Guilherme Mendonca :
Is there any fuction to return the expert file name?
For MQL4 there is WindowExpertName () function, but I didn't find anything for MQL5.
See here: Migrating from MQL4 to MQL5 article

Migrating from MQL4 to MQL5
- www.mql5.com
This article is a quick guide to MQL4 language functions, it will help you to migrate your programs from MQL4 to MQL5. For each MQL4 function (except trading functions) the description and MQL5 implementation are presented, it allows you to reduce the conversion time significantly. For convenience, the MQL4 functions are divided into groups, similar to MQL4 Reference.
Thanks my friend.
string MQLInfoString(MQL5_PROGRAM_NAME)
I don't know why sometimes the "search engine" do not find what we seeking.
I searched with a lot of diferente terms, opened at least 30 pages about this subject but did not found anything.

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Is there any fuction to return the expert file name?
For MQL4 there is WindowExpertName() function, but I didn't find anything for MQL5.