Please I need help with MQ4 Scripts and Experts.

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Hello Everybody!

I'm looking for someone's help because I don't know if the scripts I have created does not work in DEMO mode of trading at MQ4.

I just know that, when I load an "open order" script, for example, the daily returns two messages:

First that my script was removed and

after "called functions are not allowed"

Thank you everybody!

Regards


Rafael Elias Grígolo.

 
another quiz about what could be the sourcecode ....
 
meikel:
another quiz about what could be the sourcecode ....

Right! Thank you for your response Meikel!

The sourcecode that folows below is the code of a default script from MQ4, called "Trade". That messages in the Daily I described previously was about this script:


//+------------------------------------------------------------------+
//| trade.mq4 |
//| Copyright © 2004, MetaQuotes Software Corp. |
//| http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2004, MetaQuotes Software Corp."
#property link "http://www.metaquotes.net/"

#include <stdlib.mqh>
#include <WinUser32.mqh>
//+------------------------------------------------------------------+
//| script "trading for all money" |
//+------------------------------------------------------------------+
int start()
{
//----
if(MessageBox("Do you really want to BUY 1.00 "+Symbol()+" at ASK price? ",
"Script",MB_YESNO|MB_ICONQUESTION)!=IDYES) return(1);
//----
int ticket=OrderSend(Symbol(),OP_BUY,1.0,Ask,3,0,0,"expert comment",255,0,CLR_NONE);
if(ticket<1)
{
int error=GetLastError();
Print("Error = ",ErrorDescription(error));
return;
}
//----
OrderPrint();
return(0);
}
//+------------------------------------------------------------------+

 
rafa_gringo:

Right! Thank you for your response Meikel!

The sourcecode that folows below is the code of a default script from MQ4, called "Trade". That messages in the Daily I described previously was about this script:


//+------------------------------------------------------------------+
//| trade.mq4 |
//| Copyright © 2004, MetaQuotes Software Corp. |
//| https://www.metaquotes.net// |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2004, MetaQuotes Software Corp."
#property link "https://www.metaquotes.net//"

#include <stdlib.mqh>
#include <WinUser32.mqh>
//+------------------------------------------------------------------+
//| script "trading for all money" |
//+------------------------------------------------------------------+
int start()
{
//----
if(MessageBox("Do you really want to BUY 1.00 "+Symbol()+" at ASK price? ",
"Script",MB_YESNO|MB_ICONQUESTION)!=IDYES) return(1);
//----
int ticket=OrderSend(Symbol(),OP_BUY,1.0,Ask,3,0,0,"expert comment",255,0,CLR_NONE);
if(ticket<1)
{
int error=GetLastError();
Print("Error = ",ErrorDescription(error));
return;
}
//----
OrderPrint();
return(0);
}
//+------------------------------------------------------------------+

at the first glance....

both isnt used ... and therefore not necessary...

#include <stdlib.mqh>
#include <WinUser32.mqh>


makes no sense:

if(MessageBox("Do you really want to BUY 1.00 "+Symbol()+" at ASK price? ",
"Script",MB_YESNO|MB_ICONQUESTION)!=IDYES) return(1);

if you drag and drop a script to buy on a chart why do you need a second confirmation ?

and why do you return (1) if answer is no ? makes no sense... this return value is never been checked...

i have to admit, that i never written scripts and therefore dont know the behavior of scripts.

i know EA's and Indicators, but havent used scripts til now.

its late, maybe another coder find the answer, i am tired... good night

 
Did you enable Trading for Scripts at all?
 
And since there is a delay until the message box returns, you need a refresh for the Ask.
 
fx1.net:
Did you enable Trading for Scripts at all?

Dear Fx1.net,

Thank you for your response.

I think I enabled trading for Scripts when I Selected "Tools" --> "Options" --> "Expert Advisor" --> Enable Expert Avisor.

Am I Right?

Thanks


Rafael

 
meikel:

at the first glance....

both isnt used ... and therefore not necessary...

#include <stdlib.mqh>
#include <WinUser32.mqh>


makes no sense:

if(MessageBox("Do you really want to BUY 1.00 "+Symbol()+" at ASK price? ",
"Script",MB_YESNO|MB_ICONQUESTION)!=IDYES) return(1);

if you drag and drop a script to buy on a chart why do you need a second confirmation ?

and why do you return (1) if answer is no ? makes no sense... this return value is never been checked...

i have to admit, that i never written scripts and therefore dont know the behavior of scripts.

i know EA's and Indicators, but havent used scripts til now.

its late, maybe another coder find the answer, i am tired... good night




Hello Meikel,

Thanks for your help!

Let me explain a thing to you:

I'm begginer at Forex Trading. But I want open a buy order at a price, for example, and, when the price reaches certain value (that I want to define), I want the position being closed by one robot.

Until now, I must close the orders manually.

My problem actually, is that I don't know what kind of Robot I must use to do it for me (EA or Script).

Do you think I can solve this with an EA?

Once more, thank you

Regards


Rafael

 

script runs once

an EA after attached to a chart runs every tick - details in the manual

the only way to open and close orders over a longer time without interaction is therefore an EA

 
meikel:

script runs once

an EA after attached to a chart runs every tick - details in the manual

the only way to open and close orders over a longer time without interaction is therefore an EA

All Right!

Thank you for these information!

Cordially

Rafael.

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