外汇EA——基于均线的简单EA

上次写了一个简单的均线ea，在图标中同时显示SMA，WMA，EMA,今天写了一个基于SMA和EMA的简单ea，当然，想靠他盈利是不可能的，看代码吧

//+------------------------------------------------------------------+
//|                                                        ma_ea.mq4 |
//|                        Copyright 2014, MetaQuotes Software Corp. |
//|                                          http://coderaladdin.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2014, MetaQuotes Software Corp."
#property link      "http://coderaladdin.com"
#property version   "1.00"
#property strict

#define MAGIC_NUM 20150312

//--- input parameters
input int      period=19;
input int      max_orders=10;
input double      per_lot=0.01;
input double   risk_rate=0.1;

double calcLots() {
   double   lot=per_lot;   
   double minLot = MarketInfo(Symbol(),MODE_MINLOT);
   
   lot=NormalizeDouble(risk_rate*AccountFreeMargin()/AccountLeverage(),1);
   
   if(lot<0.1) lot=0.1;
   if(lot<minLot) lot=minLot;
   return(lot);
}

void CheckForOpen()
  {
   double ema;
   double sma;
   int    res;
//--- go trading only for first tiks of new bar
//   if(Volume[0]>1) return;
//--- get Moving Average 
    sma=iMA(NULL,0,period,0,MODE_SMA,PRICE_CLOSE,0);
    ema=iMA(NULL,0,period,0,MODE_EMA,PRICE_CLOSE,0);
   
//--- sell conditions
   if(Open[1]>ema && Open[1]>sma && ema<sma && Close[1]<ema && Close[1]<sma)
     {
      res=OrderSend(Symbol(),OP_SELL,calcLots(),Bid,3,0,0,"",MAGIC_NUM,0,Red);
      return;
     }
//--- buy conditions
   if(Open[1]<ema && Open[1]<sma && Close[1]>sma && Close[1]>ema && ema>sma)
     {
      res=OrderSend(Symbol(),OP_BUY,calcLots(),Ask,3,0,0,"",MAGIC_NUM,0,Blue);
      return;
     }
//---
  }
//+------------------------------------------------------------------+
//| Check for close order conditions                                 |
//+------------------------------------------------------------------+
void CheckForClose()
  {
   double sma;
   double ema;
//--- go trading only for first tiks of new bar
//   if(Volume[0]>1) return;
//--- get Moving Average 
    sma=iMA(NULL,0,period,0,MODE_SMA,PRICE_CLOSE,0);
    ema=iMA(NULL,0,period,0,MODE_EMA,PRICE_CLOSE,0);
//---
   for(int i=0;i<OrdersTotal();i++)
     {
      if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES)==false) break;
      if(OrderMagicNumber()!=MAGIC_NUM || OrderSymbol()!=Symbol()) continue;
      //--- check order type 
      if(OrderType()==OP_BUY)
        {
         if(Open[1]>sma && Open[1]>ema && Close[1]<ema && Close[1]<sma && ema<sma)
           {
            if(!OrderClose(OrderTicket(),OrderLots(),Bid,3,White))
               Print("OrderClose error ",GetLastError());
           }
         break;
        }
      if(OrderType()==OP_SELL)
        {
         if(Open[1]<sma && Open[1]<ema && Close[1]>ema && Close[1]>sma && ema>sma)
           {
            if(!OrderClose(OrderTicket(),OrderLots(),Ask,3,White))
               Print("OrderClose error ",GetLastError());
           }
         break;
        }
     }
//---
  }

//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
  {
//---
   
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
//---
   
  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
//---
   if(Bars<100 || IsTradeAllowed()==false) return;
   
   if(OrdersTotal() <=10) CheckForOpen();                            //  
   else  CheckForClose();
  }
//+------------------------------------------------------------------+

再来看下这个ea下的单