Shared library: function is not found and recognized in header file

Question

Hello,
I am trying to use Java methods into LV. I am doing so by creating Java Invocation Interface, usind which I can call Java methods into C++ and then create a shared library that can be called into LV.
When I am importing my shared library into Labview, I am getting the following error messages:
The shared library contains 3 function(s). But no function is found and recognized in the header file. The following function(s) cannot be wrapped. If you want to import these functions, please review the warning messages next to the functions below. You will need to fix the problems before you can continue with the wizard.
jclass invokeJavaClass(JNIEnv* jenv, string className);
The following symbols are not defined:
jclass;
Undefined symbols can prevent the wizard from recognizing functions and parameters. To correct this problem, check the header file to determine if you must add preprocessor definitions. Click the Back button to return to the previous page of the wizard to add a preprocessor definitionsl (for example, "NIAPI_stdcall = __stdcall" or "NIAPIDefined = 1").
The following header file was not found in the specified header file or one of the referenced header files:
-  string
-  iostream
-  cstring
-  jni.h
To fix, click the Back button to go to the previous page and add the header file path to the Include Paths list.
 Please advise.
Regards,
H
Attachments:
SharedLibError.png ‏51 KB

Answer 1

Hello Vivek,
The LabVIEW dll that I am trying to import does not include any third-party device..all my code is fully based on LabVIEW. Maybe this helps you to guess what is happening: once I've parsed the dll' header appears an error
like this one:
void
__cdecl Zdmt(LVBoolean *stop, double P, char channelName[],
    TD1
*errorIn, TD14 *FFTOptions, TD12 *Calibration, char FileName[],
int32_t minRecordLength, TD26 *InstrumentHandler, LVRefNum
sessionRefArray[],
    LVRefNum *queueIN, TD1 *errorOut, LVBoolean
*averagingDone,
    HWAVES LastRecordFetched, TD24 *Impedance, TD17
*ColeColeCluster,
    TD18 *FFTcluster, TD5
*InstrumentHandleOutputCluster, LVRefNum *queueOut,
    int32_t
*Acquired, TD6 *FreqTimeInfoCluster, double *averagesCompleted,
int32_t len);
The following symbols are not defined:
LVBoolean;
int32_t; LVRefNum;
Undefined symbols can prevent the wizard
from recognizing functions and parameters. To correct this problem,
check the header file to determine if you must add predefined symbols.
Click the Back button to return to the previous page of the wizard to
add a preprocessor definitionsl (for example, "NIAPI_stdcall =
__stdcall" or "NIAPIDefined = 1").
The following header file was
not found in the specified header file or one of the referenced header
files:
-  extcode.h
To fix, click the Back button to go to the
previous page and add the header file path to the Include Paths list.
I have replaced the first line #include "extcode.h" of
the dll header file for #include "C:\Program Files\National
Instruments\LabVIEW 8.6\cintools\extcode.h" that is the full path where
the header file is located. However, new libraries seems to be missed:
-  stdint.h
-  MacTypes.h
As far as I know,  Mactypes.h contains basic mac os data types and it doesn't have any relation with stdint.h...
I have created both of them and stored into the same folder as extcode.h, but then other libraries are missed!!!
Do you know if it would be possible to create the .dll generating all the header files associated for its data structures???
And if this is not factible, then what do you suggest me? because I hope to not having to create all the header files until it stops giving me an error!
thanks for four time,
ben