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Questions about MQL4 - page 6

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Is it acceptable under MQ4 rules to use MessageBox() function in indicators ?
Is it allowed by MQ4 rules to use MessageBox() function in indicators ?

No. And GetLastError will return the corresponding error
Slawa,
OK, thanks for the advice.
Is it correct to believe that the GetLastError() function has authority only within one program?
Does an error occurring in a parallel running indicator or script affect the value of this function?
Is it correct to assume that function GetLastError() has authority only within one program?

correct. more accurately, "within a single module", since each executable (including the library) has its own last_error variable
Right =)
Slawa, komposter,
OK, thanks!:)
Moving on.
Gone to the MQL4 forum.
Gone to the MQL4 forum.
We'll get you there too =)))
Errors
8 = ERR_TOO_FREQUENT_REQUESTS Too many requests.
141 = ERR_TOO_MANY_REQUESTS Too many requests.

May I ask what "many" and "frequent" mean?
What criteria is laid down on the server?
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