Issues with Arrays and DLLs

[joeblow7]

I'm having a problem with getting arrays populated with functions that are called from a dll. A quick example is:

Private Declare Function MHL200_GetDLLVersion Lib "dll path" (ByRef pulDllVersion() As Long) As MHL200_ErrorEnum

Then, I call it as such:

Dim ulaVersion(2) As Long  
ulMHL200Error = MHL200_GetDLLVersion(ulaVersion)

And then try to display the array like so:

MsgBox "dll version  " & ulaversion(0) & "." & ulaversion(1) 
Cells(23, 2) = ulaversion(0)

Each element of the array is 0, regardless of what I do, and it does this for any time I try and use an array. I can run it in C++ and it will print the correct values, so I know it isn't the dll. Is there something special needed for using arrays?

 

[codeliftsleep]

Check out this post:

https://stackoverflow.com/questions/35668544/using-c-dll-in-excel-vba

It appears the names get mangled and there are some extra things you need to do to get it working properly.

 

[joeblow7]

The issue with that is I'm not getting any errors and can use other functions just fine, as long as they aren't an array. The header file for the dll also already includes "extern "C"", which should prevent the names from getting mangled.

 

[codeliftsleep]

The issue with that is I'm not getting any errors and can use other functions just fine, as long as they aren't an array. The header file for the dll also already includes "extern "C"", which should prevent the names from getting mangled.

Hmm...I'm not sure. I've never tried to use a DLL other than window DLLs