//+------------------------------------------------------------------+

//| Ë«¾ùÏß.mq4 |

//| |

//+------------------------------------------------------------------+

#property copyright "Copyright 2013, MetaQuotes Software Corp."

#property link "http://www.metaquotes.net"

//--- input parameters

extern int shortp=10;

extern int longp=20;

extern double Lots=0.1;

int Crossed (double line1 , double line2)

{

static int last_direction = 0;

static int current_dirction = 0;

if(line1>line2)current_dirction = 1; //up

if(line1<line2)current_dirction = 2; //down

if(current_dirction != last_direction) //changed

{

last_direction = current_dirction;

return (last_direction);

}

else

{

return (current_dirction);

}

}

int start()

{

int cnt, ticket, total;

double shortma, longma;

if(Bars<100)

{

Print("bars less than 100");

return(0);

}

shortma = iMA(NULL,0,shortp,0,MODE_SMA,PRICE_CLOSE,1);

longma = iMA(NULL,0,longp,0,MODE_SMA,PRICE_CLOSE,1);

//¿ª²Ö----------------------------------------------------------------

int isCrossed = Crossed (shortma,longma);

total = OrdersTotal();

if(total < 1)

{

if(isCrossed == 1)

{

ticket=OrderSend(Symbol(),OP_BUY,Lots,Ask,3,0,0,"My MA",12345,0,Green);

if(ticket>0)

{

if(OrderSelect(ticket,SELECT_BY_TICKET,MODE_TRADES))

Print("BUY order opened : ",OrderOpenPrice());

}

else Print("Error opening BUY order : ",GetLastError());

return(0);

}

if(isCrossed == 2)

{

ticket=OrderSend(Symbol(),OP_SELL,Lots,Bid,3,0,0,"My MA",12345,0,Red);

if(ticket>0)

{

if(OrderSelect(ticket,SELECT_BY_TICKET,MODE_TRADES))

Print("SELL order opened : ",OrderOpenPrice());

}

else Print("Error opening SELL order : ",GetLastError());

return(0);

}

return(0);

}

//ƽ²Ö-------------------------------------------------------------------------------------------------------

for(cnt=0;cnt<total;cnt++)

{

OrderSelect(cnt, SELECT_BY_POS, MODE_TRADES);

if(OrderType()<=OP_SELL && OrderSymbol()==Symbol())

{

if(OrderType()==OP_BUY) // long position is opened

{

if(isCrossed == 2)

{

OrderClose(OrderTicket(),OrderLots(),Bid,3,Violet);// close position

return(0); // exit

}

}

if(OrderType()==OP_SELL) // go to short position

{

if(isCrossed == 1)

{

OrderClose(OrderTicket(),OrderLots(),Ask,3,Violet);// close position

return(0); // exit

}

}

}

}

return(0);

}