useful functions.mq4

// some useful functions in mql4

// Alert() prints an alert with sound and window. So, it's useful to important notifications
// make sure you always cast numbers to string in order to avoid warnings in the console
Alert("");

// Print() prints a message in the experts page in the mt4's terminal window
// This is intended to inform the user all the changes that the expert or the script does.
// This is more quiet than the alarm type.
Print("");

// DayOfWeek() returns a integer of the current week's day. Useful to avoid trading mondays and fridays, for an instance.
DayOfWeek();

// NormalizeDouble() is good to use a specific decimal number. For example, print doubles with 3 decimals like this:
NormalizeDouble(1.55484,3);  // output: 1.554

// IsTradeAllowed helps you to know if the "AutoTading" button is on or off in order to make a custom message to
// the user like "Hey, please turn on your AutoTrading button."
IsTradeAllowed();

// Same previous function but uses two parameters to know if the symbol is allowed to trade in the current time.
// may be useful to validate if is an off day of trading and notifies that to the user.
IsTradeAllowed(Symbol(), TimeCurrent());

// SymbolInfoDouble has many uses but this one is to know what is the account type of the current user
// it returns a double value like:
// standar lots: 100.000,00
// mini lots: 10.000,00
// micro lots: 1.000,00
SymbolInfoDouble(NULL,SYMBOL_TRADE_CONTRACT_SIZE)

// OrdersTotal tells you how many positions you have currently. It helps you to control your risk management and
// avoids you overtrading.
int  OrdersTotal(); // output: 3

// OrderSelect allows you to use other functions related to the order attributes like 
// OrderMagicNumber,OrderOpenPrice,OrderClosePrice
OrderSelect();