Forum

pls does anybody know how to set the lot size for this code so that it increases as the balance increase.

Thanks In Advance!

This Is The Code

//+------------------------------------------------------------------+
//| EMA_CROSS. mq4 |
//| Coders Guru |
//| http://www.forex-tsd.com |
//+------------------------------------------------------------------+
//+------------------------------------------------------------------+
//| TODO: Add Money Management routine |
//+------------------------------------------------------------------+

#property copyright "Coders Guru"
#property link "http://www.forex-tsd.com"
//---- input parameters
extern double TakeProfit = 1000;
extern double StopLoss = 30;
extern double Lots = 0.1;
extern double TrailingStop = 10;
extern int ShortEma = 1;
extern int LongEma = 2;
//+------------------------------------------------------------------+
//| expert initialization function |
//+------------------------------------------------------------------+
int init()
{
//----
return(0);
}
//+------------------------------------------------------------------+
//| expert deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//----
return(0);
}
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
int Crossed (double line1 , double line2)
{
static int last_direction = 0;
static int current_direction = 0;
//Don't work in the first load, wait for the first cross!
static bool first_time = true;
if(first_time == true)
{
first_time = false;
return (0);
}
//----
if(line1 > line2)
current_direction = 1; //up
if(line1 < line2)
current_direction = 2; //down
//----
if(current_direction != last_direction) //changed
{
last_direction = current_direction;
return(last_direction);
}
else
{
return (0); //not changed
}
}
//+------------------------------------------------------------------+
//| expert start function |
//+------------------------------------------------------------------+
int start()
{
int cnt, ticket, total;
double SEma, LEma;
//----
if(Bars < 100)
{
Print("bars less than 100");
return(0);
}
//----
if(TakeProfit < 10)
{
Print("TakeProfit less than 10");
return(0); // check TakeProfit
}
//----
SEma = iMA(NULL, 0, ShortEma, 0, MODE_EMA, PRICE_CLOSE, 0);
LEma = iMA(NULL, 0, LongEma, 0, MODE_EMA, PRICE_CLOSE, 0);
//----
static int isCrossed = 0;
isCrossed = Crossed (LEma, SEma);
//----
total = OrdersTotal();
if(total < 1)
{
if(isCrossed == 1)
{
ticket = OrderSend(Symbol(), OP_BUY, Lots, Ask, 3, Ask - StopLoss*Point,
Ask + TakeProfit*Point, "EMA_CROSS", 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, Bid + StopLoss*Point,
Bid - TakeProfit*Point, "EMA_CROSS", 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);
}
//----
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
{
// check for trailing stop
if(TrailingStop > 0)
{
if(Bid - OrderOpenPrice() > Point*TrailingStop)
{
if(OrderStopLoss() < Bid - Point*TrailingStop)
{
OrderModify(OrderTicket(), OrderOpenPrice(),
Bid - Point*TrailingStop,
OrderTakeProfit(), 0, Green);
return(0);
}
}
}
}
else // go to short position
{
// check for trailing stop
if(TrailingStop > 0)
{
if((OrderOpenPrice() - Ask) > (Point*TrailingStop))
{
if((OrderStopLoss() > (Ask + Point*TrailingStop)) ||
(OrderStopLoss() == 0))
{
OrderModify(OrderTicket(), OrderOpenPrice(),
Ask + Point*TrailingStop,
OrderTakeProfit(), 0, Red);
return(0);
}
}
}
}
}
}
//----
return(0);
}
//+------------------------------------------------------------------+