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Metatrader4交易系统：官方EA自动交易系统的编制基本框架
声明：智能化EA自动交易系统仅仅是作为特定条件下的自动执行，其是否能够盈利取决于市场行情以及编制自动执行的语言设定，切勿太过于依赖EA，毕竟它永远跟不上人脑那样可以根据市场的变化而重新作出正确的判断；本文作为资源共享以供娱乐，由依赖EA产生的盈亏将自行承担，本文概不负责。
Introduction介绍
鉴于中国众多的交易者对交易系统了解不多,本文解释使用MQ4语言编制自动交易系统的基本知识.
Title 编制自动交易系统的基本知识
一个交易系统大致包括以下几个方面：
1 、开仓策略,即什么条件满足时开仓, 如某条线和某条线上交叉或下交叉；
2 、平仓策略,即什么条件满足时平仓, 包括止赢设置,止损设置,和跟踪止赢设置三个方面；
3 、资金管理, 其中一个方面就是下单的大小；
4 、时间管理, 如持仓时间,开平仓时间间隔等；
5、账户状态分析,如交易历史,当前资金/仓位/各仓为盈亏状态等；
当然一个交易系统不必包括全部内容,本文做为入门知识也仅通过实例介绍交易系统程序的基本构成；
//+------------------------------------------------------------------+
//| Designed by OKwh, China |
//| Copyright 2007, OKwh Dxdcn |
//| http://blog.sina.com.cn/meta5 |
//+------------------------------------------------------------------+
#property copyright "Copyright 2007 , Dxd, China."
#property link "http://blog.sina.com.cn/FXTrade , http://www.metaquotes.cc"
#define MAGICMA 200610011231
//+------------------------------------------------------------------+
//| 注意没有指标文件那些property |
//+------------------------------------------------------------------+
extern int whichmethod = 1; //1~4 种下单方式 1 仅开仓, 2 有止损无止赢, 3 有止赢无止损, 4 有止赢也有止损
extern double TakeProfit = 100; //止赢点数
extern double StopLoss = 20; //止损点数
extern double MaximumRisk = 0.3; //资金控制,控制下单量
extern double TrailingStop =25; //跟踪止赢点数设置
extern int maxOpen = 3; //最多开仓次数限制
extern int maxLots = 5; //最多单仓持仓量限制
extern int bb = 0; //非零就允许跟踪止赢
extern double MATrendPeriod=26;//使用26均线开仓条件参数 本例子
int i, p2, xxx,p1, res;
double Lots;
datetime lasttime; //时间控制, 仅当一个时间周期完成才检查条件
int init() //初始化
{
Lots = 1;
lasttime = NULL;
return(0);
}
int deinit() { return(0); } //反初始化
//主程序
int start()
{
CheckForOpen(); //开仓平仓条件检查和操作
if (bb>0) CTP(); //跟踪止赢
return(0);
}
//+------下面是各子程序--------------------------------------------+
double LotsOptimized() //确定下单量，开仓调用资金控制
{
double lot=Lots;
int orders=HistoryTotal(); // history orders total
int losses=0; // number of losses orders without a break
//MarketInfo(Symbol(),MODE_MINLOT); 相关信息
//MarketInfo(Symbol(),MODE_MAXLOT);
//MarketInfo(Symbol(),MODE_LOTSTEP);
lot=NormalizeDouble(MaximumRisk * AccountBalance()/AccountLeverage(),1); //开仓量计算
if(lot<0.1) lot=0.1;
if(lot>maxLots) lot=maxLots;
return(lot);
}
//平仓持有的买单
void CloseBuy()
{
if (OrdersTotal( ) > 0 )
{
for(i=OrdersTotal()-1;i>=0;i--)
{
if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES)==false) break;
if(OrderType()==OP_BUY)
{
OrderClose(OrderTicket(),OrderLots(),Bid,3,White);
Sleep(5000);
}
}
}
}
//平仓持有的卖单
void CloseSell()
{
if (OrdersTotal( ) > 0 )
{
for(i=OrdersTotal()-1;i>=0;i--)
{
if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES)==false) break;
if(OrderType()==OP_SELL)
{
OrderClose(OrderTicket(),OrderLots(),Ask,3,White);
Sleep(5000);
}
}
}
}
//判断是否买或卖或平仓
int buyorsell() //在这个函数计算设置你的交易信号 这里使用MACD 和MA 做例子
{
double MacdCurrent, MacdPrevious, SignalCurrent;
double SignalPrevious, MaCurrent, MaPrevious;
MacdCurrent=iMACD(NULL,0,12,26,9,PRICE_CLOSE,MODE_MAIN,0);
MacdPrevious=iMACD(NULL,0,12,26,9,PRICE_CLOSE,MODE_MAIN,1);
SignalCurrent=iMACD(NULL,0,12,26,9,PRICE_CLOSE,MODE_SIGNAL,0);
SignalPrevious=iMACD(NULL,0,12,26,9,PRICE_CLOSE,MODE_SIGNAL,1);
MaCurrent=iMA(NULL,0,MATrendPeriod,0,MODE_EMA,PRICE_CLOSE,0);
MaPrevious=iMA(NULL,0,MATrendPeriod,0,MODE_EMA,PRICE_CLOSE,1);
if(MacdCurrent<0 && MacdCurrent>SignalCurrent && MacdPrevious<SignalPrevious
&& MaCurrent>MaPrevious)
return (1); // 买 Ma在上升，Macd在0线上，并且两线上交叉
if(MacdCurrent>0 && MacdCurrent<SignalCurrent && MacdPrevious>SignalPrevious
&& MaCurrent<MaPrevious)
return (-1); // 卖
return (0); //不交易
}
int nowbuyorsell = 0;
void CheckForOpen()
{
if (Time[0] == lasttime ) return; //每时间周期检查一次 时间控制
lasttime = Time[0];
nowbuyorsell = buyorsell(); //获取买卖信号
if (nowbuyorsell == 1) //买 先结束已卖的
CloseSell();
if (nowbuyorsell == -1) //卖 先结束已买的
CloseBuy();
if (TimeDayOfWeek(CurTime()) == 1)
{
if (TimeHour(CurTime()) < 3 ) return; //周一早8点前不做具体决定于你的时区和服务器的时区 时间控制
}
if (TimeDayOfWeek(CurTime()) == 5)
{
if (TimeHour(CurTime()) > 19 ) return; //周五晚11点后不做
}
if (OrdersTotal( ) >= maxOpen) return ;
//如果已持有开仓次数达到最大，不做
if (nowbuyorsell==0) return; //不交易
TradeOK(); //去下单交易
}
void TradeOK() //去下单交易
{
int error ;
if (nowbuyorsell == 1) //买
{
switch (whichmethod)
{
case 1: res=OrderSend(Symbol(),OP_BUY,LotsOptimized(),Ask,3,0,0,"",MAGICMA,0,Blue);break;
case 2: res=OrderSend(Symbol(),OP_BUY,LotsOptimized(),Ask,3,Ask-StopLoss*Point,0,"",MAGICMA,0,Blue); break;
case 3: res=OrderSend(Symbol(),OP_BUY,LotsOptimized(),Ask,3,0,Ask+TakeProfit*Point,"",MAGICMA,0,Blue);break;
case 4: res=OrderSend(Symbol(),OP_BUY,LotsOptimized(),Ask,3,Ask-StopLoss*Point,Ask+TakeProfit*Point,"",MAGICMA,0,Blue);break;
default : res=OrderSend(Symbol(),OP_BUY,LotsOptimized(),Ask,3,0,0,"",MAGICMA,0,Blue);break;
}
if (res <=0)
{
error=GetLastError();
if(error==134)Print("Received 134 Error after OrderSend() !! "); // not enough money
if(error==135) RefreshRates(); // prices have changed
}
Sleep(5000);
return ;
}
if (nowbuyorsell == -1) //卖
{
switch (whichmethod)
{
case 1: res=OrderSend(Symbol(),OP_SELL,LotsOptimized(),Bid,3,0,0,"",MAGICMA,0,Red); break;
case 2: res=OrderSend(Symbol(),OP_SELL,LotsOptimized(),Bid,3,Bid+StopLoss*Point,0,"",MAGICMA,0,Red); break;
case 3: res=OrderSend(Symbol(),OP_SELL,LotsOptimized(),Bid,3,0,Bid-TakeProfit*Point,"",MAGICMA,0,Red); break;
case 4: res=OrderSend(Symbol(),OP_SELL,LotsOptimized(),Bid,3,Bid+StopLoss*Point,Bid-TakeProfit*Point,"",MAGICMA,0,Red); break;
default : res=OrderSend(Symbol(),OP_SELL,LotsOptimized(),Bid,3,0,0,"",MAGICMA,0,Red); break;
}
if (res <=0)
{
error=GetLastError();
if(error==134) Print("Received 134 Error after OrderSend() !! "); // not enough money
if(error==135) RefreshRates(); // prices have changed
}
Sleep(5000);
return ;
}
}
void CTP() //跟踪止赢
{
bool bs = false;
for (int i = 0; i < OrdersTotal(); i++)
{
if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES)==false) break;
if (OrderType() == OP_BUY)
{
if ((Bid - OrderOpenPrice()) > (TrailingStop * MarketInfo(OrderSymbol(), MODE_POINT))) //开仓价格当前止损和当前价格比较判断是否要修改跟踪止赢设置
{
if (OrderStopLoss() < Bid - TrailingStop * MarketInfo(OrderSymbol(), MODE_POINT))
{
bs = OrderModify(OrderTicket(), OrderOpenPrice(), Bid - TrailingStop * MarketInfo(OrderSymbol(), MODE_POINT), OrderTakeProfit(),0, Green);
}
}
}
else if (OrderType() == OP_SELL)
{
if ((OrderOpenPrice() - Ask) > (TrailingStop * MarketInfo(OrderSymbol(), MODE_POINT))) //开仓价格当前止损和当前价格比较判断是否要修改跟踪止赢设置
{
if ((OrderStopLoss()) > (Ask + TrailingStop * MarketInfo(OrderSymbol(), MODE_POINT)))
{
bs = OrderModify(OrderTicket(), OrderOpenPrice(),
Ask + TrailingStop * MarketInfo(OrderSymbol(), MODE_POINT), OrderTakeProfit(),0, Tan);
}
}
}
}
}
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