Calling a LabView DLL from a Labview VI
Hi, I have a vi that is calling a Labview DLL and they both have a same
subVI. If I drop that SubVI into the block diagram first then drop in the
Call Library Function Node, when I run the VI, the DLL would not work and
it did not give me any error. Does anyone know how fix this problem with
Labview? or is there some configuration that I can force the all of that
SubVI points into the DLL.
Thanks for your help,
...Error 1073 when building LabVIEW app which calls LabVIEW dll
I am trying to use application builder to build an application that
calls a dll created in LabVIEW. I get an error referencing a vi within
the dll (Parse Stored String(multibyte).vi) saying that "This property
is writable or this method is available only when the VI is in edit
mode." The only option is to Continue which cancels the build. I had
sucessfully built this application prior to including vis that call
the dll and the program runs fine in the development environment.
Do you have any idea what is causing this and what I cam do about it?
I have found a temporary workaround i...Labview Dll call library function Causing Labview to unload
I am trying to use the Call Library function in Labview 7.1 to call an Init function for a Zathic Can4USB device. When I run the vi, it complete log LabView out of the computer. Can anyone tell me why the function totally unloads LV without displaying an error?
Either the function has a serious bug or you are calling it with
invalid parameters or wrongly setup parameters. The problem happening
here is that your DLL passes somehow invlid parameters to a system
device driver and that driver causes a protection fault. For device
driver execeptions which happen in the privileged...How can I calling LabView DLL within LabView and pass similar Data Types?
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I am trying to use an Instrument Driver, which is created in
LabView6.1 as a DLL. At this point I have only LabView to test this
DLL. I was wondering, is there easy way to find out what sort of
Parameter or Data Type I should be using.
How can I pass the following data with in LabView:
LVRefnum as Type?
LVBoolean as Type?
TD1 (a structure) as Type?
It is funny to see that I am able to create a DLL in labview but
having trouble calling it within LabView. I th...build a DLL in LabVIEW & Use the DLL in LabVIEW
I am trying to build a DLL for the simple vi with LabVIEW and want to use the DLL in LabVIEW. is it impossible?
I wrote a vi and it have 2 terminals. one is the input for numeric dbl data type and one another is the output for numeric dbl 1D array data type.
It was built with the Application builder for LabVIEW 8.0 and DLL was created successfully.
I want to use this DLL in new vi with LabVIEW.
Call library function used. I wrote a new vi to use that DLL.
In config dialog I config each parameter for dll and connected terminals. b...change a LabVIEW array outside LabVIEW and keep updated in LabVIEW
change a LabVIEW array outside LabVIEW and keep updated in LabVIEW
I am Interfacing a FrameGrabber with LabVIEW using a frame grabber
The memory managment of this FG allow you to allocate your own Array
and to give a pointer to this Array to the memory manager.
Then when you acquire with the frame grabber, the acquired image will
be directly accessible in your array.
1.I give to the FG memory manager a pointer to the Labview array
through a SDK Dll function.
2. I run the acquisition
3. I display the array
My problem is that the Array is allways displayed with it initial
val...LabVIEW crashes when function called from DLL
I'm a relative new user of LabVIEW and looking for some help. I've posted this issue in another board and was unsuccessful. I was told to try it here.
LabVIEW crashes everytime I run it. The code (error.vi) contains a subvi (error2.vi) which calls a function and crashes. The information about the dll file can be found at the following site <a href="http://www.amptek.com/mcadll.zip" target="_blank"> http://www.amptek.com/mcadll.zip</a> . Hope you can help
http://forums.ni.com/attachments/ni/170/238711/1...Problem with lsb: LABVIEW.LIB was not called from a LabVIEW process
I've decided to compile the Zero Phase Shift.vi filter into a dll. This vi relies on IIR.lsb and IIR.c files.
There is no problems with running the vi itself. However, using a dll that was built from this vi generates a fatal Windows error message
LABVIEW.LIB was not called from a LabVIEW process (for example, if one tries to call the dll from within a VB program)
If I remove the lsb reference from the vi, then calling the dll has no problems. I have tried to reference the IIR.lsb explicitly from the Build Shared Lib wiza...Fatal Error
After creating an installaion program, I tried testing the install of my app. The application user interface appears with a Fatal Error dialog box stating LABVIEW.LIB was not called from a LabVIEW process.
Other information on this forum regarding a LABVIE.LIB error, usually mention some types of .dll calls, I have no such calls in my application so I'm curious if anyone else has a similar problem and hopefully a solution.
Development machine and test install system both XP Pro
Using LabVIEW 8.0.1
Thanks in advance.
&...Calling cygjpeg6b.dll crashes LabVIEW everytime, no matter...
Calling cygjpeg6b.dll crashes LabVIEW everytime, no matter the chosen
settings in Configure. Anyone know why?
I am trying to access the DLL cygjpeg6b.dll for fast internal
compression and decompression of images int jpegs (without saving to
files). I intend to use these compressed images to reduce network use
in a code written to pass images from webcams between two linked
I do not wish to use the IMAQ functions, hence my interest in this
However, no matter what I set in the Configuration for this DLL call,
LabVIEW crashes immediately on clicking OK. Anyone know why? I presume...Labview 8 crashes when using Read Labview Measurement File
I am a new user for Labview. I installed Labview 8.0 from the CD (evaluation copy). I was just testing the sample code provided by NI. I opened the "Load from File and Display" example and I was trying to open the properties for the Read Labview Measurement File component when Labview crashed. I tried it a couple of times and everytime it happens the same way (when I double click the component or right click on it).
I am using Windows XP with all the updates done. In the Windows crash report, the application version is 22.214.171.12405.
Other problem ...Labview 7 crashes when opening an earlier Labview version VI
Hello guys. I am using Labview 7 professional edition. The labview crashes when opening an earlier labview version VI. The error message I'm getting is just "Labview has encounted a problem and eneds to close. We are sorry for the inconvenience." The VI contains a few Tag SubVIs, and It is written with an earlier version of Labview(BridgeView is what it was called).
Do anyone have any ideas that how I can fix this bug? It's going to be a great help. Thank you very much.
LabVIEW should not be crashing in this situation. Now, does this happen for other simil...Transfering a struct in a struct form LabVIEW to a dll and get it back to LabVIEW
actually I've a big problem.
I'm calling a dll function through LabVIEW. The called function is defined isw defined as followed:
fcbGetEnumFlexCards( fcInfo** pInfo);
fcInfo is a struct:
typedef struct fcInfo
The Parameter fcDword is an unsigned int 32, but the Parameter Version which is decleared as fcVersion is also a struct:
typedef struct fcVersion
I am a new user of LabVIEW.
I have been assigned to acquire a signal from a sensor at a car.
However, all these signals must be filtered.
But I am not sure, what type of filter most powerful. Besides, as I
know, different type of signal needs differenct type of filter.
Anybody can help me to solve my problems.
Your kind cooperation is highly appreciated.
> Hi ALL,
> I am a new user of LabVIEW.
> I have been assigned to acquire a signal from a sensor at a car.
> However, all these signals must be filtered.
...Debugging a C++ dll from LabVIEW
What I want to get a feel for is how easy it is to set up the ability to debug code both in labVIEW AND in a C++ compiler, say Visual Studio.
If we have a situation where we have a c++ dll which we are accessing from labVIEW is it possible to attach the process so that you can set breakpoints in both environments. Hence run labVIEW app and when dll gets called hit a Visual Studio breakpoint?
This is a new area to me and I have not found anything regarding debugging. Any comments would be appreciated.
Hi,...how to make my labview codings as a package for labview
I made drivers for some thrid party instruments, which is compatable for serial port and Ethernet. I have several vi's for that i cant able to share these vi's to my friends.
i just want to build one package of my driver, also i want to install these package to labview user library.
Tell me some good suggestion for this.
With warm regards,
Application Engineer...Installation of LabView 8 after LabView 6
Good afternoon everybody,
I've got a big problem with LabView. The fact is that I begin with this software...
I've just installed LabView 8 on a computer where LabView 6 was installed. Once the installation finished, I tried to launch a VI That was developped under the old version.
The problem is that two VI can't be found :
- AI Sample Channel.vi
- AI Acquire Waveform.vi
Therefore, I can't use anymore the program that was working before... What is the solution to get everything ok please ?
Thank you very much !
the VI will now...Call function from dll in labview
I have to get data from USB camera, I have following functions in DLL.
DLLINOUT=09HANDLE =09WINAPI=09CC_Open( LPCSTR CameraName , ULONG
CameraNumber , CC_CAPTURE_MODE CaptureMode ) ;
DLLINOUT BOOL=09 WINAPI=09 CC_CaptureSingle( HANDLE Cam , PVOID Buffer ,
ULONG TransferSize , CC_TRIGGER_MODE TriggerMode , USHORT TimeOut ,
OVERLAPPED * pUserOverlapped );
When I open hardware with function cc_open I am getting handle to an
object. How can I store this object and pass it to CC_CaptureSingle
Another question is when I call CC_CaptureSingle I am getting pointer
on the 2 ...Calling a LabVIEW DLL from Delphi
I have created a DLL in LabVIEW 7.1.1 which communicates over seriel line with a tester. This DLL is an interface of a "device driver" which is used in an LV app successfully. This driver is built as Active-X server and DLL. I have created example programs in LV, Visual Basic and Visual C++ single thread and multi threaded. All those examples work fine. For the DLL version I have used the delay load feature of MS Visual Studio. One of my customers is programming in Delphi and he get an error whenever he is starting his application. It seems the error occurs during loading the DLL. He...Problem about calling a DLL in LABVIEW
I have a problem using Labview to call a DLL file, when I call the function " commandinterp() in labview, labview will always return error message"an error occured in external code, it might have corrupted labview memory..." attached is the DLL file and the labview code .so did the code i attached have any problem? or is it the problem of the DLL? thanks
...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,...calling LabVIEW dll from C#
Could somebody post a fully working C# example of calling a function
from a LabVIEW generated dll with passing strings and integers in and
a couple of strings out?
What should be settings when creating the dll, of course (which
convention, how to pass)?
...Error Code "1097.....this might corrupted LABVIEW's memory.........." appears after exit the labview and re-start labview
I have a probelm when I use the "tool/import shared library(.dll)" wizard to generate the API from C.
The API works correctly when I complete the wizard, but after I exit labview and re-start labview to run the API again. The error 1097 code "......this might corrupted LABVIEW's memory.............."appears.
&nbs...labview 8.5 to labview 7.0
i am on my labview working with 8.5but at work, we only have labview 7.0.what would be my best way to get my vi to be 7.0?thank you so muchMessage Edited by krispiekream on 06-19-2008 03:59 PM
In order to go from LV 8.5 to LV 7, you will need to have LV 8.5 (save it back to 8.0), LV 8.0 (save it back to 7.1) and LV 7.1 (to save back to 7.0).
If it's only a few small VI's, you can post them on the forum and ask someone to do the saves for you. (Best if you do the save back to 8.0 and post that in order to eliminate 1 of the 3 steps for whoever will do the r...