Link DLL C++ in LabVIEW

Similar Questions

• can I create a DLL file for labview that has DLL library with inside?

  Hello everyone,

  I am developing an application for the cards PCI devicenet in labview (beginner to labview) environment.  Is there a DLL file for the PCI card from the provider. But it's too complicated for a beginner to call each function in the DLL of labview. Therefore, I'm trying to re - use a VC ++ program (working properly) that calls some sellers DLL library functions.    To do this, I created the DLL file which includes all headers and libraries the provider DLL, as indicated in the attached figure. But I couln can't see the effect on the device. is it possible to create a DLL file for labview that has DLL library with inside? If this is not the case, how can I implement the program shown in figure?

  I would like to wish a huge as to advance.

  It is not something I have a lot of experience in so I don't know all the details of the restrictions or requirements etc - but it is certainly possible to create wrappers for the dll and then use them in LabVIEW - this is sometimes necessary to convert some native types/data structures in C/C++ into something that you can switch to your other DLL LabVIEW.

  There is a link here: http://digital.ni.com/public.nsf/allkb/06ECDC689DDA0F3D862574440074CD95

• Call dll ActiveX in Labview

  Hello

  I'm a new starter in c# .net.  I have a control dll ActiveX (control of vision of NOR -> CWIMAQ). I need to call dll functions in Labview. I searched for articles on this subject. Everyone talks about single thread and register the dll.  I have no idea about these things. Can any body give me a helping hand. How does it work?

  Thanks for any info

  Best regards.

  To use an ActiveX control in LabVIEW, you place an ActiveX container on the front panel and locate the control to put it in. Then use the nodes property and/or call nodes of the ActiveX palette to set properties and call methods.

  To register a DLL open a command prompt, navigate to the folder where your ActiveX control is normally the Windows system32 folder and type

  regsvr32 .

  In LabVIEW use help > type in the search and find examples... tab ActiveX.

• call dll driver in labview exe

  I have an instrument driver in LabVIEW.  The driver still functions call a DLL in instr.lib through the call library function.  When I compile an exe file that uses the driver functions, where should I put this DLL?  He would be allowed to compile the DLL in the exe?  If it's ok, how it works, because the driver get the DLL in instr.lib?  Thank you!

  You can not choose the exe as a destination of the DLL. Yes, the DLLS are located in the folder data.

• LabVIEW created DLL that uses Labview live integrated Toolbox "DFD" (Digital Filter Design)

  We were using a Labview created the DLL file that uses the screws of the DFD Toolbox, but were not able to operate at all. Now, we have replaced the DFD screws with screws that built us, and the DLL file works fine. Is there a reason for this?

  Even if it works, this process is medium long and it's a waste of time because the DFD screws are already being implemented, so we need a quick fix for this, any suggestions.

  When you use the DLL that uses the DFD screws, it always seems to be a failure when loading the DLL file specific screws, anyone know why? Screw looking for Labview is in a way that looks at "DllFileLocation.dll------Labview 2009------vi.lib------...» "

  Thank you

  Walid Farid

  
  

• Call a dll built with Labview in Digital Micrograph

  Hello everyone,

  I am faced with a difficult problem. I use Digital Micrograph that run the DLL of enforcement. This DLL must be built with a structure of library written in C. In this C code, I can call a built with Labview VI. If the Vi is simple, Digital Micrograph is happy. But, if I include a graph in the VI, C code builds and create a dll but Digital Micrograph falls down. Of course, DM is unclear the type Labview graph. I can do what I want in my VI and how can I solve the problem?

  Thank you.

  Gautier

  gautierdufourcq wrote:

  I solved part of the problem, DM do not plant more but the Labview graph is not displayed. Do you have a solution? THX

  Is not a problem of LabVIEW.

  It's their DLL. Talk to DM.

• Implement the Std::Vector < < Point2i > > Std::Vector in dll wrapper for LabVIEW

  Hi, I'm writing a wrapper dll that using OpenCV function. I had been sucessfully implement Std::Vector by referring to "An array of clusters to a dll C sending".

  And now, I want to implement the Std::Vector<>> who is a lot like table 2D but each line items may be different.

  In LabVIEW, I attribute a range of cluster of the dashboard cluster of 2 I32 elements, structure which is shown below:

  

  I think it has the same functionality as Std::Vector<>> in C++.

  So I plug this data on the "Call library function node" structure and generate C code that indicated below:

  /* Call Library source file */
  
  #include "extcode.h"
  
  /* lv_prolog.h and lv_epilog.h set up the correct alignment for LabVIEW data. */
  #include "lv_prolog.h"
  
  /* Typedefs */
  
  typedef struct {
      int32_t elt1;
      int32_t elt2;
      } TD4;
  
  typedef struct {
      int32_t dimSize;
      TD4 elt[1];
      } TD3;
  typedef TD3 **TD3Hdl;
  
  typedef struct {
      TD3Hdl elt1;
      } TD2;
  
  typedef struct {
      int32_t dimSize;
      TD2 elt[1];
      } TD1;
  typedef TD1 **TD1Hdl;
  
  #include "lv_epilog.h"
  
  void funcName(TD1Hdl arg1);
  
  void funcName(TD1Hdl arg1)
  {
  
      /* Insert code here */
  
  }
  

  Then, I write this code show below in dll wrapper:

  void funcName(TD1Hdl Blobs)
  {
      vector < vector > blobs;
  
      // Distribute contents of blobs to Blobs from LabVIEW
      MgErr err = mgNoErr;
      size_t arraySizeInBytes = Offset(TD1, elt1) + sizeof(TD2)*blobs.size();     // Determine row size
      err = DSSetHSzClr(Blobs, arraySizeInBytes);
  
      if (err != mgNoErr)
          return;
  
      (*Blobs)->dimSize = blobs.size();
  
      for (size_t i = 0; i < blobs.size(); i++) {
          arraySizeInBytes = Offset(TD3, elt) + sizeof(TD4)*blobs[i].size();  // Determine col size of each row
          err = DSSetHSzClr((*Blobs)->elt[i].elt1, arraySizeInBytes);
  
          if (err != mgNoErr)
              return;
  
                  /*......................*/
          }
  }
  

  When I call LabVIEW dll, the program get interuption(i.e shutdown) on line where I want to determine the size of each row.

  Could someone give me some suggestions on this subject or promote another application of this requirement?
  Thank you very much.

  MgErr funcName(TD1Hdl Blobs)
  {
      vector < vector > blobs;
  
          Labeling(image_binary, blobs);         // the prototype of this function is: Labeling(Mat &binary, Vector> &blobs)
  
      // Distribute contents of blobs to Blobs from LabVIEW
      MgErr err = mgNoErr;
      size_t arraySizeInBytes = Offset(TD1, elt) + sizeof(TD2)*blobs.size();      // Determine row size
  
          if (contours == NULL)        {                Blobs = (TD1Hdl)DSNewHClr(arraySizeInBytes);                if (Blobs == NULL)                         err = mFullErr;        }        else                err = DSSetHSzClr(Blobs, arraySizeInBytes);
          if (err != mgNoErr)                return err;    for (size_t i = 0; err == mgNoEerr && i < blobs.size(); i++) {
          arraySizeInBytes = Offset(TD3, elt) + sizeof(TD4)*blobs[i].size();  // Determine col size of each row
  
                  if ((*Blobs)->elt[i].elt1 == NULL)                {                        (*Blobs)->elt[i].elt1 = (TD3Hdl)DSNewHClr(arraySizeInBytes);                        if ((*Blobs)->elt[i].elt1 == NULL)                                    err = mFullErr;                }                else               err = DSSetHSzClr((*Blobs)->elt[i].elt1, arraySizeInBytes);
                  if (err == mgNoErr)                {                        (*((*Blobs)->elt[i].elt1))->dimSize = blobs[i].size();
  
                          /*......................*/
  
                  }
          }
          (*Blobs)->dimSize = i;        return err;}
  

  Personaally I've usually done like this. Already, the tar of DSSetHSzClr() indicates if there was something wrong and that the handle cannot really become NULL to call this function.

  To be entirely correct and safety integrated, you must do more than that. But as long as you assume that the incoming picture is always smaller that the outgoing Board will be (usually it be 0 items when you enter this function, but if you reuse sort table in the diagram, by storing it in a registry change for example, this may not be true more) this will be enough.

• Can I Developer studio (C++ programming language) in my computer when I call a dll through my labview?

  Thanks in advance...

  In other words, the computer that I use for labview doesn't have a C++ program installed... I think it is to convert my C++ code into a dll into another computer and use this dll in the computer that has labview... So is it possible? or the computer with labview installed must have C++ program...

  Kind regards...

• My system crashed and I got this message "c\windows\system32\nvcpl.dll - a dynamic link (dll) library initialization routine failed.

  Original title: c\windows\system32\nvcpl.dll

  My system crashed and somehow, I was able to find it. c\windows\system32\nvcpl.dll - a library (dll) dynamic link initialization routine failed. Complete reinstallation of my netbook, it worked for 1 day and then resurfaced. Then it happened to my office. I can't get into my netbook to solve it without a complete reinstall, and if it works only for 1 day again then it's a waste of time. Help, please.

  Hello
   
  'c:\windows\system32\nvcpl.dll' is the NVIDIA Display Properties Extension.
  I suggest that you follow these steps and check to see if they help.
  Step 1:
  Start your computer in safe mode and check if you get the error.
   
  Step 2:
   
  a. your video card drivers probably needs to be reinstalled. Visit the manufacturer of the laptop computer support Web site to download the correct adapter for your specific model of laptop drivers.
  b. obtain the latest driver for the chipset and update the BIOS as well.
  
  Warning of the BIOS:
  BIOS change / semiconductor (CMOS) to complementary metal oxide settings can cause serious problems that may prevent your computer from starting properly. Microsoft cannot guarantee that problems resulting from the configuration of the BIOS/CMOS settings can be solved. Changes to settings are at your own risk.
   
  Step 3:
   
  Before installing, uninstall the old drivers.
   
  a. click on start
  b. Control Panel,
  c. open the applet, add / remove programs
  and look for your video drivers uninstall.
   
  Step 4:
   
  After you install a new set of drivers.
   
  a. right-click on your desktop and select Properties
  b. click settings, change the color quality "highest (32 bit), then adjust the resolution of your screen to your liking, then click on apply.»
   
  Aziz Nadeem - Microsoft Support

  [If this post was helpful, please click the button "Vote as helpful" (green triangle). If it can help solve your problem, click on the button 'Propose as answer' or 'mark as answer '. [By proposing / marking a post as answer or useful you help others find the answer more quickly.]

• Cannot close the dump imaq link to imaq in labview

  Hi there and thanks for opening up this post

  I'm still new in machine vision. I'm working on a project in Labview, but I am not able to connect to the session of vi IMAQ grab to close the session in the IMAQ vi... LabVIEW tells me that the two sons are of different data types: the first type is IMAQdx.ctl, the second is a class IMAQ.

  Can you help me?

  Thank you

  Hello

  It seems that you use close IMAQ but have IMAQdx screw everything else. NOR-IMAQdx and NOR-IMAQ separated driver API, it should be consistent with what set of screw you are using. Since you use IMAQdx, you just use the palette IMAQdx closing.

• Need help with implementing DLL based on LabVIEW below call Lib

  Here is the list of C functions in the doc that I have, but I don't get the right result.

  I need help to understand how these features and how to configure it in LabVIEW

  Parameters

  voltType
  [in] Specifies a voltage detector to get the value of. There may be flags
  VCORE (1<>
  V25 (1<>
  V33 (1<>
  V50 (1<>
  V120 (1<>
  VSB (1<>
  VBAT (1<>
  VN50 (1<>
  VN120 (1<>
  ATV (1<>
  retval
  [out] Points to a variable in which this function returns the voltage in volts.
  Typesupport
  [out]
  If the value is specified as a (non-NULL) pointer to a variable, it will return the types of sensors available in indicators at the level of the ILO-ORed
  Return value
  TRUE (1) indicates a success; FALSE (0) indicates a failure.
  Remarks
  Call the function first with a typesupport non-NULL of the sensors available fan and a subsequent call to get the required voltage.

  Thanks to all...!

  I solved this problem.

  There was a problem in the configuration of the VoltType. We have a cluster of bits.

  Here is the screenshot.

  

• Error-18004; Access to the DLL of the LabVIEW Run-Time Error engine. TS 4.2.1 / LV 2010

  When I try to run a VI that is reentrant in an execution at the same time, I get this error.  The details of the error is: LabVIEW: the method or property is not supported in this version of LabVIEW.

  This is performed under the LV 2010 Simple operator Interface.  The TestStand engine is version 4.2.1 with runtime adapter 2010 LV.

  If I save to an earlier version to LV 2009 SP1, then assign the adapter TS 9.0.1 (2009 SP1), it works.

  Can anyone reproduce this error (bug?)?

  you have the latest updates for TestStand using LabVIEW 2010?

  http://digital.NI.com/public.nsf/allkb/7D728B70F167CE088625776E00582C7B?OpenDocument

• Error 1097 when calling DLLS in LabView

  I get an error 1097 when calling the LabVIEW provider library. Curiously, the error, the DLL routines still seem to do what is asked of them.  This is the test code.  It opens an Ethernet connection to a controller of axes Galil, he asks (possibly) the value of its internal clock, and then closes the connection.  Each call library function returns error 1097 but "valve function" I32 error number is always zero. Open function causes the connection to be opened, the command function causes the send command and receives a reasonable answer, narrow funtion seems to cause the connection to be closed.

  

  Here is what I see when I run the test:

  

  Also directly configure call-library functions, as I did in this VI, I also tried using the import-shared-library Wizard to create a vilib of functions of the DLL and I get the same behavior and errors when I use these functions.  I tried to tweak some of the data types in my configured manually call library functions to see if I could find a combination that worked better with the library, but had no luck there.

  I use the x 86 version of the DLL with v2014 LabVIEW 32-bit on a 64 bit windows system 7.  I see that the error on the two computer systems of different work configured in this way. I see a similar error on a home computer with just the RTE of 2014 installed. The manufacturer says they can not reproduce the error. I always saw the error over multiple versions of their library DLL.

  In the attachment ZIP it has a link to the DLL library on the manufacturer's website. There is also a copy of the VI, the DLL and a large part of how-to-use documentation that accompanies the DLL.

  I was hoping that someone who was familiar with the use of the call-library function might take a peek at what I do and see if an error could be spotted.

  Unable to find an error, I did, I would be happy to suggestions on how I could solve this. Little seems to me like there may be a problem with the library. The manufacturer, Galil, said that they have opened a log with OR to see if NEITHER could help but since Galil said they can not reproduce the problem and provide an example of the NC, it really went anywhere.

  Given the decoration of symbol names as exported by the DLL I "m convinced that you must change the stdcall calling convention.

• Ask for a link for Labview 2011 SP1

  I ask for the link to download the Labview 2011 SP1.

  I have a bug that corrects SP1 (damaged Panel before, cannot open vi, see the discussion http://forums.ni.com/t5/LabVIEW/LabVIEW-load-error-code-3-Could-not-load-front-panel/td-p/1895379/pa...), but the download link disappeared.

  Please, if anyone knows tell me the link to download (32 bit).

  I found it here

  http://download.NI.com/support/softlib/LabVIEW/labview_development_system/2011%20SP1/

  Anyway, there are a few problems with the link that you gave to me. I thank you all the same because what is happening is somethink wronk with national instruments site, which is not the same for all countries (web designers should check and fix the bug).

• How to read COM of DLL (Component object method) in Labview 8.6.1

  Hi all:

  Today, I found it difficult to read the COM (Component Object Method) in the DLL file in Labview. I've only managed to read a function exported in the dll file using the library call with Labview function block diagram, software programming. Please give me advice or solution to solve my current problem encounter. Thank you.

  The figure below is the way I recover the function of dll file. The function block manage only recover the function exported in the dll file.

  

  

  Hello

  I just want to share a solution that works for your problem:

  1. save the DLL in Windows
  -Go to \WINDOWS\system
  folder
  -Copy-paste your dll file in
  This file, TraceDataV28_test18.dll
  -Open the command prompt (cmd), go to the directory<>
  file > \WINDOWS\system and type REGSVR32
  'TraceDataV28_test18.dll '.

  

  -A pop-up window should appear to inform you that
  It has been registered

  2. use
  Node property/invoke:
  -Open
  LabVIEW
  -Drag and Drop invoke node to
  Range of functions > Application control > invoke node
  -Right click on it and Select
  Class > ActiveX > Browse...

  

  Find your DLL file, and you can choose what COM method you want
  use.

  

  Hope its helpful.

  Sincerely,

  Krisna