Expert Advisor Programming by Andrew R. Young

EXPERT ADVISOR PROGRAMMING
extern bool UseTimer = true;
extern bool UseLocalTime = false;
extern int StartMonth = 6;
extern int StartDay = 15;
extern int StartHour = 7;
extern int StartMinute = 0;
extern int EndMonth = 6;
extern int EndDay = 15;
extern int EndHour = 2;
extern int EndMinute = 30;
And here is the code for checking whether to allow trading or not. The variable TradeAllowed
determines whether to open new trades. If UseTimer is set to false, TradeAllowed is automatically
set to true. Otherwise, we evaluate our start and end times in relation to the current time to see if we
will allow trading or not.
if(UseTimer == true)
{
// Convert start time
string StartConstant = StringConcatenate(Year(),".",StartMonth,".",StartDay," ",
StartHour,":",StartMinute);
datetime StartTime = StrToTime(StartConstant);
if(StartMonth == 12 && StartDay == 31 && EndMonth == 1) int EndYear = Year() + 1;
else EndYear = Year();
// Convert end time
string EndConstant = StringConcatenate(EndYear,".",EndMonth,".",EndDay," ",
EndHour,":",EndMinute);
datetime EndTime = StrToTime(EndConstant);
// Choose local or server time
if(UseLocalTime == true) datetime CurrentTime = TimeLocal();
else CurrentTime = TimeCurrent();
// Check for trade condition
if(StartTime CurrentTime)
{
bool TradeAllowed = true;
}
else TradeAllowed = false;
}
else TradeAllowed = true;
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