error using loadlibrary on delcom.dll/.h - any idea why this is not working?

I am trying to communicate with a delcom USB product. I downloaded the .dll and the .h from their website: https://www.delcomproducts.com/productdetails.asp?ProductNum=890510

I downloaded the zip file and renamed the files for convenience to delcom.dll and delcom.h

issued:

loadlibrary('delcom.dll','delcom.h'

i get over 100 errors that look similar to this:

Error using loadlibrary
Building delcom_thunk_pcwin64 failed.  Compiler output is:
cl -I"C:\Program Files\MATLAB\R2018a\extern\include" /Zp8  /W3  /nologo
-I"E:\support_Matlab\DelCom"
-I"E:\support_Matlab\DelCom"
"delcom_thunk_pcwin64.c" -LD -Fe"delcom_thunk_pcwin64.dll"
delcom_thunk_pcwin64.c
E:\support_Matlab\DelCom\delcom.h(44) : error C2061:
syntax error : identifier 'SHORT'
E:\support_Matlab\DelCom\delcom.h(46) : error C2059:
syntax error : '}'
E:\support_Matlab\DelCom\delcom.h(55) : error C2016:
C requires that a struct or union has at least one member
E:\support_Matlab\DelCom\delcom.h(55) : error C2061:
syntax error : identifier 'HANDLE'
E:\support_Matlab\DelCom\delcom.h(56) : error C2061:
syntax error : identifier 'DType'
E:\support_Matlab\DelCom\delcom.h(56) : error C2059:
syntax error : ';'
E:\support_Matlab\DelCom\delcom.h(58) : error C2059:

I have successfully used loadlibrary with other dll's.

Does anyone have any idea why it will not work with this particular DLL?

thank you for any insight

Answer 1

[Philip Borghesani]

It appears that delcom.h requires a #include of windows.h. This answer has more information. There are also other answers by me that contain ways to work around the issue.

If you can't figure it out add a comment here with any progress you have made.

[dave]

i think i added to thread instead of commenting here. please see my next post.

I was not able to get this to work. If you have further suggestions, please let me know. thanks!

Answer 2

[dave]

Hi Philip, thanks for your help.

I tried adding

#include windows.h to the header file

i also tried

#include "windows.h" as i wasn't sure for the correct syntax.

In any case, neither case worked for me and i still end up with many warnings and errors: This is sample of the warnings and errors:

Function pointer types are unsupported in structures  HRESULT ( __stdcall * Resolve )( IAgileReference * .
Found on line 225587 of input from line 7748 of file C:\\Program Files (x86)\\Windows Kits\\8.1\\include\\um\\objidlbase.h

Function pointer types are unsupported in structures  HRESULT ( __stdcall * QueryInterface )( IMallocSpy * .
Found on line 236332 of input from line 8311 of file C:\\Program Files (x86)\\Windows Kits\\8.1\\include\\um\\objidl.h

Function pointer types are unsupported in structures  SIZE_T ( __stdcall * PreAlloc )( IMallocSpy * .
Found on line 236332 of input from line 8311 of file C:\\Program Files (x86)\\Windows Kits\\8.1\\include\\um\\objidl.h

Function pointer types are unsupported in structures  void *( __stdcall * PostAlloc )( IMallocSpy * .
Found on line 236332 of input from line 8311 of file C:\\Program Files (x86)\\Windows Kits\\8.1\\include\\um\\objidl.h

Function pointer types are unsupported in structures  void *( __stdcall * PreFree )( IMallocSpy * .
Found on line 236332 of input from line 8311 of file C:\\Program Files (x86)\\Windows Kits\\8.1\\include\\um\\objidl.h

Found on line 283638 of input from line 296 of file E:\\aaa_SVN\\calibration\\Source\\support_Matlab\\DelCom\\delcom64.h
*********
Error using loadlibrary
Building delcom64_thunk_pcwin64 failed.  Compiler output is:
cl -I"C:\Program Files\MATLAB\R2018a\extern\include" /Zp8  /W3  /nologo
-I"E:\aaa_SVN\calibration\Source\support_Matlab\DelCom"
-I"E:\aaa_SVN\calibration\Source\support_Matlab\DelCom" "delcom64_thunk_pcwin64.c" -LD
-Fe"delcom64_thunk_pcwin64.dll"
delcom64_thunk_pcwin64.c
E:\aaa_SVN\calibration\Source\support_Matlab\DelCom\delcom64.h(186) : error C2061: syntax error
: identifier 'CUSBHIDIO'
E:\aaa_SVN\calibration\Source\support_Matlab\DelCom\delcom64.h(186) : error C2059: syntax error
: ';'
E:\aaa_SVN\calibration\Source\support_Matlab\DelCom\delcom64.h(187) : error C2449: found '{' at
file scope (missing function header?)
E:\aaa_SVN\calibration\Source\support_Matlab\DelCom\delcom64.h(218) : error C2059: syntax error
: '}'
delcom64_thunk_pcwin64.c(99) : error C2061: syntax error : identifier 'ulongThunk'
delcom64_thunk_pcwin64.c(99) : error C2059: syntax error : ';'
delcom64_thunk_pcwin64.c(99) : error C2059: syntax error : 'type'
delcom64_thunk_pcwin64.c(408) : error C2061: syntax error : identifier 'CUSBHIDIO'
delcom64_thunk_pcwin64.c(408) : error C2059: syntax error : ';'
delcom64_thunk_pcwin64.c(408) : error C2449: found '{' at file scope (missing function header?)
delcom64_thunk_pcwin64.c(419) : fatal error C1004: unexpected end-of-file found

Do you have any further thoughts? I really don't know what else to try

Thanks dave