Calling a LabView DLL from VB

I am running an NI example which is here
http://zone.ni.com/devzone/cda/epd/p/id/3990
and when I run it the new VB environment converts the program to the new .net structure ok.
However, when it runs it gives this error
Loader lock was detected
Attempting managed execution inside OS Loader lock. Do not attempt to run managed code inside a DllMain or image initialization function since doing so can cause the application to hang.
Any ideas?

Hi tomnz,
Is this the error you are seeing?
'C:\Program Files\National Instruments\Shared\LabVIEW Run-Time\7.0\DNCompInfo.dll' is attempting managed execution inside OS Loader lock. Do not attempt to run managed code inside a DllMain or image initialization function since doing so can cause the application to hang.'
National Instruments has a KnowledgeBase article that discusses this issue. Please give this a try. If you still receive this error, please let me know.
Donovan

Similar Messages

How to call a labview dll from excel-VBA?

How to call a simple Labview DLL from Excel VBA?
I have seen examples of DLL calls from VB but does it work the same way for VBA? I have 2000 excel and Labview 8.5. I created the DLL and tried to call it from VBA using the same type of code as in NI's website example(ofcourse its a bit diff with 8.5)
http://zone.ni.com/devzone/cda/tut/p/id/...
BUT it errors out when called from excel
ERROR: The object invoked has disconnected from its client

You would need to provide more details about the LabVIEW DLL, such as the prototypes of the functions (VIs) that you're trying to call, and your actual VBA code. Specifically, what object you're trying to create. You should also make sure the Run-Time Enginer is installed, as well as any required libraries such as the VISA Run-Time if you're using VISA. Have you made sure to enable the ActiveX server for the DLL?
A search yielded the following items that you may wish to peruse:
http://forums.ni.com/ni/board/message?board.id=170&message.id=261345&requireLogin=False
http://forums.ni.com/ni/board/message?board.id=170&message.id=45099&requireLogin=False
http://forums.ni.com/ni/board/message?board.id=170&message.id=299209&requireLogin=False
http://forums.ni.com/ni/board/message?board.id=170&message.id=195846&requireLogin=False

How to call Labview DLL from VB2005

Dear all expert,
I'm a student and very new in Labview programming.
Currently i have build a simple vi and need to convert it to dll so that i can call it from my VB.net. But the problem is how to call the labview dll from my VB.net?
I know we must declare function something like this,
Auto function Bodeplot Lib"..\\Bodeplot.dll" (Byval Val1 as double, Byval Val2 as double,...) as double
but how to determine Val1, Val2 (and so on) is input for which data? if my vi have 10 input (frequency, Kc,Fcz,Fcp,Wzrhp,Wp,k,Wz,Beta and Operation) ? and how to select the output (my application have 3 possible output : magnitup loop,phase loop, and degree loop)
In addition, since I'm using Labview 8.0 , and as i know apllication builder for this version cannot convert vi to dll which contain Mathscript (but unfortunely, my vi all use Mathscript), so really hope someone can help me to convert my vi to dll using Labview 8.2 (which remove this limitation).
here I'm attach my Vi and really hope someone willing to help.
Thank you.
Attachments:
bodeplot.vi ‏1049 KB

On Sep 17, 6:40 am, cckoh <[email protected]> wrote:
> Dear all expert,
> I'm a student and very new in Labview programming.
> Currently i have build a simple vi and need to convert it to dll so that i can call it from my VB.net. But the problem is how to call the labview dll from my VB.net?
>  
> I know we must declare function something like this,
>  
> Auto function Bodeplot Lib"..\\Bodeplot.dll" (Byval Val1 as double, Byval Val2 as double,...) as double
>  
> but how to determine Val1, Val2 (and so on) is input for which data?  if my vi have 10 input (frequency, Kc,Fcz,Fcp,Wzrhp,Wp,k,Wz,Beta and Operation) ? and how to select the output (my application have 3 possible output : magnitup loop,phase loop, and degree loop)
>  
> In addition, since I'm using Labview 8.0 , and as i know apllication  builder for this version cannot convert vi to dll which contain Mathscript (but unfortunely, my vi all use Mathscript), so really hope someone can help me to convert my vi to dll using Labview 8.2 (which remove this limitation).
>  
> here I'm attach my Vi and really hope someone willing to help.
>  
> Thank you.
>  
>
> bodeplot.vi:http://forums.ni.com/attachments/ni/170/272124/1/bodeplot.vi
If you insist on using Labview with your project then you should
consider using ActveX in place of using a dynamic link library to
interface to your VB.net code. You don't need "Application Builder"
if you use ActiveX. The Student, Basic and Full development versions
of Labview for Windows come with ActiveX capability. For more
information on ActiveX look up the subject ActiveX in Labview's Help
File.
Howard

How to call labview DLL from C#, passing char, char[], float[], long, short

Hi,
I'm having trouble calling labview dll from C# to perform certain function.
The function supposed to return the values in the float Analysis[] array. However, when I execute it it only returns zero values.
It seems that some parameters are not properly passed to the dll.
Below is the function in the header file:
void __stdcall Optical_Center(char FileDirectory[], long ImagePtr,
    short int Height, short int Width, char ReadFromFile, float Analysis[],
    long lenAnalysis);
and my corresponding dll import in c#:
[DllImport(@"SMIA.dll", CharSet = CharSet.Ansi)]
        public static extern void Optical_Center([MarshalAs(UnmanagedType.LPStr)]string FileDirectory, long ImagePtr,
            short Height, short Width,char ReadFromFile, IntPtr Analysis,
            long lenAnalysis);
string str = @"C:\SMIA.raw";
int len = 3;
long m_lenAnalysis = 3;
long m_ImagePtr = 0;
short m_Height = 2464;
short m_Width = 3280;
IntPtr m_PtrArray = Marshal.AllocHGlobal(len * Marshal.SizeOf(typeof(float)));
char m_ReadFromFile = '1';
Optical_Center(str,m_ImagePtr,m_Height,m_Width,m_ReadFromFile,m_PtrArray,m_lenAnalysis);
float[] m_Analysis = new float[len];
Marshal.Copy(m_PtrArray, floatArray,0,len);
Marshal.FreeHGlobal(m_PtrArray);
string printstr = "";
for (int i=0; i<len; i++)
    printstr = printstr + floatArray[i].ToString() + "\n";
MessageBox.Show(printstr);
Appreciate if anyone can help, thanks.
KL

I was just about to post the header file of the DLL, when
I noticed that there's a function called LVDLLStatus.
This little thingie turned out to be a rather handy tool.
With that function I found that in the DLL I had a problem
with another function that prevented the DLL to be correctly
loaded.
This other function in the DLL is for generating digital output
and it worked as it should, when tested from LV.
Anyway if someone is interested, I got it working by using
the LoadLibrary and GetProcAddress function, as in the
source code thatI posted earlier.
I will investigate what is wrong with that digital output, and
post into a another thread if I have problems with that.

How to call LabVIEW dll from ATL COM dll

I have tried to call simple LabVIEW 8.6 Dll from win32 test application, class Library.
I have include LabVIEW generated SharedLib.h file and SharedLib.lib file in the test application which I created as simple win32 console project and also from win32 class Library. I was sucessfully able to call my LabVIEW dll funtion.
But when I create ATL COM project and try to add SharedLib.h file and SharedLib.lib file I used to get following erors
Error 1 error C2733: second C linkage of overloaded function 'StrCatW' not allowed d:\program files\national instruments\labview 8.6\cintools\extcode.h 463
Error 2 error C2733: second C linkage of overloaded function 'StrCpyW' not allowed d:\program files\national instruments\labview 8.6\cintools\extcode.h 464
Error 3 error C2733: second C linkage of overloaded function 'StrCpyNW' not allowed d:\program files\national instruments\labview 8.6\cintools\extcode.h 465
Error 4 error C2733: second C linkage of overloaded function 'StrCmpW' not allowed d:\program files\national instruments\labview 8.6\cintools\extcode.h 466
Error 5 error C2733: second C linkage of overloaded function 'StrCmpNW' not allowed d:\program files\national instruments\labview 8.6\cintools\extcode.h 467
these many errors.
Will some one explain me how to call LabVIEW dll from ATL COM dll.
Thanks & Regards,
Jay

I also had this problem. My application is unicode-aware, but I was attempting to link it to a library with primitive C-string arguments. You could dynamically load the DLL as suggested (more work), modify the header files (really not recommended), or if you are feeling lucky you could try fooling the compiler, as I was successfully able to do in Visual Studio 2010, by steering the preprocessor around those functions (assuming you're not using them, of course -- otherwise this probably wouldn't work):
// prepare for NI extcode.h inclusion. avoid linker errors for this project.
#define StrCatW(a,b)     IgnoreLinkError_StrCatW(a,b);
#define StrCpyW(a,b)     IgnoreLinkError_StrCpyW(a,b);
#define StrCpyNW(a,b,c) IgnoreLinkError_StrCpyNW(a,b,c);
#define StrCmpW(a,b)     IgnoreLinkError_StrCmpW(a,b);
#define StrCmpNW(a,b,c) IgnoreLinkError_StrCmpNW(a,b,c);
// header file for my LabView-built DLL (ASCII single-byte character arguments)
#include <MyLibraryHeader.h>
// clean up afterwards, put things back to 'normal'
#undef StrCatW
#undef StrCpyW
#undef StrCpyNW
#undef StrCmpW
#undef StrCmpNW

Calling LabVIEW DLL from C with 2d array strings

I am trying to write a DLL in C that calls a LabVIEW DLL that has a
number of functions that each return a 2D array of strings which are the formatted
measurements, with column 1 being the measurement name and column 2
being the measurement. I wanted to use the 2D array of strings since
this would give a uniform interface for returning measurements. Ive
cobbled together bits and pieces of messages and example code I've
found here into something that almost works, and was hoping someone
with a little more experience in interfacing C with LabVIEW DLLs would
be able to help me.
Here's a little
snippet from the header file generated when building the LabVIEW DLL:
typedef struct {
long dimSizes[2];
LStrHandle String[1];
} TD1;
typedef TD1 **TD1Hdl;
long __cdecl TestVI(char serialNumber[], TD1Hdl *formattedMeasurements, char ErrorDescription[], long len);
The "TestVI" VI generates a 2D array of strings. The cell contents and number of rows are random to
simulate different measurement names and measurements.
Here's a snippet for the wrapper class:
class CArgoTestsLabVIEW
public:
CArgoTestsLabVIEW();
virtual ~CArgoTestsLabVIEW();
// test modules called from parent DLL
BOOL GetResult_LV(CString resultName, double *result);
long TestVI_LV(CString serialNumber);
private:
TD1Hdl m_LVStringArray;
CMapStringToString m_resultMap;
InitMeasurementsArray();
PopulateResultMap();
The "m_LVStringArray" is intended to hold the 2D array of strings that
the test modules spit out. The "m_resultMap" is just for accessing the
measurements from the parent DLL via the "GetResult_LV" function.
The implementation of TestVI_LV is:
long CArgoTestsLabVIEW::TestVI_LV(CString serialNumber)
long rc = 0;
char errStr[BUFFERLEN];
strcpy(errStr,"");
rc = InitMeasurementsArray();
if (rc == 0) {
rc = TestVI(serialNumber.GetBuffer(serialNumber.GetLength()), &m_LVStringArray, errStr, BUFFERLEN);
PopulateResultMap();
return rc;
The accessor functions InitMeasurementsArray and PopulateResultMap are:
long CArgoTestsLabVIEW::InitMeasurementsArray()
MgErr err;
if (m_LVStringArray)
DSDisposeHandle(m_LVStringArray);
m_LVStringArray = (TD1Hdl)DSNewHandle(sizeof(TD1));
// code to check for NULL
// Set number of strings in array to 0
(*m_LVStringArray)->dimSizes[0] = 0;
(*m_LVStringArray)->dimSizes[1] = 0;
// Set total size of array structure. For now it is only as big as the long variable.
err = DSSetHandleSize((UHandle)m_LVStringArray, sizeof(long));
// code to check for error
return 0;
void CArgoTestsLabVIEW::PopulateResultMap()
int numberOfResults;
int i;
int charCnt;
numberOfResults = (*m_LVStringArray)->dimSizes[0];
if (numberOfResults == 0) {
return;
m_resultMap.RemoveAll();
for (i = 0; i < numberOfResults; i++) {
charCnt = (*((*m_LVStringArray)->String[i * 2]))->cnt;
(*((*m_LVStringArray)->String[i * 2]))->str[charCnt] = '\0';
charCnt = (*((*m_LVStringArray)->String[i * 2 + 1]))->cnt;
(*((*m_LVStringArray)->String[i * 2 + 1]))->str[charCnt] = '\0';
m_resultMap.SetAt((LPCTSTR) (*((*m_LVStringArray)->String[i * 2]))->str, (LPCTSTR) (*((*m_LVStringArray)->String[i * 2 + 1]))->str);
The problem I have is that I eventually get an access violation from
the run-time engine if I try to call the test VI in a loop. I'm
obviously having a memory management problem, but it escapes me as to
where the problem is. Anybody have any ideas?

smercurio_fc wrote:
The problem I have is that I eventually get an access violation from the run-time engine if I try to call the test VI in a loop. I'm obviously having a memory management problem, but it escapes me as to where the problem is. Anybody have any ideas?
(*((*m_LVStringArray)->String[i * 2]))->str[charCnt] = '\0';
Hi smercurio,
Have you solved this? I don't work with C much anymore, but it looks, here, as if the memory at str[charCnt] isn't yours to address/change.
Is index "charCnt" one char past the end of the String-memory allocated by LabVIEW?
just an idea!
Hmmm, maybe page 9 is a bit far back to fish in the unanswered posts.
Message Edited by Dynamik on 03-03-2006 02:03 AM
When they give imbeciles handicap-parking, I won't have so far to walk!

How to call labview DLL from visual C++?

Hi,
I'm trying to call a LV DLL from a VC++ application
by using the LoadLibrary and GetProcAddress functions.
The DLL contains a simple sum function. The Library is
loaded correctly, but the result is always 0.0000.
I have loaded a VC++ DLL in a similar way and it works
correctly. Also, I have tested the DLL by loading it in LV,
and it works correctly. The calling convention is defined
to be stdcall in LV Application Builder.
I have also tried this solution, but I will get a compiler error
from one the header files that are created by the LV when
the DLL is made. The error comes from this line
typedef char                int8;
and the error states that
..\fundtypes.h(107) : error C2371: 'int8' : redefinition; different basic types
If someone knows of newer tutorial(for LV 8.2) or knows how to use those
LoadLibrary and GetProcAddress function for LV DLLs, I will appreciate the
information greatly.
Below is the code that I'm using for loading the LV DLL.
Thanks
#include "stdafx.h"
#include <stdio.h>
#include <stdlib.h>
#include <map>
#include <windows.h>
int _tmain(int argc, _TCHAR* argv[])
    HINSTANCE LVLib = LoadLibrary(TEXT("Testdll"));
    typedef double (__stdcall *MYPROC)(double, double);
    if (LVLib != NULL)
        MYPROC ProcAdd = (MYPROC) GetProcAddress(LVLib, "Add");
        if (ProcAdd != NULL)
            double d = (ProcAdd)(5.5, 6.6);
            printf("sum = %f\n", d);
        else
            printf("Invalid function pointer\n");
    else
        printf("Failed to load the library\n");
    return 0;

I was just about to post the header file of the DLL, when
I noticed that there's a function called LVDLLStatus.
This little thingie turned out to be a rather handy tool.
With that function I found that in the DLL I had a problem
with another function that prevented the DLL to be correctly
loaded.
This other function in the DLL is for generating digital output
and it worked as it should, when tested from LV.
Anyway if someone is interested, I got it working by using
the LoadLibrary and GetProcAddress function, as in the
source code thatI posted earlier.
I will investigate what is wrong with that digital output, and
post into a another thread if I have problems with that.

Calling LV created DLL from LV

Howdy-
I'm trying to call a LV DLL from within LV (seperate project). Once the DLL has been comppiled I'm using the Import Shared Library to create the node.
However when I try this I get an error message with the import that appears to have trouble with LVBoolean and int32_t.
I've created a simple DLL (adds a DBL to an INT 32 and creates a Bool when the sum is > 0).
Compiling this DLL and trying to import it has the same issue.
Any clues?
Attachments:
Import Shared Lib.png ‏49 KB
My DLL.zip ‏34 KB

nathand wrote:
This does mean LabVIEW will create the datatypes with U8 instead of booleans, which you can replace yourself with a boolean after importing.
Except that the Call Library Node doesn't allow for configuration of an explicit boolean type (for obvious reasons as there is no standardized boolean datatype in C before C11 and even then the standard says nothing about if it should be a byte or the prefered integer size for the current platform or anything else). LabVIEW then uses Adapt to Type instead, which forces the skalar parameter to be always passed by pointer!
Most simple solution is to still use an explicit integer that is properly sized and convert between the LV Boolean and the integer on the diagram.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

How can I call a LabVIEW executable from within another LabVIEW executable?

I have a customer requirement for two LabVIEW executables. Based on their current setup, they need to run executable "A" or "B", both of which are under independent revision control. I have created a third "selection" executable that allows the operator to choose between one of the two, but I am receiving errors when I attempt to call a LabVIEW executable from within a LabVIEW executable using either the "System exec" VI or the "Run Application" VI. If I call a non-LabVIEW executable (such as Windows Explorer) everything works fine.

> I have a customer requirement for two LabVIEW executables. Based on
> their current setup, they need to run executable "A" or "B", both of
> which are under independent revision control. I have created a third
> "selection" executable that allows the operator to choose between one
> of the two, but I am receiving errors when I attempt to call a LabVIEW
> executable from within a LabVIEW executable using either the "System
> exec" VI or the "Run Application" VI. If I call a non-LabVIEW
> executable (such as Windows Explorer) everything works fine.
As with the other poster, I suspect a path problem. You might try the
path out in a shell window, and if it works, copy the complete absolute
path to LV to see if that works. LV is basically passing the comma
nd to
the OS and doesn't even know what is in it, so you should be able to get
it to work.
The other poster commented on subpanels, which is a good suggestion, but
without going to LV7, an EXE can have open more than one VI. You can
use the VI Server and the Run method to fire up another top-level VI.
The decision is whether you want both to be in unique processes.
Greg McKaskle

Error while caling Labview DLL from VB2005

Dear all expert,
i'm a student and very new in Labview. Currently, i design a application using Labview8.2 and need convert it to dll. So that i can call it fom my VB2005.
I'm encounter an error, there is my computer "hang" when calling the labview dll. I suspect this may due unproper way i calling the labview dll in my VB program. So, really hope some one can give me any suggestion and modification to my program. I attach my vi and Vb program.
for your information,
i already install labview run time engine 8.2.1 and uncheck the "Loader Lock detected".
below is the Function Prototype create when i using Application Builder to build the dll.
void Bodeplot(unsigned short Operation, double Beta, double Frequency, double Kc, double Fcz, double Fcp, double Wz, double Wp, double Wzrhp, double k, double *Output)
Thank you very much.
Attachments:
MyProgram.zip ‏723 KB

Hi cckoh,
A couple suggestions include:
1) Make sure you are using the correct .NET data types that map to the data type that LabVIEW uses. For example, your Operation paramter for your DLL is an unsigned short which is equivalent to a System.UInt16 in .NET.
2) You should be using ByRef instead of ByVal for your output parameters. For example, in your function prototye, you have double *Output. For example, when you import your unamanged DLL, the prototype you should use woudl be:
Declare Auto Function Bodeplot Lib "........."(ByVal Operation as System.UInt16, ........ ByRef Output as Double)
I tested this out and it loads the DLL, calls the function, and returns without problems.
Hope this helps!!
Best Regards,
Jonathan N.
National Instruments

To call a VB dll from java

Hi,
I want to know how one can call a VB dll from Java.I know it is something like calling a C dll which in turn calls the VB dll.I also went through the tutorial provided on the sun site and was able to call a C dll through java but I still do not know how to call a VB dll from java.
regards,
Anshuman

Have you checked google?
First hit. Reply 17.

Calling LabView DLLs from C/C++

Hi!
Is it possible to call functions in the LabView DLLs directly from
C/C++?
Functions like InvChiSquare in lvanlys.dll has "Adapt to Type" void *
parameters. How do I specify those parameters from C/C++?
I have tried to use the "Build Shared Library" function in LabView to
make a wrapper dll of the "Inv Chi Square Distrubution" vi, but when I
call this function in the dll from C/C++ the function never returns.
Other functions in the same dll that does not use functions in the
lvanalys.dll are working ok.
Regards
Hans Forssell

There are 2 great places to get infomraiton on passing data to dlls, and the data types used. First would be this manual. Using External Code in LabVIEW
The second is the dll examples that ship with LabVIEW 7.0. Go to LabVIEW 7.0\examples\dll\data passing\Call Native Code.vi

Calling 64-bit dll from labview 8.2 on Windows7

Hello,
I have tried the LABview driver from the OMNIDRIVER (OceanOptics) package. But when calling functions from the “OmniDriver32.dll” , LABView is crashing and says that the memory is corrupted.
I am using LABVIEW 8.2 (32-bit) running on Windows 7 (64-bit). I have tried some LABView code examples given for LABview 7.1 and 8.0. These example are using the OmniDriver32.dll (not the OmniDriver64.dll).
But maybe these example are assuming that you are on a 32-bit operating system, which is not my case.
So I have tried calling the OmniDriver64.dll. but LABView seems not to recognised the dll and can’t read the included functions.
Is there a way to call some 64-bit dll from LABview 8.2 ?
Or do I need to buy a new license for LABVIEW 64-bit ?
Thanks,
Pierre

There is no virtualization support for DLL bitness issues outside of the Windows standard directories. The Windows and System directories that an application "sees" depends on its bitness. All other directories are not mapped depending on the calling process' bitness.
So if you have installed 32 Bit LabVIEW and are not calling one of the system DLLs, you have to point the path of the DLL to the real 32 bit DLL. Pointing it to a 64 bit DLL should not even be able to get the VI compilable, since Windows will refuse to load the DLL into the 32 bit process as being an unknown file format, and that should make the VI broken.
If you need to call a system DLL you simply enter the DLL name without path and Windows will find the according DLL for LabVIEW.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Does creating a labview dll from simulink model require visual studio

I've asked the same question at the Simulink forums, but maybe someone here has the answer:
I'm trying to perform this process here:
http://zone.ni.com/devzone/cda/tut/p/id/3447
However, I get the following errors from the Simulink Real Time Workshop:
Error building Real-Time Workshop target for block diagram 'SensorCAN_sfcn'. MATLAB error message:
Error using ==> setup_for_visual>LocIssueMSDevError at 324
Invalid setting for environment variable MSDevDir or DevEnvDir.
The setting is: ''
You can verify the setting by checking for the existence of:
%DevEnvDir%\..\tools\vsvars32.bat          (for Visual C/C++ 7.1)
%MSDevDir%\..\..\vc98\bin\vcvars32.bat     (for Visual C/C++ 6.0)
%DevEnvDir%\..\tools\vsvars32.bat          (for Visual C/C++ 8.0)
I do not use Visual C, what little programming I do has been done in Borland Builder or with command line gcc. Is there any way to make simulink look for a different dev environment? Or does this process require Visual C?
Solved!
Go to Solution.

Thanks, I've got SIT 5.0 installled, but it turns out we have a site license for VS 2008, so I now have that as well. I've got a new problem though, and although I think it's related to Simulink, these forums seems a little more responsive than that Matlab forums. So....
I’m working with someone else's s-code, and I haven't used Simulink in the past. As I said in my original post, I am attempting to use SIT to turn the s-code into a dll for use in a LabView RT application. I opened the mdl file in Simulink, and I’m now trying to build the LabView dll in the Simulink Real Time Workshop. The target file is nidll.tlc and Matlab starts the SIT when launched, so it appears the tools are aware of each other. However, when I attempt to build the dll, I get the following error:
fatal error C1083: Cannot open include file: 'rtlibsrc.h': No such file or directory
I’m using the following: Matlab 2008b, SIT 5.0, and MS Visual Studio 2008, so the libraries and includes should be fairly up to date. What I don't get is that the files that are calling for this include are auto-generated by Simulink, so I don't know why it's not finding the rtlibsrc.h. Still, I found that in the RTW subdirectory, and copied it into my local directory. This gives me a different error:
### Linking ...
C:\PROGRA~1\MATLAB\R2008b\sys\perl\win32\bin\perl C:\PROGRA~1\MATLAB\R2008b\rtw\c\tools\mkvc_lnk.pl SensorCAN_sfcn.lnk SensorCAN_sfcn.obj rtGetInf.obj rtGetNaN.obj rt_logging.obj rt_matrx.obj rt_nonfinite.obj rt_printf.obj rt_sfcn_helper.obj nidll_main.obj rt_sim.obj SensorCAN_sfcn.res SensorCAN0_sf.obj
link /RELEASE /INCREMENTAL:NO /NOLOGO -entry:_DllMainCRTStartup@12 -dll /NODEFAULTLIB:MSVCRT LIBCMT.LIB kernel32.lib ws2_32.lib mswsock.lib advapi32.lib @SensorCAN_sfcn.lnk /dll -outensorCAN_sfcn.dll
   Creating library SensorCAN_sfcn.lib and object SensorCAN_sfcn.exp
SensorCAN0_sf.obj : error LNK2019: unresolved external symbol _rt_Lookup referenced in function _mdlOutputs
Again, self-generated code, now with unresolved external symbols? I'm assuming that I'm linking the wrong version of a dll or obj that contains mdlOutputs, which appears to be something from Matlab. Can anyone point me in the correct direction? Missing headers and incorrect libraries lead me to believe that I've got a search path issue somewhere, but the Matlab/Simulink/LabView/Visual Studio are all fresh default installs.

How to call a c++ dll from oracle

plz can someone help me how to call a c++ dll (not ocx coz 10g cant see ocx) from oracle 10g ?
Edited by: jihad jag on Apr 23, 2009 1:40 AM

I guess your request is timed out but to call shared libraries look for 'External Procedure Call' in Oracle documentation.

Calling a LabView DLL from VB

Similar Messages

Maybe you are looking for