MACD EA（Moving Average.mq4）

// ------------------------------------------------------------------
//|                                               Moving Average.mq4 |
//|                   Copyright 2005-2014, MetaQuotes Software Corp. |
//|                                              http://www.mql4.com |
// ------------------------------------------------------------------
#property copyright   "2005-2014, MetaQuotes Software Corp."
#property link        "http://www.mql4.com"
#property description "Moving Average sample expert advisor"

#define MAGICMA  20131111
//--- Inputs
input double Lots          =0.01;
input double MaximumRisk   =0.02;
input double DecreaseFactor=0;
input int    MovingPeriod  =200;
//input int    MovingPeriod1 =60;
//input int    MovingPeriod2 =10;
//input int    MovingShift   =200;
input double TrailingStop  =150;
//input double Dian  =30;
//input double RsiG  =70;
// ------------------------------------------------------------------
//| Calculate open positions                                         |
// ------------------------------------------------------------------
int CalculateCurrentOrders(string symbol)
  {
   int buys=0,sells=0;
//---
   for(int i=0;i<OrdersTotal();i )
     {
      if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES)==false) break;
      if(OrderSymbol()==Symbol() && OrderMagicNumber()==MAGICMA)
        {
         if(OrderType()==OP_BUY)  buys ;
         if(OrderType()==OP_SELL) sells ;
        }
     }
//--- return orders volume
   if(buys>0) return(buys);
   else       return(-sells);
  }
// ------------------------------------------------------------------
//| Calculate optimal lot size                                       |
// ------------------------------------------------------------------
double LotsOptimized()
  {
   double lot=Lots;
   int    orders=HistoryTotal();     // history orders total
   int    losses=0;                  // number of losses orders without a break
//--- select lot size
  // lot=NormalizeDouble(AccountFreeMargin()*MaximumRisk/1000.0,1);
     lot=0.01;
//--- calcuulate number of losses orders without a break
   if(DecreaseFactor>0)
     {
      for(int i=orders-1;i>=0;i--)
        {
         if(OrderSelect(i,SELECT_BY_POS,MODE_HISTORY)==false)
           {
            Print("Error in history!");
            break;
           }
         if(OrderSymbol()!=Symbol() || OrderType()>OP_SELL)
            continue;
         //---
         if(OrderProfit()>0) break;
         if(OrderProfit()<0) losses ;
        }
      if(losses>1)
        // lot=NormalizeDouble(lot-lot*losses/DecreaseFactor,1);
           lot=0.01;
     }
//--- return lot size
   if(lot<0.1) lot=0.01;
   return(lot);
  }
// ------------------------------------------------------------------
//| Check 【语法】double iMA( string symbol, int timeframe, int period, int ma_shift, int ma_method, int applied_price, int shift)

/*1、symbol指定货币对，NULL为默认当前货币对

2、timeframe时间周期，0为当前时间周期

3、period平均线周期，通常选7、14、28

4、ma_shift偏移量，默认选0

5、ma_methodMA方法，通常选MODE_EMA

6、applied_price应用价格。默认选收盘价PRICE_CLOSE

7、shift指定柱值，0为当前柱，1为前一个柱，以此类推

【代码】

iMA(NULL,0,7,0,MODE_EMA,PRICE_CLOSE,0)

iMA(NULL,0,14,0,MODE_EMA,PRICE_CLOSE,0)

iMA(NULL,0,28,0,MODE_EMA,PRICE_CLOSE,0)
for open order conditions                               |
// ------------------------------------------------------------------   */
void CheckForOpen()
  {
   double ma;
   int    res;
//--- go trading only for first tiks of new bar
   if(Volume[0]>1) return;
//--- get Moving Average
   //ma=iMA(NULL,0,MovingPeriod,MovingShift,MODE_EMA,PRICE_CLOSE,0);
   //ma=iMA(NULL,0,MovingPeriod,0,MODE_EMA,PRICE_CLOSE,i);
  
      ma=iMA(NULL,0,MovingPeriod,0,MODE_EMA,PRICE_CLOSE,0);
  //    ma=iMA(NULL,0,MovingPeriod1,0,MODE_EMA,PRICE_CLOSE,0); 
    //  ma2=iRSI(NULL,0,60,PRICE_CLOSE,0);
//--- sell conditions

    if(Open[1]>ma && Close[1]<ma ) 
     {
      res=OrderSend(Symbol(),OP_SELL,LotsOptimized(),Bid,0,Bid TrailingStop*Point,0,"",MAGICMA,0,Red);
      return;
     }
 /*    else if(Open[0]>ma && Close[0]>ma &&  Open[1]>ma1 && Close[1]<ma1)
     {
      res=OrderSend(Symbol(),OP_SELL,LotsOptimized(),Bid,0,Bid TrailingStop*Point,0,"",MAGICMA,0,Red);
      return;
     }*/
//--- buy conditions
     if(Open[1]<ma  && Close[0]>ma)
    //  if(ma2>66.5)
     {
      res=OrderSend(Symbol(),OP_BUY,LotsOptimized(),Ask,0,Ask-TrailingStop*Point,0,"",MAGICMA,0,Blue);
      return;
     }
   /*  else if(Open[0]<ma && Close[0]<ma &&  Open[1]<ma1 && Close[1]>ma1)
     {
      res=OrderSend(Symbol(),OP_SELL,LotsOptimized(),Bid,0,Bid TrailingStop*Point,0,"",MAGICMA,0,Red);
      return;
     }*/
//---
  }
// ------------------------------------------------------------------
//| Check for close order conditions                                 |
// ------------------------------------------------------------------
void CheckForClose()
  {
   double ma;
//--- go trading only for first tiks of new bar
   if(Volume[0]>1) return;
//--- get Moving Average
   ma=iMA(NULL,0,MovingPeriod,0,MODE_EMA,PRICE_CLOSE,0);
 //  ma1=iMA(NULL,0,MovingPeriod1,0,MODE_EMA,PRICE_CLOSE,0);
//---
   for(int i=0;i<OrdersTotal();i )
     {
      if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES)==false) break;
      if(OrderMagicNumber()!=MAGICMA || OrderSymbol()!=Symbol()) continue;
      //--- check order type
      if(OrderType()==OP_BUY)
        {
         if(Open[1]>ma && Close[1]<ma)
           {
            if(!OrderClose(OrderTicket(),OrderLots(),Bid,3,White))
               Print("OrderClose error ",GetLastError());
           }
         break;
        }
      if(OrderType()==OP_SELL)
        {
         if(Open[1]<ma && Close[1]>ma )
           {
            if(!OrderClose(OrderTicket(),OrderLots(),Ask,3,White))
               Print("OrderClose error ",GetLastError());
           }
         break;
        }
     }
//---
  }
// ------------------------------------------------------------------
//| OnTick function                                                  |
// ------------------------------------------------------------------
void OnTick()
  {
//--- check for history and trading
   if(Bars<100 || IsTradeAllowed()==false)
      return;
//--- calculate open orders by current symbol
   if(CalculateCurrentOrders(Symbol())==0) CheckForOpen();
   else                                    CheckForClose();
//---
  }
// ------------------------------------------------------------------