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zhujihai
16
zhujihai 2008.04.01 03:11 
Rosh 老师:

您好!

我是一个初学MQL4语言的新手,有很多地方还不知道,现在我遇到一个问题,希望得到老师的指教.

我根据MT4系统的MOVING AVERAGE交易系统改编了一个小程序,只在LONG ONLY中运行,后发现,

如果不按预期方向运行后损失很大,所以想在BUY中追加TRAILINGSTOP功能,可不知道怎么追加,

能帮帮我吗?

谢谢.

Dear Rosh:

Would you help me to make program run trailingstop in long only.

Thank you very much!


//+------------------------------------------------------------------+
//| Moving Average.mq4 |
//| Copyright ?2005, MetaQuotes Software Corp. |
//| http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#define MAGICMA 20050610

extern double Lots = 0.1;
extern double MaximumRisk = 0.02;
extern double DecreaseFactor = 3;
extern double MovingPeriod = 20;
extern double MovingShift = 0;
//+------------------------------------------------------------------+
//| 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);
//---- 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);
}
//---- return lot size
if(lot<0.1) lot=0.1;
return(lot);
}
//+------------------------------------------------------------------+
//| Check for open order conditions |
//+------------------------------------------------------------------+
void CheckForOpen()
{
double MA1_SMA0,MA1_LWMA0,MA1_SMA1,MA2_SMA0,MA2_SMA1,BandUper,BandLower;
int res;
//---- go trading only for first tiks of new bar
if(Volume[0]>1) return;
//---- get Moving Average
MA1_SMA0=iMA(NULL,0,MovingPeriod,MovingShift,MODE_SMA,PRICE_CLOSE,0);
MA1_SMA1=iMA(NULL,0,MovingPeriod,MovingShift,MODE_SMA,PRICE_CLOSE,1);
MA2_SMA0=iMA(NULL,0,20,MovingShift,MODE_LWMA,PRICE_CLOSE,0);
MA2_SMA1=iMA(NULL,0,20,MovingShift,MODE_LWMA,PRICE_CLOSE,1);

BandUper=iBands(NULL,0,20,2.6,0,PRICE_CLOSE,MODE_UPPER,0);
BandLower=iBands(NULL,0,20,2.6,0,PRICE_CLOSE,MODE_LOWER,0);

//---- sell conditions
if(Open[1]>MA1_SMA0 && Close[1]<MA1_SMA0)
{
res=OrderSend(Symbol(),OP_SELL,LotsOptimized(),Bid,3,0,0,"",MAGICMA,0,Red);
return;
}
//---- buy conditions
//---- if(Open[1]<MA1_SMA0 && Close[1]>MA1_SMA0 && MA1_SMA1<MA2_SMA1 && MA1_SMA0>MA2_SMA0 )


if(MA1_SMA0<MA2_SMA0 && Close[1]<Close[2] && Close[1]<Close[3] && Close[1]>MA1_SMA1)
{
res=OrderSend(Symbol(),OP_BUY,LotsOptimized(),Ask,3,BandLower,0,"",MAGICMA,20,Blue);

return;
}


//----
}
//+------------------------------------------------------------------+
//| Check for close order conditions |
//+------------------------------------------------------------------+
void CheckForClose()
{
double BandUper,BandLower,MA1_SMA1,MA1_SMA2;

//---- go trading only for first tiks of new bar
if(Volume[0]>1) return;
//---- get Moving Average
// ma=iMA(NULL,0,MovingPeriod,MovingShift,MODE_SMA,PRICE_CLOSE,0);
BandUper=iBands(NULL,0,20,2.6,0,PRICE_CLOSE,MODE_UPPER,0);
BandLower=iBands(NULL,0,20,2.6,0,PRICE_CLOSE,MODE_LOWER,0);
MA1_SMA1=iMA(NULL,0,MovingPeriod,MovingShift,MODE_SMA,PRICE_CLOSE,1);
MA1_SMA2=iMA(NULL,0,MovingPeriod,MovingShift,MODE_SMA,PRICE_CLOSE,2);


//----
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) OrderClose(OrderTicket(),OrderLots(),Bid,3,White);
if(High[1]>BandUper) OrderClose(OrderTicket(),OrderLots(),Bid,3,White);
break;
}
if(OrderType()==OP_SELL)
{
// if(Open[1]<ma && Close[1]>ma) OrderClose(OrderTicket(),OrderLots(),Ask,3,White);
if( High[0]>BandUper || Close[1]<MA1_SMA1 ) OrderClose(OrderTicket(),OrderLots(),Ask,3,White);

break;
}
}
//----
}
//+------------------------------------------------------------------+
//| Start function |
//+------------------------------------------------------------------+
void start()
{
//---- check for history and trading
if(Bars<100 || IsTradeAllowed()==false) return;
//---- calculate open orders by current symbol
if(CalculateCurrentOrders(Symbol())==0) CheckForOpen();
else CheckForClose();
//----
}
//+------------------------------------------------------------------+

chenhexin
196
chenhexin 2008.04.01 04:44  
你看看macd sample 也就是这个论坛里的实例。应该能找到,你早的追击止损。
Rashid Umarov
管理员
6605
Rashid Umarov 2008.04.01 08:15  
hexinchen:
你看看macd sample 也就是这个论坛里的实例。应该能找到,你早的追击止损。
Yes, read article 智能交易示例
zhujihai
16
zhujihai 2008.04.02 02:30  

谢谢ROSH和各位老师!

我先学习,研究一下,不懂了在问您

Thank you Dear ROSH!

I will study it, But if I can not understand something,Please teache me.

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