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The correct is for you to import the DLL as a component to Delphi, and not to reverse engineer the DLL (personal ethics issue).
Menu: Component -> Import Component...
So Delphi had created a unit with the funções and procedures which they have in the library!
Since you already tested by switching the DLL extension to EXE and got the Delphi IDE icon then I don’t believe the Library is Activex, then when importing the component choose the option: Import a Type Library.
If the DLL does not appear on the List of Libraries available at the time of import you must register this DLL in order for Delphi to recognize it:
regsvr32 "caminho_da_dll"


If you were unable to "see" the methods with the DLL Export.. it was probably not marked as Exported in the compilation.. do you intend to make a "hook" of the methods? Or call the methods of another application?
– Marco Giovanni
I think you don’t have a specific problem there, in general you already know and that would be: https://answall.com/q/113284/101
– Maniero
bigown, as I said above, I had already done everything that this link indicated, but the result was the same.... two functions and no results for use.
– Wellington Telles Cunha