Expert Advisor Programming by Andrew R. Young

EXPERT ADVISOR PROGRAMMING
Here's the code to place a pending buy stop order:
int OpenBuyStopOrder(string argSymbol, double argLotSize, double argPendingPrice,
double argStopLoss, double argTakeProfit, double argSlippage, double argMagicNumber,
datetime argExpiration = 0, string argComment = "Buy Stop Order")
{
while(IsTradeContextBusy()) Sleep(10);
// Place Buy Stop Order
int Ticket = OrderSend(argSymbol,OP_BUYSTOP,argLotSize,argPendingPrice,
argSlippage,argStopLoss,argTakeProfit,argComment,argMagicNumber,
argExpiration,Green);
// Error Handling
if(Ticket == -1)
{
int ErrorCode = GetLastError();
string ErrDesc = ErrorDescription(ErrorCode);
string ErrAlert = StringConcatenate("Open Buy Stop Order - Error ",ErrorCode,
": ",ErrDesc);
Alert(ErrAlert);
}
string ErrLog = StringConcatenate("Ask: ",MarketInfo(argSymbol,MODE_ASK),
" Lots: ",argLotSize," Price: ",argPendingPrice," Stop: ",argStopLoss,
" Profit: ",argTakeProfit," Expiration: ",TimeToStr(argExpiration));
Print(ErrLog);
}
return(Ticket);
Note that we've specified a default value of 0 for argExpiration. If you are not using a pending
order expiration time, and you wish to use the default order comment, you can simply omit the
arguments for argExpiration and argComment when calling the function. The following example will
place a buy stop order with no expiration time and the default order comment, "Buy Stop Order":
int Ticket = OpenBuyStopOrder(Symbol(),LotSize,PendingPrice,StopLoss,TakeProfit,
UseSlippage,MagicNumber);
We've added the pending price to the log in our error handling function, as well as the expiration
time, if one is specified. The TimeToStr() function converts a datetime variable to a readable string
format.
The functions to open sell stop, buy limit and sell limit orders are identical to this one. The only
difference is that the order type parameter for the OrderSend() function is changed accordingly. You
can view all of the pending order placement functions in Appendix D.
68