loadlibrary failing to load iViewXAPI.dll

Hi everyone,

I'm a phd student, trying to connect Matlab to an SMI eye-tracking system. SMI has an SDK for working with Matlab, and every session starts with the command:

loadlibrary('iViewXAPI.dll', 'iViewXAPI.h');

I have never worked with loadlibrbary() or any other external (mex related) commands, but installed Microsoft Visual C++ 2012, and it seems to work fine when building the 'getting started' yprime.c. However, when I try to run the above command, I get a barrage of errors (attached here at the bottom).

Does anyone have an idea what can cause this, or mend this? I haven't a clue, but I feel it has to do more with my compiler installation and less with SMI's SDK.

Thanks very much in advance,

Amir

    Error using loadlibrary
    Building iViewXAPI_thunk_pcwin64 failed.  Compiler output is:
    cl -I"C:\Program Files\MATLAB\R2015b\extern\include"  /W3  /nologo  -I"C:\Program Files\MATLAB\R2015b\extern\include"
    -I"C:\Program Files\MATLAB\R2015b\simulink\include"  /D_CRT_SECURE_NO_DEPRECATE /D_SCL_SECURE_NO_DEPRECATE /D_SECURE_SCL=0
    -I"C:\Users\user\Documents\MATLAB\Amir" -I"C:\Program Files (x86)\SMI\iView X SDK\include" "iViewXAPI_thunk_pcwin64.c" -LD
    -Fe"iViewXAPI_thunk_pcwin64.dll"
    iViewXAPI_thunk_pcwin64.c
    C:\Program Files (x86)\SMI\iView X SDK\include\iViewXAPI.h(239) : error C2061: syntax error : identifier 'EyeDataStruct'
    C:\Program Files (x86)\SMI\iView X SDK\include\iViewXAPI.h(240) : error C2061: syntax error : identifier 'rightEye'
    C:\Program Files (x86)\SMI\iView X SDK\include\iViewXAPI.h(240) : error C2059: syntax error : ';'
    C:\Program Files (x86)\SMI\iView X SDK\include\iViewXAPI.h(242) : error C2059: syntax error : '}'
    C:\Program Files (x86)\SMI\iView X SDK\include\iViewXAPI.h(263) : error C2061: syntax error : identifier 'EyeDataStruct'
    C:\Program Files (x86)\SMI\iView X SDK\include\iViewXAPI.h(264) : error C2061: syntax error : identifier 'rightEye'
    C:\Program Files (x86)\SMI\iView X SDK\include\iViewXAPI.h(264) : error C2059: syntax error : ';'
    C:\Program Files (x86)\SMI\iView X SDK\include\iViewXAPI.h(266) : error C2059: syntax error : '}'
    C:\Program Files (x86)\SMI\iView X SDK\include\iViewXAPI.h(506) : error C2071: 'ImageStruct' : illegal storage class
    C:\Program Files (x86)\SMI\iView X SDK\include\iViewXAPI.h(506) : error C2032: 'ImageStruct' : function cannot be member of struct
    'ImageStruct'
    C:\Program Files (x86)\SMI\iView X SDK\include\iViewXAPI.h(556) : error C2061: syntax error : identifier 'AOIRectangleStruct'
    C:\Program Files (x86)\SMI\iView X SDK\include\iViewXAPI.h(561) : error C2059: syntax error : '}'
    C:\Program Files (x86)\SMI\iView X SDK\include\iViewXAPI.h(716) : error C2146: syntax error : missing ')' before identifier
    'aoiData'
    C:\Program Files (x86)\SMI\iView X SDK\include\iViewXAPI.h(716) : error C2061: syntax error : identifier 'aoiData'
    C:\Program Files (x86)\SMI\iView X SDK\include\iViewXAPI.h(716) : error C2059: syntax error : ';'
    C:\Program Files (x86)\SMI\iView X SDK\include\iViewXAPI.h(716) : error C2059: syntax error : ')'
    iViewXAPI_thunk_pcwin64.c(95) : error C2065: 'AOIStruct' : undeclared identifier
    iViewXAPI_thunk_pcwin64.c(95) : error C2146: syntax error : missing ';' before identifier 'p0'
    iViewXAPI_thunk_pcwin64.c(95) : error C2065: 'p0' : undeclared identifier
    iViewXAPI_thunk_pcwin64.c(96) : error C2065: 'p0' : undeclared identifier
    iViewXAPI_thunk_pcwin64.c(96) : error C2065: 'AOIStruct' : undeclared identifier
    iViewXAPI_thunk_pcwin64.c(96) : error C2143: syntax error : missing ')' before 'const'
    iViewXAPI_thunk_pcwin64.c(96) : error C2100: illegal indirection
    iViewXAPI_thunk_pcwin64.c(96) : error C2059: syntax error : ')'
    iViewXAPI_thunk_pcwin64.c(97) : error C2065: 'p0' : undeclared identifier
    iViewXAPI_thunk_pcwin64.c(98) : error C2146: syntax error : missing ')' before identifier 'AOIStruct'
    iViewXAPI_thunk_pcwin64.c(98) : error C2065: 'AOIStruct' : undeclared identifier
    iViewXAPI_thunk_pcwin64.c(98) : error C2059: syntax error : ')'
    iViewXAPI_thunk_pcwin64.c(98) : error C2146: syntax error : missing ';' before identifier 'fcn'
    iViewXAPI_thunk_pcwin64.c(98) : warning C4047: 'return' : 'int32_T' differs in levels of indirection from 'int32_T (__cdecl *)()'
    iViewXAPI_thunk_pcwin64.c(98) : error C2065: 'p0' : undeclared identifier

Answer 1

[Chris Street]

Hi Amir,

I don't think I'll be able to fully help with your problem, but here's what I think I might be able to contribute. The SDK gives an example of using the function with this structure:

loadlibrary('iViewXAPI.dll', @iViewXAPIHeader);

Not sure if that helps, but maybe that would be worth a go? I'm having my own trouble using it, but at least my error seems to be more intelligible than the stream of errors you're getting

C

Answer 2

[Andrew Lynn]

Has anyone found an answer to Amir's question? I'm having the same problem...