A.mq4 call B.DLL and B.DLL need C.DLL, How to implemnet this kind of calling and where to place these 3 files ?

 
A.mq4 call B.DLL and B.DLL need C.DLL, How to implemnet this kind of calling and where to place these 3 files ?
 
andyCAD:
A.mq4 call B.DLL and B.DLL need C.DLL, How to implemnet this kind of calling and where to place these 3 files ?
See the documentation.
Call of Imported Functions - MQL4 Documentation
  • docs.mql4.com
Call of Imported Functions - MQL4 Documentation
 

Normally all dll files should be in terminal_data_directory\MQL4\Libraries (TERMINAL_DATA_PATH\MQL4\Libraries).

But in some cases you should put C.DLL into directory where you have terminal.exe.

Reason: