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double bid=MarketInfo(Symbol(),MODE_BID); double lot=MarketInfo(Symbol(),MODE_LOTSIZE); double point=MarketInfo(Symbol(),MODE_POINT); double tickSize=MarketInfo(Symbol(),MODE_TICKSIZE); //double LotSize=0.01;
Those are not assignments; they are initialization of a common (globally declared), or static variable with a constant. They work exactly the same way in MT4/MT5/C/C++.
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They are initialized once on program load.
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They don't update unless you assign to them.
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In C/C++ you can only initialize them with constants, and they default to zero. In MTx you should only initialize them with constants. There is no default in MT5, or MT4 with strict (which you should always use).
MT4/MT5 actually compiles with non-constants, but the order that they are initialized is unspecified and
Don't try to use any price (or indicator) or server related functions in OnInit (or on load or in OnTimer before you've received a tick), as there may be no connection/chart yet:
- Terminal starts.
- Indicators/EAs are loaded. Static and globally declared variables are initialized. (Do not depend on a specific order.)
- OnInit is called.
- For indicators OnCalculate is called with any existing history.
- Human may have to enter password, connection to server begins.
- New history is received, OnCalculate called again.
- New tick is received, OnCalculate/OnTick is called. Now TickValue, TimeCurrent, account information and prices are valid.
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Unlike indicators, EAs are not reloaded on chart change, so you must reinitialize them, if necessary.
external static variable - MQL4 programming forum #2 (2013)
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res=OrderSend(Symbol(),OP_SELL,Lots(),Bid,1,Bid+StopLoss*_Point,Bid-TakeProfit*Point,NULL,0,0,Green);
You buy at the Ask and sell at the Bid. Pending Buy Stop orders become market orders when hit and open at the Ask.
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Your buy order's TP/SL (or Sell Stop's/Sell Limit's entry) are triggered when the Bid / OrderClosePrice reaches it. Using Ask±n, makes your SL shorter and your TP longer, by the spread. Don't you want the specified amount used in either direction?
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Your sell order's TP/SL (or Buy Stop's/Buy Limit's entry) will be triggered when the Ask / OrderClosePrice reaches it. To trigger close to a specific Bid price, add the average spread.
MODE_SPREAD (Paul) - MQL4 programming forum - Page 3 #25 -
The charts show Bid prices only. Turn on the Ask line to see how big the spread is (Tools → Options (control+O) → charts → Show ask line.)
Most brokers with variable spreads widen considerably at end of day (5 PM ET) ± 30 minutes. My GBPJPY shows average spread = 26 points, but average maximum spread = 134 (your broker will be similar).
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-
Those are not assignments; they are initialization of a common (globally declared), or static variable with a constant. They work exactly the same way in MT4/MT5/C/C++.
-
They are initialized once on program load.
-
They don't update unless you assign to them.
-
In C/C++ you can only initialize them with constants, and they default to zero. In MTx you should only initialize them with constants. There is no default in MT5, or MT4 with strict (which you should always use).
MT4/MT5 actually compiles with non-constants, but the order that they are initialized is unspecified and
Don't try to use any price (or indicator) or server related functions in OnInit (or on load or in OnTimer before you've received a tick), as there may be no connection/chart yet:
- Terminal starts.
- Indicators/EAs are loaded. Static and globally declared variables are initialized. (Do not depend on a specific order.)
- OnInit is called.
- For indicators OnCalculate is called with any existing history.
- Human may have to enter password, connection to server begins.
- New history is received, OnCalculate called again.
- New tick is received, OnCalculate/OnTick is called. Now TickValue, TimeCurrent, account information and prices are valid.
-
Unlike indicators, EAs are not reloaded on chart change, so you must reinitialize them, if necessary.
external static variable - MQL4 programming forum #2 (2013)
-
-
You buy at the Ask and sell at the Bid. Pending Buy Stop orders become market orders when hit and open at the Ask.
-
Your buy order's TP/SL (or Sell Stop's/Sell Limit's entry) are triggered when the Bid / OrderClosePrice reaches it. Using Ask±n, makes your SL shorter and your TP longer, by the spread. Don't you want the specified amount used in either direction?
-
Your sell order's TP/SL (or Buy Stop's/Buy Limit's entry) will be triggered when the Ask / OrderClosePrice reaches it. To trigger close to a specific Bid price, add the average spread.
MODE_SPREAD (Paul) - MQL4 programming forum - Page 3 #25 -
The charts show Bid prices only. Turn on the Ask line to see how big the spread is (Tools → Options (control+O) → charts → Show ask line.)
Most brokers with variable spreads widen considerably at end of day (5 PM ET) ± 30 minutes. My GBPJPY shows average spread = 26 points, but average maximum spread = 134 (your broker will be similar).
-
thanks William
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Hi, this martingale to my program isn't executing in the program. any ideas why?