call the library by mistake Idso feature side

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• Call the library feature not filling in DLL functions

  I have a DLL (written in VB) who controls some 3rd party hardware.

  They have some (very bad) documents that has a few functions in the DLL as well as input parameters.

  I am using the library function node call in LabVIEW to open the DLL so I can take care of everything in LabVIEW, but for some reason it is not properly populating the list of the functions of the DLL. When I browse to the DLL and fall to the bottom of the list of functions, all I get is this

  

  Those who are not functions in this DLL. In fact, if I go to any DLL in the folder, they gave me, these same 4 functions are listed every time. I'm doing something wrong?

  According to me, this indicates that your DLL is actually an ActiveX, not a standard DLL object.  Drop Automation open on your diagram, create a constant for the Refnum Automation of entry, right click, select ActiveX class...-> go, then click on the Browse button in the dialog box (it may take a while to open) and find your DLL file.  See if that gets you a list of objects in the DLL.

• Call the library function does not find the DLL in the directory where are my LLBs

  I'm using LabVIEW 8.6.  I have a set of screws in several LLBs.  All LLBs located in a directory.  Most of my screws is wrappers for the functions in a DLL.  I was told to put my DLL in the directory where are the LLBs, and apparently this is how the previous programmer has worked (using an earlier version of LabView).

  In the configuration of the library call, I've specified .dll without path.  (This is how we want our screws are an API that will integrate other programmers, so I don't know where they put things and I can't use absolute paths).

  When I insert the VIs in LabVIEW, LabVIEW can not find the DLL and wonder of spotted.  It's just that here in the directory with the LLBs and when I double click on it, everything works fine.  However my absolute path to the DLL now appears in the library to call configuration, and we don't want that.

  Does anyone know how to make this work?  I guess the location of the screw (or LLBs, in this case) should be the current directory and thus Windows search there for the DLL.  However, it seems that this is not the case (in the least, in the latest version of LabVIEW).

  Thank you.

  Batya

  Well someone using your library should not have to dig into your screws and do it all on his own. Instead your library must wrap that and hide disorders it altogether.

  The cluster of error has been added when the dynamic path option has been added. It is not useful hide this error output, so it's always there. As well as the dynamic path, there was the improved error handling added the CLN. One of them is that the level of verification when calling function errors (exception handling) can be specified. I guess that some of these options may generate an error code instead of bring up a dialog box, as they did before and that the output of error code can be useful even in the case of static calls.

  As to what you want to do, I would have long managed that with a DLL that has essentially the same functions as your other wrapper DLLs and an initiliasation function that returns a pointer to a structure of functional distribution based on the actual DLL you want to call. Quite like what an object-oriented function dispatch table is. Then, when your interface initilising you call initialize function and specify the device interface/type that you want to use and after that all other functions take a pointer extra function parameter expedition as the first parameter, in addition to the parameters of the real function. This dispatch function pointer would be just a pointer to a structure that contains the table of function for this interface pointers and the sake of LabVIEW would simply be an integer of size pointer.

  The wrapper function then checks the pointer structure validity send feature and call the actual function with the remaining parameters. It is a C programming and may require a planning and desigining the different interfaces to facilitate this kind of technique of the expedition, but it will certainly pay to long-term and make your library even can be used in previous versions of LabVIEW, so that VB etc. without delicate dynamic loading in the level high, programming environment.

  Rolf Kalbermatter

• Error 7 only during the executable to call the library node function

  Hello

  I'm having some trouble with LabVIEW, creating an executable work of my application. The program communicates with a sensor of moving laser Keyence LK-G5000 series with drivers provided by Keyence. When you run the program in the development environment, the program runs without any problem. However, when the construction program and run the program with an executable file, the program generates error 7 as shown below:

  

  After looking through the previous posts on error 7 and executable environment on the forums AND I found that a lot of people mentioned that the development environment and runtime environment use different path structures. I also found a guide of NOR to solve this problem here:

  http://digital.NI.com/public.nsf/allkb/FD7DE8BC8FFC256C862565F4006BE363

  However, after following these instructions, I always get error 7 only when executing the program in an executable environment.

  I've never used any .lvlib library in the past before, so I don't know if this may have been the issue (it was provided by Keyence.) The library includes 2 private screws that can only be called within the library, so I don't think I can go without using the library. There are screws in the library that use the DLL files (which are also included in this same library) through the node library function call in LabVIEW that appear not to be included when I create an executable file. Adding even manually the DLL files to the folder where the executable generates the same error 7.

  Is this what I remember in my code to allow the program to function within the executable?

  Fasteners are drivers for Keyence, my top level VI (GeoREF-Keyence controller.vi) and all my sub live

  Best regards

  Victor

  Executables are taking a different path, as a start to debug the path as an indicator and see which path is being planned in executable mode?

• Exception in the external code called by calling the library function node problem

  Hello, I am a complete newbie in LabVIEW and need help. I have run tests of reliability and get this error about 2000 cycles. The code sends the digital output of a cylinder which operates the actuator downwards, he reads a signal of the thing I'm testing. Then there is a signal to then drive the actuator to the top and repeat. After about 2000 cycles, I get the error:

  [LABVIEW: an exception occurred in the external code that is called by a node call library feature.] It might have corrupted the memory of LabViews. Save all work to a new location and restart LabView. VI "Footswitch.vi" was arrested at the node 0 x 0 of the Subvi "DAQmx Start Task.vi 7"]. "

  I created this code without any prior knowledge of LabView, so I know it's not good, but it does not have (somehow). Any help would be greatly appreciated. Thanks in advance. I am also attaching the VI.

  cstemm,

  There are a few obvious errors in the code that must be addressed.  First of all, I'm not sure how your code even survived 2000 cycles, you have a Boolean value enter these while loops:

  

  What happens if you read a false? The curls will be stuck in an infinite loop... as the value read from the tunnel will never change, and the stop condition will always be "false".   I think that what you do... was keep reading the numerical value until it is true, so it's what needs to be in a while loop.

  Now, the problem you are experiencing is most likely a result of mass overload of start/stop tasks.  For these digital readings, simply start the task once and stop the task once. Run the start task until your main loop work... reference col in the task and read when you want to. Then, when the main loop is completed, go to this thread of task outside the while loop to clear tasks and stop.

  Programming paradigm is generally (there are exceptions):

  Initialize (startup tasks, the initial set of controls, etc.) -> the main loop (here, most of the code is readings/writings/calculations)-> References(stop tasks, clear data, close any open file references) close

  You don't do any reads buffered of digital lines, so no need to ever stop or restart the task, it gives you just a value whenever you call playback vi.

• How to call the library classes threw xml

  In my flash library has "MC."

  var XML = < m c = 'MC' > < / m >

  How to call MC class threw xml.

  It's a little cryptic, but I think you mean like this:

  import flash.utils.getDefinitionByName;
  import flash.display.MovieClip;
  
  var xml:XML = ;
  
  var classRef:Class = getDefinitionByName(xml.@c) as Class;
  var movieclip:MovieClip = new classRef() as MovieClip;
  addChild(movieclip);
  

  --

  Kenneth Kawamoto

  http://www.materiaprima.co.UK/

• Where is this mysterious "Show all bookmarks" tab so I can get to the library to export?

  I am so enraged! When I click on my favorites bookmarks already show. There is no option anywhere to "show all bookmarks" tells me that the help section will lead me to a library, so I can export to an html document. Why not have just one button export! @!!!???

  Firefox 3.6 might have had different names in the menu. If you look at the top items, do you have that refer to management or organize the bookmarks?

  Also, try the command + shift + b to open the bookmarks Organizer (now called the Library dialog box).

• How to avoid using the library native ttJdbcCS when connecting to remote host?

  I'm testing the Java program with the product that limits the use of native libraries.
  I use the 'client' mode to connect to TimesTen DB (which is done by using the plug, not the shared memory).
  
  It seems that even in client mode TimesTen JDBC driver calls the library native ttJdbcCS when doing remote queries.
  Why it does not use Java sockets? What is necessary for the native library?
  Is it possible to eliminate the use of native libraries in client mode of the JDBC TimesTen driver somehow?

  I fear that it is not possible to eliminate the use of native code for TimesTen libraries. Both direct drivers and customer are drivers of type 1 (JDBC/ODBC bridge). In both cases the JDBC driver Java code called NYI optimization library ttJdbc/ttJdbcCS and that the library in the direct or client ODBC driver (also called native code).

  If you want to use TimesTen then you must be able to allow the use of these native code libraries. The only other alternative is to implement your own client/server mehcanism such that you can put your own component 'server' on the machine running TimesTen and then use pure Java to communicate with this component of the 'customer '. Generally, it is however a lot of work.

  Chris

• Double click on the Bookmarks button to open the library window directly ("Show all bookmarks" feature)

  I have a number of folders in the bookmarks, and I frequently change it by clicking on "Show all bookmarks" and by opening a library.
  Earlier, after you click the Bookmarks button, "show all bookmarks" appeared on the top of the list, and now he's down.
  Please, add a double-tap on the Bookmarks button function so that it opens the window of the library directly.

  You can ask for a bug to get this feature if nobody has already done it. But change will have been carefully studied, and it is unlikely to be reversed.

  What you could also do, is add a comment with your feedback

  • https://input.Mozilla.org/en-us/feedback

  If you want to return to a mote of style like Firefox 28 or e = earlier consider using addons

  • How to make the new look of Firefox as the old Firefox
    • https://addons.Mozilla.org/firefox/addon/classicthemerestorer/

  Note We are other users Firefox NO developers and decision makers. Decisions relating to the development and discussion of politics or or feature requests are irrelevant.

• I just updated my software on my mac to capitan and downloaded pictures from my i phone in my library. The photos are displayed correctly in the library, but when I download on eBay, Kijiji, Web site, they are on the side here.

  I've just updated my software on my mac to Capitan 10.11.4

  I had no problems until now when downloading pictures from my i phone, which is also aware of the software updates.

  Since the mac update, I now have problems with uploading photos.

  The photos are transferred to the library and are displayed as it should, however when I try and add photos on Ebay, Kijiji, or my site the photos are displayed on the side here.

  I can't upload photos on Autotrader at all now!

  I have tried to turn the photos in the library, in order to temporarily solve the problem, but the photo then displays exactly how she has changed.

  Help, please?

  How do you access download?

  try this select them in PHotos and export to a folder on the desktop - check the with preview to be sure they are correct and then download the desktop folder

  LN

• How does the library function call Labview? Can I emulate using C++?

  Hi all. I recently finished writing a dll CUDA for LabView, and now I'm in the steps of optimization of code, memory management, etc. BUT since my code depends on the entries of Labview (lots of data under types of specific data as table manages and Clusters labview) I can't use the CUDA Profiler or the Profiler VC ++ on the DLL. What I intend to do runs labview and then out of all data entry for the DLL in a binary file and then add an additional function in my code that will read in the binary file, allocate and assign variables to their respective positions, and then call the specific DLL function in Labview. In the end, this miniature function will act as the library function call to my specific group of data entries.

  In any case, I started to make this purchase all my data entry of cluster and it comes out in a binary file. And then I started the initialization of the handles of labview, allocating memory and begins to write the binary data in the memory and it works for integers (ints), floats, etc., but I'm confused on how it works with table handles!

  Some examples of code:

  Sets the Handle for table 1 d for INT
  
  typedef struct {}
  
  	int length;
  
  	int val [1];
  
  		to access the value in a row-online val [Online]
  
  } Array1dInt, * Array1dIntHandle;
  
  int main()
  
  {
  
  	Array1dIntHandle x = new Array1dInt *;
  
  	(* x) = new Array1dInt;
  ifstream file ('TESTDATAIN.dat', ios: in | ios::binary);
  If (file.is_open ())
  
  	{
  
  		file ((char *) &(*x)-> length, sizeof;)
  
  		file ((char *) &(*x)-> val [0], sizeof (int) *(*x)-> length);
  LabviewSpecificFunction (x);
  
  		leader. Close();
  
  	} else
  
  	{
  
  		< "file="" did="" not="" open!"=""><>
  
  	}
  
  	return 0;
  
  }
  __declspec(dllexport) LabviewSpecificFunction (Array1dIntHandle x)
  
  {
  
  ...
  
  }

  However, my program crashes when the table is nominally big, and it is expected, because if we look at the Array1dHandle, it has allocated only enough memory to 1 item of value! YET, somehow, in its magical and mysterious labview is capable of making val [1] be val [HOWEVERMANYYOUWANT], even if C++ 101 says that val [1] is a constant pointer, and even if I dynamically allocated memory another somwhere, I would never be able to put these data in this round!

  Can you explain, or maybe even write example on how I can fool my program into thinking that the binary code comes from labview, so I can then run my program independent of allowing me to profile the functions inside labview?

  I hope that this question is clear and my sample code is also clear, but I'm happy to answer any questions that relate to this.

  Thank you all!

  I think that I thought about it.

  Array1dIntHandle x = new Array1dInt *;
  int tempsize;
  
  file ((char *) & tempsize, sizeof;)
  
  (* x) = (Array1dInt *) malloc (sizeof (int) + sizeof (int) * tempsize);
  
  (* x)-> length = tempsize;
  
  file ((char *) &(*x)-> val [0], sizeof (int) *(*x)-> length);

  Well enough, you will need to make the handle, and then make a new Array1dInt * for him, then read in the length of the array in a temporary variable. Then use this information to then malloc memoery quantity you need for the table and pass this place on the handle. Now the handle will point to the size of the memory and you will be able to access the memory in the format, you've done the handle. Badabing badaboom

• When I use the library function node call in real time, is loaded only once for all or load the DLL whenever it is called?

  When I use the library function node call in real time, is loaded only once for all or load the DLL every time when it is called?

  I have a critical application in real time, in which I use a piece of DLL function developed in C++.  It is ok?  Make sure any senior developer?

  Thank you in advance.

  The user interface thread is the thread that is used to update the user interface. It's slow. And it's supposed to be that way because humans are slow.

  The call library function node can be configured as this thread to use in the configuration for it dialog box. Please visit the LabVIEW documentation on how to do this.

• Despite indicating to the path, still have manually pointing DLL every time LV works using the library function node call

  I use the node of the library function call in LV 8.6. I checked the path to specify the box diagram and made directly in the DLL file that I use. Whenever I have started with Labview, I have to go to the diagram and physically find the DLL in one of my calls to make it work properly. Once I have do this everything seems to work as expected. Anyone else see this issue? Any suggestion would be appreciated.

  Thank you

  Steckman wrote:

  I use the node of the library function call in LV 8.6. I checked the path to specify the box diagram and made directly in the DLL file that I use. Whenever I have started with Labview, I have to go to the diagram and physically find the DLL in one of my calls to make it work properly. Once I have do this everything seems to work as expected. Anyone else see this issue? Any suggestion would be appreciated.

  Thank you

  Probably that DLL does not depend on other DLLs that reside in the same directory you point to in the configuration node dialog box call library. What is happening is this:

  Without going into this directory:

  LabVIEW applications Windows to load the DLL, Windows detects that it needs to load other DLLs and can not find in its standard search sites:

  (1) already loaded into memory

  (2) in the application directory (where the exe that began the current process resides in the LabVIEW IDE would be where is LabVIEW.exe)

  (3) in the system directory

  (4) in the Windows directory

  (5) any directory in the PATH environment variable contains

  (6) in the directory 'active '.

  Because Windows cannot find a person to load DLL he abandoned the main DLL loading and returns an error to LabVIEW.

  Now, you go to the configuration dialog box and point to the DLL. The dialog box browse file in LabVIEW uses the standard OS dialog box and this dialog box has the behavior obnoxious always update the "current" directory in the directory where a file got selected in. LabVIEW sees now that the path has "changed" and asks again to load the DLL. Yet once, Windows detects that it needs to load other DLLs too for this DLL but this time going over the search order, it will actually hit the DLL in the same directory and that's all fine.

  It is certainly NOT a problem of LabVIEW. LabVIEW does not and should not really need to know that a DLL needs other DLL loaded and more importantly should never try to think he can do better than Windows, it probably could, but is simply not his task of dependency DLL loading.

  It is your responsibility as a programmer and user of this DLL to know its dependencie, and if you did not write the DLL, to hit the original on his head programmer, if it has not documented these dependencies and make sure that these dependencies are actually properly resolved for Windows placing them in one of the places mentioned above

  ((2) is generally the best location for applications applications because it will not pollute the Windows directory or the user of the application system and 5) is the best for the development machine as you can add a directory to your PATH environment variable where you put the dll you need to develop a specific application.

  Rolf Kalbermatter

• How to use the node to call a library function to convert C++ source codes

  Hi all

  There are two dll name 'QMSL_WLAN_Transport.dll' and 'QCAMSL_MSVC10R.dll' and some codes c ++ to connect to the DUT. The two DLLs work together for communicaite with the DUT.

  I am confused as how to use the node to call a library function to load the 'QCAMSL_MSVC10R.dll' function as

  g_hResourceContext = QLIB_ConnectServer_UserDefinedTransport((HANDLE) USER_HANDLE,
  UserDefinedSend,
  UserDefinedReceive,
  UserDefinedFlushTxRx,
  true,
  true);
  

  It seems that 'UserDefinedReceive, UserDefinedSend, UserDefinedFlushTxRx' Processaddress?  And "UserDefinedReceive, UserDefinedSend, UserDefinedFlushTxRx"'s functions in 'QMSL_WLAN_Transport.dll '.

  UserDefinedReceive = (_UserDefinedReceive)GetProcAddress(hUDT,"UserDefinedReceive");
  UserDefinedSend = (_UserDefinedSend)GetProcAddress(hUDT,"UserDefinedSend");
  UserDefinedFlushTxRx = (_UserDefinedFlushTxRx)GetProcAddress(hUDT,"UserDefinedFlushTxRx");
  

  Attached DLLs and C++ code snippets.

  Need help.

  Thank you.

  These parameters are reminders - pointers to functions that are called by the DLL - and there is no way to duplicate this purely in LabVIEW. Search this forum for the word "recall" and you will find similar questions (for other DLLs). You will need to write your own DLL (in C, C++, etc.) that implements these functions and provides a way to transfer data to LabVIEW.

• Dial the node library with cluster table feature using the pointer of table data

  Hi all.

  I am writing a wrapper of LabVIEW for an existing DLL function.

  The service was, as one of its parameters, an array of structures.  The structure is very simple, containing two integers.  I use the call library function node to access.

  In Labview, I created an array of clusters, when the cluster has two integers of 32 bits as members.  So far so good.

  Now, I have to pass this in the node library function call.  I use here in trouble.

  I used the LAVA so the topic in the knowledge base as my main sources of information, although I read a lot of topics in the forum on the subject too.

  I don't understand I could write a new function that takes as a parameter a struct with the size as the first member and an array as the second, and I might just do this and do call the regular service, but I was hoping to do more simply.

  The file function C LabVIEW generates for me the COLD Lake when I choose "To adapt to the Type" and "Data in the table pointer", the prototype he expects is:

  int32_t myFunc (handful of uint32_t, uint16_t channel,
  int32_t FIFOnumber, Sub data [], int32_t numWords, int32_t * actualLoaded,.
  int32_t * actualStartIndex);

  And the prototype of the function in my DLL is

  int myFunc borland_dll (DWORD channel, channel of Sina,)
  FIFOnumber int, struct mStruct * data, int, int numWords * actualLoaded, int * actualStartIndex);

  It sounds like a match for me, but it doesn't work (I get garbage in the data).  The topic referenced above LAVA, I realized it would work.  This isn't.

  If I have to cast the data to the pointer-to-pointer I get when I generate c code in my wiring to a CIN struct and by generating, then I seem to get what I expect. But it seems to work when I choose "pointers to handles" too, and I'm expecting data table pointer to give a different result.

  Is it possible to get it works directly, or I have to create a wrapper?  (I am currently using LabVIEW 2011, but we have customers using 2009 and 2012, if not other versions as well).

  Thank you.

  Batya