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You must include the standard library.
EX:
Error=GetLastError();
Print("ERROR = ", ErrorDescription(Error));ErrorDescription() if a function that returns a string in the standard library.
Hope this helps.thankyou for wolfe 's help
it's work~ ~
AND i discover the code can find at the native script sample "trade.mq4"
when open/ close/ modify order occur error , it hv a code,
error=GetLastError();
Print("LastError = ",error)
but i want to print the error_string~ ~
what the sentence is??
THANKYOUYou must include the standard library.
EX:
Error=GetLastError();
Print("ERROR = ", ErrorDescription(Error));[/PHP]
ErrorDescription() is a function that returns a string in the standard library.
[PHP]string ErrorDescription(int error_code)
{
string error_string;
//----
switch(error_code)
{
//---- codes returned from trade server
case 0:
case 1: error_string="no error"; break;
case 2: error_string="common error"; break;
case 3: error_string="invalid trade parameters"; break;
case 4: error_string="trade server is busy"; break;
case 5: error_string="old version of the client terminal"; break;
case 6: error_string="no connection with trade server"; break;
case 7: error_string="not enough rights"; break;
case 8: error_string="too frequent requests"; break;
case 9: error_string="malfunctional trade operation (never returned error)"; break;
case 64: error_string="account disabled"; break;
case 65: error_string="invalid account"; break;
case 128: error_string="trade timeout"; break;
case 129: error_string="invalid price"; break;
case 130: error_string="invalid stops"; break;
case 131: error_string="invalid trade volume"; break;
case 132: error_string="market is closed"; break;
case 133: error_string="trade is disabled"; break;
case 134: error_string="not enough money"; break;
case 135: error_string="price changed"; break;
case 136: error_string="off quotes"; break;
case 137: error_string="broker is busy (never returned error)"; break;
case 138: error_string="requote"; break;
case 139: error_string="order is locked"; break;
case 140: error_string="long positions only allowed"; break;
case 141: error_string="too many requests"; break;
case 145: error_string="modification denied because order too close to market"; break;
case 146: error_string="trade context is busy"; break;
case 147: error_string="expirations are denied by broker"; break;
case 148: error_string="amount of open and pending orders has reached the limit"; break;
//---- mql4 errors
case 4000: error_string="no error (never generated code)"; break;
case 4001: error_string="wrong function pointer"; break;
case 4002: error_string="array index is out of range"; break;
case 4003: error_string="no memory for function call stack"; break;
case 4004: error_string="recursive stack overflow"; break;
case 4005: error_string="not enough stack for parameter"; break;
case 4006: error_string="no memory for parameter string"; break;
case 4007: error_string="no memory for temp string"; break;
case 4008: error_string="not initialized string"; break;
case 4009: error_string="not initialized string in array"; break;
case 4010: error_string="no memory for array\' string"; break;
case 4011: error_string="too long string"; break;
case 4012: error_string="remainder from zero divide"; break;
case 4013: error_string="zero divide"; break;
case 4014: error_string="unknown command"; break;
case 4015: error_string="wrong jump (never generated error)"; break;
case 4016: error_string="not initialized array"; break;
case 4017: error_string="dll calls are not allowed"; break;
case 4018: error_string="cannot load library"; break;
case 4019: error_string="cannot call function"; break;
case 4020: error_string="expert function calls are not allowed"; break;
case 4021: error_string="not enough memory for temp string returned from function"; break;
case 4022: error_string="system is busy (never generated error)"; break;
case 4050: error_string="invalid function parameters count"; break;
case 4051: error_string="invalid function parameter value"; break;
case 4052: error_string="string function internal error"; break;
case 4053: error_string="some array error"; break;
case 4054: error_string="incorrect series array using"; break;
case 4055: error_string="custom indicator error"; break;
case 4056: error_string="arrays are incompatible"; break;
case 4057: error_string="global variables processing error"; break;
case 4058: error_string="global variable not found"; break;
case 4059: error_string="function is not allowed in testing mode"; break;
case 4060: error_string="function is not confirmed"; break;
case 4061: error_string="send mail error"; break;
case 4062: error_string="string parameter expected"; break;
case 4063: error_string="integer parameter expected"; break;
case 4064: error_string="double parameter expected"; break;
case 4065: error_string="array as parameter expected"; break;
case 4066: error_string="requested history data in update state"; break;
case 4099: error_string="end of file"; break;
case 4100: error_string="some file error"; break;
case 4101: error_string="wrong file name"; break;
case 4102: error_string="too many opened files"; break;
case 4103: error_string="cannot open file"; break;
case 4104: error_string="incompatible access to a file"; break;
case 4105: error_string="no order selected"; break;
case 4106: error_string="unknown symbol"; break;
case 4107: error_string="invalid price parameter for trade function"; break;
case 4108: error_string="invalid ticket"; break;
case 4109: error_string="trade is not allowed in the expert properties"; break;
case 4110: error_string="longs are not allowed in the expert properties"; break;
case 4111: error_string="shorts are not allowed in the expert properties"; break;
case 4200: error_string="object is already exist"; break;
case 4201: error_string="unknown object property"; break;
case 4202: error_string="object is not exist"; break;
case 4203: error_string="unknown object type"; break;
case 4204: error_string="no object name"; break;
case 4205: error_string="object coordinates error"; break;
case 4206: error_string="no specified subwindow"; break;
default: error_string="unknown error";
}
//----
return(error_string);
}
Hope this helps.
Need Help - Equity check
I need an help to coding.
I need a equity check to future implement on various ea.
For example:
Check for ema cross and open order according the "ea cross" rule only if equity is not less than -x$
Oh,Next time I will not put an example.
I don't want to do an ema cross ea
I need to see how I can write the equity check on metatrader
Oh,Next time I will not put an example.
I don't want to do an ema cross ea
I need to see how I can write the equity check on metatraderHow about
Comment("My Equity = "AccountEquity());
Can anyone answer an MQL4 question for me?
I was wondering is there any way in MQL4 to have functionality like eval() where you can have a string that contains MQL4 code and have it evaluated as code instead of a string?
Oh,sorry I've wronlgy express my opinion.
I want to code (but I'm not able to do) something that will stop EA trading (or part of ea trading) if the equity is under a value.
Thanks for your help Roger09, but I don't need to display rhe equity on the chart
Question on timeframes
In an EA I use iCCI with 1 Hour timeframe like
cci = iCCI(NULL,PERIOD_H1,CCIPeriod,PRICE_TYPICAL,1);
If I run the EA in 1H I will get a specific value. If I run the EA in a 15M I expect to get the same value.
On IBFX I get the same value. On Alpari not.
Seems strange
Ingvar
In an EA I use iCCI with 1 Hour timeframe like
cci = iCCI(NULL,PERIOD_H1,CCIPeriod,PRICE_TYPICAL,1);
If I run the EA in 1H I will get a specific value. If I run the EA in a 15M I expect to get the same value.
On IBFX I get the same value. On Alpari not.
Seems strange
IngvarBy calling PERIOD_H1 in your indicator call you should only get H1 data. That IS strange.
Help please. Trying to get data from closed trades.
I am trying to get data from closed trades. My code works fine as long as I am only trading one pair, but with multiples it screws up somehow.
for(i=OrdersHistoryTotal(); i>0; i--)
{
if(totalOrders==0 && Magic==OrderMagicNumber() &&
OrderSelect(i-1 , SELECT_BY_POS,MODE_HISTORY)==true)
{
CloseTime = OrderCloseTime();
OpenTime = OrderOpenTime();
OrderLots = OrderLots();
Ticket=OrderTicket();
}
Can someone help me out with this please? It gives correct value for the last trade closed if the Magic matches, but if the last closed trade is a different currency pair then it gives me the wrong ticket data.
Thanks heaps,
Steve