Expert Advisor Programming by Andrew R. Young

EXPERT ADVISOR PROGRAMMING
// Delete order
else if(OrderCloseTime() == 0 && SellTicket > 0 && OrderType() == OP_SELLSTOP)
{
bool Deleted = OrderDelete(SellTicket,Red);
if(Deleted == true) SellTicket = 0;
// Error handling
if(Deleted == false)
{
ErrorCode = GetLastError();
ErrDesc = ErrorDescription(ErrorCode);
ErrAlert = StringConcatenate("Delete Sell Stop Order - Error ",ErrorCode,
": ",ErrDesc);
Alert(ErrAlert);
}
}
ErrLog = StringConcatenate("Ask: ",Ask," Ticket: ",SellTicket);
Print(ErrLog);
We've added the code to delete pending orders using OrderDelete() after the OrderClose()
function. The order type of the previous sell order determines which function is used to close the
order.
The main difference between the following code and the market order code is that we do not have an
order modification block. It is not necessary to place the stop loss and take profit separately for
pending orders. Therefore we will calculate the stop loss and take profit before placing the order with
OrderSend().
// Calculate stop level
double StopLevel = MarketInfo(Symbol(),MODE_STOPLEVEL) * Point;
RefreshRates();
double UpperStopLevel = Ask + StopLevel;
double MinStop = 5 * UsePoint;
// Calculate pending price
double PendingPrice = High[0] + (PendingPips * UsePoint);
if(PendingPrice < UpperStopLevel) PendingPrice = UpperStopLevel + MinStop;
// Calculate stop loss and take profit
if(StopLoss > 0) double BuyStopLoss = PendingPrice - (StopLoss * UsePoint);
if(TakeProfit > 0) double BuyTakeProfit = PendingPrice + (TakeProfit * UsePoint);
// Verify stop loss and take profit
UpperStopLevel = PendingPrice + StopLevel;
double LowerStopLevel = PendingPrice – StopLevel;
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