT_BUSY  = 3
};
//
struct ORDER_DATA
{
  int                     error_code;
  datetime                time_setup;
  ENUM_ORDER_TYPE         type;
  ENUM_ORDER_STATE        state;
  ENUM_ORD_REAL_STATE     real_state;
  datetime                expiration;
  datetime                time_done;
  long                    t_set_msc;
  long                    t_done_msc; 
  ENUM_ORDER_TYPE_FILLING type_filling;
  ENUM_ORDER_TYPE_TIME    type_time;
  long                    magic;
  long                    pos_id;
  double                  vol_init;
  double                  vol_cur;
  double                  price_open;
  double                  sl;
  double                  tp;
  double                  price_cur;
  double                  price_stlim;
  string                  symbol;
  string                  comment;      
};
//
//+------------------------------------------------------------------+
// Expert Order Real Select function                                 |
//+------------------------------------------------------------------+
ENUM_ORD_SELECT OrderRealSelect( const ulong ticket, ORDER_DATA &ord_data, const bool get_data )
{
  double init_vol = 0;
  double cur_vol = 0;
  ZeroMemory( ord_data );
  ord_data.real_state = ORD_NOT_SPECIFIED;
  ord_data.error_code = ERR_SUCCESS;
  ResetLastError();
//---  
  if ( ticket > 0 )
  {
    if ( HistoryOrderSelect( ticket ) )
    {
      if ( get_data )
      {
        ord_data.comment = HistoryOrderGetString( ticket, ORDER_COMMENT );
        ord_data.expiration = datetime( HistoryOrderGetInteger( ticket, ORDER_TIME_EXPIRATION ) ); 
        ord_data.magic = HistoryOrderGetInteger( ticket, ORDER_MAGIC );
        ord_data.pos_id = HistoryOrderGetInteger( ticket, ORDER_POSITION_ID );
        ord_data.price_cur = HistoryOrderGetDouble( ticket, ORDER_PRICE_CURRENT );
        ord_data.price_open = HistoryOrderGetDouble( ticket, ORDER_PRICE_OPEN );
        ord_data.price_stlim = HistoryOrderGetDouble( ticket, ORDER_PRICE_STOPLIMIT );
        ord_data.sl = HistoryOrderGetDouble( ticket, ORDER_SL );
        ord_data.state = ENUM_ORDER_STATE( HistoryOrderGetInteger( ticket, ORDER_STATE ) );
        ord_data.symbol = HistoryOrderGetString( ticket, ORDER_SYMBOL );
        ord_data.t_done_msc = datetime( HistoryOrderGetInteger( ticket, ORDER_TIME_DONE_MSC ) );
        ord_data.t_set_msc = datetime( HistoryOrderGetInteger( ticket, ORDER_TIME_SETUP_MSC ) );
        ord_data.time_done = datetime( HistoryOrderGetInteger( ticket, ORDER_TIME_DONE ) );
        ord_data.time_setup = datetime( HistoryOrderGetInteger( ticket, ORDER_TIME_SETUP ) );
        ord_data.tp = HistoryOrderGetDouble( ticket, ORDER_TP );
        ord_data.type = ENUM_ORDER_TYPE( HistoryOrderGetInteger( ticket, ORDER_TYPE ) );
        ord_data.type_filling = ENUM_ORDER_TYPE_FILLING( HistoryOrderGetInteger( ticket, ORDER_TYPE_FILLING ) );
        ord_data.type_time = ENUM_ORDER_TYPE_TIME( HistoryOrderGetInteger( ticket, ORDER_TYPE_TIME ) );
        ord_data.vol_cur = HistoryOrderGetDouble( ticket, ORDER_VOLUME_CURRENT );
        ord_data.vol_init = HistoryOrderGetDouble( ticket, ORDER_VOLUME_INITIAL );
      }
      else
      {
        ord_data.state = ENUM_ORDER_STATE( HistoryOrderGetInteger( ticket, ORDER_STATE ) );
        cur_vol = HistoryOrderGetDouble( ticket, ORDER_VOLUME_CURRENT );
        init_vol = HistoryOrderGetDouble( ticket, ORDER_VOLUME_INITIAL );
      }   
//---
      switch( ord_data.state )
      { 
        case ORDER_STATE_CANCELED: if ( get_data )
                                   {
                                     if ( ord_data.vol_init == ord_data.vol_cur )
                                     {
                                       ord_data.real_state = ORD_NONE_CANCELED;
                                     }
                                     else
                                     {
                                       ord_data.real_state = ORD_NONE_PARTIAL_CANCELED;
                                     }
                                   }
                                   else
                                   {
                                     if ( init_vol == cur_vol )
                                     {
                                       ord_data.real_state = ORD_NONE_CANCELED;
                                     }
                                     else
                                     {
                                       ord_data.real_state = ORD_NONE_PARTIAL_CANCELED;
                                     }
                                   }    
                                   break;
                                        
        case ORDER_STATE_PARTIAL:  ord_data.real_state = ORD_NONE_PARTIAL;
                                   break;
                                         
        case ORDER_STATE_EXPIRED:  ord_data.real_state = ORD_NONE_EXPIRED;
                                   break;
                                                                              
        case ORDER_STATE_FILLED:   ord_data.real_state = ORD_NONE_FILLED;
                                   break;
                                         
        case ORDER_STATE_REJECTED: ord_data.real_state = ORD_NONE_REJECTED;
                                   break;  
      }
    }
    else
    if ( OrderSelect( ticket ) )
    {
      if ( get_data )
      {
        ord_data.comment = OrderGetString( ORDER_COMMENT );
        ord_data.expiration = datetime( OrderGetInteger( ORDER_TIME_EXPIRATION ) ); 
        ord_data.magic = OrderGetInteger( ORDER_MAGIC );
        ord_data.pos_id = OrderGetInteger( ORDER_POSITION_ID );
        ord_data.price_cur = OrderGetDouble( ORDER_PRICE_CURRENT );
        ord_data.price_open = OrderGetDouble( ORDER_PRICE_OPEN );
        ord_data.price_stlim = OrderGetDouble( ORDER_PRICE_STOPLIMIT );
        ord_data.sl = OrderGetDouble( ORDER_SL );
        ord_data.state = ENUM_ORDER_STATE( OrderGetInteger( ORDER_STATE ) );
        ord_data.symbol = OrderGetString( ORDER_SYMBOL );
        ord_data.t_done_msc = datetime( OrderGetInteger( ORDER_TIME_DONE_MSC ) );
        ord_data.t_set_msc = datetime( OrderGetInteger( ORDER_TIME_SETUP_MSC ) );
        ord_data.time_done = datetime( OrderGetInteger( ORDER_TIME_DONE ) );
        ord_data.time_setup = datetime( OrderGetInteger( ORDER_TIME_SETUP ) );
        ord_data.tp = OrderGetDouble( ORDER_TP );
        ord_data.type = ENUM_ORDER_TYPE( OrderGetInteger( ORDER_TYPE ) );
        ord_data.type_filling = ENUM_ORDER_TYPE_FILLING( OrderGetInteger( ORDER_TYPE_FILLING ) );
        ord_data.type_time = ENUM_ORDER_TYPE_TIME( OrderGetInteger( ORDER_TYPE_TIME ) );
        ord_data.vol_cur = OrderGetDouble( ORDER_VOLUME_CURRENT );
        ord_data.vol_init = OrderGetDouble( ORDER_VOLUME_INITIAL );
      }
      else
      {
        ord_data.state = ENUM_ORDER_STATE( OrderGetInteger( ORDER_STATE ) );
      }
//--- 
      switch( ord_data.state )
      { 
        case ORDER_STATE_STARTED:
        case ORDER_STATE_REQUEST_ADD:
        case ORDER_STATE_REQUEST_MODIFY:
        case ORDER_STATE_REQUEST_CANCEL: ord_data.real_state = ORD_BUSY;
                                         break; 
 
        case ORDER_STATE_PARTIAL:        ord_data.real_state = ORD_EXIST_PARTIAL;
                                         break;
                                          
        case ORDER_STATE_PLACED:         ord_data.real_state = ORD_EXIST;
                                         break;
      }
    }
    else
    {
      ord_data.error_code = GetLastError();
    }  
//---   
    if ( ( ord_data.error_code != ERR_SUCCESS ) ||
       ( ord_data.real_state == ORD_NOT_SPECIFIED ) )
    {
      return( SELECT_ERROR );
    }
    else
    {
      switch( ord_data.real_state )
      {
        case ORD_BUSY:          return( SELECT_BUSY );
                                break;
                        
        case ORD_EXIST:   
        case ORD_EXIST_PARTIAL: return( SELECT_TRUE );
                                break;
                              
        default:                return( SELECT_FALSE );
                                break;                                             
      }
    }
  } 
  else
  {
    ord_data.error_code = ERR_ZERO_TICKET; 
    return( SELECT_ERROR );
  }
}


Si queremos modificar o eliminar una orden, sólo necesitamos saber que existe:

ORDER_DATA order_data;
  ulong a_ticket = 12345;
//---
  if ( OrderRealSelect( a_ticket, order_data, false ) == SELECT_TRUE )
  {
    //Удаляем или модифицируем ордер ( false - не получаем данные по ордеру)
  }

Si, después de borrar, necesitamos obtener datos sobre el pedido, entonces:

ORDER_DATA order_data;
  ulong a_ticket = 12345;
//---
  if ( OrderRealSelect( a_ticket, order_data, true ) == SELECT_FALSE )
  {
    a_ticket = 0;
    //Смотрим данные по ордеру в order_data    
  }

En caso de error:

ORDER_DATA order_data;
  ulong a_ticket = 12345;
//---
  if ( OrderRealSelect( a_ticket, order_data, true ) == SELECT_ERROR )
  {
    //Не важно, запрашивали мы данные по ордеру (true) или нет(false) коды ошибки 
    //будут всегда
    switch( order_data.error_code )
    {
      //.................................
    }    
  }
 

Funciones útiles y de uso frecuente:

Conjunto de funciones rediseñadas para el recuento de transacciones ineficientes:

//+------------------------------------------------------------------+
//|                                                     Tr_count.mq5 |
//|                                          Copyright 2015, Mikalas |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2015, Mikalas"
#property link      "https://www.mql5.com"
#property version   "1.00"
//
input double  TrPoint   = 1;    //Балл за транзакцию
input ulong   DealPoint = 40;   //Балл за сделку
input double  NotEff    = 1970; //Неэффективных транзакций 
//
bool set_error;
//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
{
  set_error = false;
//---  
  if ( !GlobalVariableCheck( "trans_count" ) )
  {
    datetime a_time = GlobalVariableSet( "trans_count", 0 );
    
    if ( ulong( a_time ) == 0 )
    {
      MessageBox( "Глобальная переменная терминала 'Счётчик транзакций' не создана!", "Ошибка", MB_OK | MB_ICONHAND );
      return( INIT_FAILED );
    }
  }
//---
  if ( !GlobalVariableCheck( "not_eff_cnt" ) )
  {
    datetime a_time = GlobalVariableSet( "not_eff_cnt", 0 );
    
    if ( ulong( a_time ) == 0 )
    {
      MessageBox( "Глобальная переменная терминала 'Счётчик неэффективных транзакций' не создана!", "Ошибка", MB_OK | MB_ICONHAND );
      return( INIT_FAILED );
    }
  }
  else
  {
    datetime acs_time = GlobalVariableTime( "not_eff_cnt" );
    datetime cur_time = TimeTradeServer();
    if ( ( ulong( cur_time ) - ulong( acs_time ) ) > 7200 )
    {
      if ( MessageBox( "Последняя запись в Счётчик неэффективных транзакций\n была произведена " + TimeToString( acs_time ) +
      ". Нажмите 'OK' для\n обнуления переменных, или 'Cancel' для продолжения.", "Внимание", MB_OKCANCEL | MB_ICONQUESTION ) == IDOK )
      {
        GlobalVariableSet( "trans_count", 0 );
        GlobalVariableSet( "not_eff_cnt", 0 );
      }
    }
  } 
  return( INIT_SUCCEEDED ); 
}
//+------------------------------------------------------------------+
//| Expert Set start day time function                               |
//+------------------------------------------------------------------+
datetime SetStDayTime()
{
  MqlDateTime  dt_str;
  ulong one_day = 86400;
  TimeTradeServer( dt_str );
  int hour = dt_str.hour;
  dt_str.hour = 19;
  dt_str.min = 0;
  dt_str.sec = 0;
  ulong time_start = ulong( StructToTime( dt_str ) );
//---   
  switch( dt_str.day_of_week )
  {
    case 6:  time_start -= one_day;
             break;
    case 0:  time_start -= one_day * 2;
             break;
    case 1:  if ( hour < 19 ) time_start -= one_day * 3;
             break;
    default: if ( hour < 19 ) time_start -= one_day;
             break;
  }
  return( datetime( time_start ) );
}
//+------------------------------------------------------------------+
//| Expert calc deals fee function                                   |
//+------------------------------------------------------------------+
double GetExgangeFee( const datetime start_time )
{
  double all_fee = 0.0;
  ulong deal_ticket;
//---  
  if ( HistorySelect( start_time, TimeTradeServer() ) )
  {
    int deals_total = HistoryDealsTotal();
//---   
    if ( deals_total > 0 )
    {
      for ( uint i = 0; i < uint( deals_total ); i++ )
      {
        deal_ticket = HistoryDealGetTicket( i );
//---        
        if ( deal_ticket > 0 )
        {
          ulong order_ticket = ulong( HistoryDealGetInteger( deal_ticket, DEAL_ORDER ) );
          
          if ( order_ticket > 0 )
          {
            all_fee += HistoryDealGetDouble( deal_ticket, DEAL_COMMISSION );
          }  
        }
      }
      return( MathAbs( all_fee ) );
    }  
  }
  return( 0 );
}
//+------------------------------------------------------------------+
//| Expert set not effective transactions function                   |
//+------------------------------------------------------------------+
void SetNotEffTrans( const double tr_cnt )
{
  double a_cnt = tr_cnt + 1;
  datetime start_time = SetStDayTime();
  double tr_bonus = GetExgangeFee( start_time );
  if ( NormalizeDouble( ( a_cnt * TrPoint - tr_bonus * DealPoint ), 0 ) > 0  )
  {
    double tr_count; 
    ulong i = 0;
    do
    {
      i++;
      if ( GlobalVariableGet( "not_eff_cnt", tr_count ) )
      {
        if ( GlobalVariableSetOnCondition( "not_eff_cnt", tr_count + 1, tr_count ) )
        {
          i = 100;
        }
      }
    }  
    while( i < 100 );
  }
}
//+------------------------------------------------------------------+
//| Expert Check limit transactions function                         |
//+------------------------------------------------------------------+
bool CheckLimitTrans()
{
  double a_count;
//---
  if ( GlobalVariableGet( "not_eff_cnt", a_count ) )
  {
    if ( a_count >= NotEff )
    {
      if ( !set_error )
      {
        set_error = true; //чтобы один раз выводилось
        Print( "Исчерпан лимит установки всех ордеров за торговый день!" );
      }
      return( false );
    }  
  }
  else
  {
    Print( "Не получено значение глобальной переменной 'not_eff_cnt'!" );
    return( false );
  }
  return( true );
}
//+------------------------------------------------------------------+
//| Expert Set transaction count function                            |
//+------------------------------------------------------------------+
void SetTransCount()
{
  double tr_count;
  uint i = 0;
  do
  {
    i++;
    if ( GlobalVariableGet( "trans_count", tr_count ) )
    {
      if ( GlobalVariableSetOnCondition( "trans_count", tr_count + 1, tr_count ) )
      {
        i = 100;
      }
    }
  }  
  while( i < 100 );
//---  
  SetNotEffTrans( tr_count );
}
//+------------------------------------------------------------------+
//| Expert Check trading time  function                              |
//+------------------------------------------------------------------+
void CheckResetTime()
{
  MqlDateTime trade_time;
  TimeTradeServer( trade_time );
//---
  if ( trade_time.hour == 18 )
  {
    if ( ( trade_time.min > 45 ) && ( trade_time.min <= 49 ) )  
    {
      GlobalVariableSet( "trans_count", 0 );
      GlobalVariableSet( "not_eff_cnt", 0 );
      set_error = false;
    }  
  }  
}
// По таймеру можно вызывать CheckResetTime(), чтобы в основной клиринг обнулить переменные
// Функция SetTransCount() вызвается после успешной отсылки ордера
// Функция CheckLimitTrans() вызвается перед каждой установкой ордера
 

Funcionesútiles y de uso frecuente:

Si queremos que la orden pendiente esté activa en algo más que el día actual, entonces

debe especificar en su solicitud (en este ejemplo, se especifica el día de caducidad)

(Gracias Sergey) Como resultó recientemente esta implementación funciona para los futuros actuales y los próximos.

¡NO funciona para futuros más largos!

int OnInit()
{
  exp_day = GetCutTime( aSymbol );
  return( INIT_SUCCEEDED );
}
//+------------------------------------------------------------------+
//| Expert Set expiration day function                              |
//+------------------------------------------------------------------+ 
datetime GetCutTime( const string t_symbol )
{
  MqlDateTime b_time;
  datetime a_time = datetime( SymbolInfoInteger( t_symbol, SYMBOL_EXPIRATION_TIME ) );
  TimeToStruct( a_time, b_time );
  b_time.hour = 0;
  b_time.min = 0;
  b_time.sec = 0;
  return( StructToTime( b_time ) );
} 

//--- При установке и модификации ордера
  request.type_time = ORDER_TIME_SPECIFIED_DAY;
  request.expiration = exp_day;
 

Funcionesútiles y de uso frecuente:

Escribir la configuración en un archivo:

//+------------------------------------------------------------------+
//| Expert Save settings function                                    |
//+------------------------------------------------------------------+
void SaveSettings()
{
  string file_name = _Symbol + ".dat";
  int file_handle;
  bool file_found = true;
//---  
  if ( FileIsExist( file_name, 0 ) )
  {
    if ( FileDelete( file_name, 0 ) ) file_found = false;
  }
  else
  {
    file_found = false;
  }
//---
  if ( !file_found )
  {
    file_handle = FileOpen( file_name, FILE_WRITE|FILE_BIN );
    
    if ( file_handle != INVALID_HANDLE )
    {
      FileWriteLong( file_handle, e_high );
      FileWriteLong( file_handle, a_profit );
      FileWriteLong( file_handle, e_low );
      FileWriteLong( file_handle, ord_delta_high );
      FileWriteLong( file_handle, ord_delta_low );
      FileWriteLong( file_handle, order_delta );
      FileWriteLong( file_handle, exit_delta );
      FileClose( file_handle );
    }
  } 
}

Lectura de la configuración desde un archivo:

//+------------------------------------------------------------------+
//| Expert Load setings function                                     |
//+------------------------------------------------------------------+
void LoadSettings()
{
  string file_name = _Symbol + ".dat";
  int file_handle;
//---  
  if ( FileIsExist( file_name, 0 ) )
  {
    file_handle = FileOpen( file_name, FILE_READ|FILE_BIN );
    
    if ( file_handle != INVALID_HANDLE )
    {
      e_high = FileReadLong( file_handle );
      a_profit = FileReadLong( file_handle );
      e_low = FileReadLong( file_handle );
      ord_delta_high = FileReadLong( file_handle );
      ord_delta_low = FileReadLong( file_handle );
      order_delta = FileReadLong( file_handle );
      exit_delta = FileReadLong( file_handle );
      FileClose( file_handle );
    }
  } 
}
 

Funciones útiles y de uso frecuente:

Vincular un EA a una cuenta:

//+------------------------------------------------------------------+
//| Expert Check Account owner function                              |
//+------------------------------------------------------------------+
bool ExpCheckUser()
{
  long acc_login = long ( AccountInfoInteger( ACCOUNT_LOGIN ) );
  string acc_user = AccountInfoString( ACCOUNT_NAME );
  
  if ( ( acc_login == 12345 ) && ( acc_user == "Михайлов Михаил Михайлович" ) )
  {
    return( true );
  }
  return( false ); 
}
 

Funcionesútiles y de uso frecuente:

Función para convertir los puntos en el precio de un instrumento:

double PointsToPrice( const long a_points )
{
  double step_price = SymbolInfoDouble( _Symbol, SYMBOL_TRADE_TICK_SIZE );
  double a_price = ( double( a_points ) * _Point ) / step_price;
  
  if ( a_points < 0 )
  {
    a_price = MathFloor( a_price ) * step_price;
  }
  else
  {
    a_price = MathCeil( a_price ) * step_price;
  }
  
  return( NormalizeDouble( a_price, _Digits ) );
}
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