Report to DENY using LV 2011 built dll crash

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• Create dllmain for labview built dll

  I have a lot of labview code I want to turn it into a DLL. The dll will require some global state initialization after cleaning on process_attach and process_detach. If I was building the C code DLL, that I would create a DLLMain function to take care of this, however when I look in the properties of specifications of generation of a DLL in the LabVIEW Project Explorer, I can't find an option to set my initialsation code and stop. Note that I use LabVIEW 8.6.

  On another note, in looking at the docs for the Call library function node we're talking reminders for the reserve, cancel and abort. What does mean to 'reserve' and 'Cancel '? The description suggests that these reminders can be used for initialization and cleanup but I see not how make use of this in a context where my labview built DLL could be described as some other environment (e.g. an exe written in C).

  I'm still fairly new to LabVIEW so I apologize if I missed something obvious.

  DLLMain is VERY limited in what it can do without causing a charger global potentional lock in Windows System. The execution of LabVIEW VIs is something requiring an infrastructure that is not safe for DLLMain initialization already almost 100%. So there is no way that I can see, LabVIEW could allow you to run a specific VI at load time. And change DLLMain yourself isn't an option either, given that LabVIEW that creates on the fly for each DLL and the code is quite tricky.

  What is the problem about the design of your DLL in such a way that the user must call an initialization function explicitly before using other features in it? After all there is no global state in a LabVIEW DLL, except by functions that are loaded into memory and remain in memory for as long as you want to maintain global state. Once function initialized global X() a memory of leaves before the Y() function that references global was loaded into memory, the enitre a global state is lost and reset to the default state when loading function Y().

• Satellite P100-160: Mono sound when you use MciSendString() calling Winmm.dll

  I have a Satellite P100-160.
  The sound works well for some programs, Windows Media Player, etc. Audigy.

  However when I call for its program using MciSendString() calling Winmm.dll I get only mono sound channel, good times left channel is almost silent. SetAudio volume has no effect.
  I've updated the BIOS and the audio driver for the latest versions available on this site.

  Does anyone have a solution or pointer to a solution.

  Is it really a laptop problem?
  Maybe the multimedia function MciSendString() provides only the mono or your have done something wrong?  :|

  See Microsoft Developer Network:
  http://msdn2.Microsoft.com/en-us/library/ms709492 (vs.85) .aspx

  I don't know what you want to do and why you use the MciSendString() to call Winmm.dll, but if the sound display correctly using current players like Windows Media Player, for example, I really put t see any hardware problem m

  Note it is a Toshiba user forum and here you will encounter common users who share knowledge and solve common issues of interest.
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• Deal with failure when using LabVIEW 2011 and DSC MODBUS communication

  I'm currently reading from operating records a PLC with MODBUS/TCP. I confirmed that the PLC will update the values and in response to a MODBUS communication correctly by using a third-party program called Modbus Poll. However, when I try to query the PLC using the LabVIEW shared variable engine, I am unable to read the values of the same addresses that I consult with Modbus Poll.

  My installation is simply to a PC directly connected to the controller via Ethernet without a router between the two. I'm using LabVIEW 2011 SP1 with the DSC module.

  I opened the Manager of distributed systems OR to display the State of all variables in the Modbus Library that I created, and I noticed that the ILO CommFail permanently the value 'true '. All other variables with a 'read' access mode signal "failure of process". I tried to restart the process and stop and start the local variable engine without success. I also restarted my computer several times to see if any services did not exist, but this does not appear to have solved the problem.

  Finally, I resorted to listening to communications on the network card I have the PLC connected via Ethernet using Wireshark and found that while Modbus Poll communicates with PLC, number of MODBUS and TCP packet is sent and received. However, when using only LabVIEW or the DSM OR communicate with the controller, there don't seem to be any communication on the network card.

  Something that may be interesting to note is that I could communicate with the PLC and to read values with the DSM just once, when I understood everything first what address I should be reading of. All of this has stopped working shortly after. Prior to this, 'CommFail' was not generally set to 'true' with my current setup. Thinking it was my firewall, I have since disabled my firewall, but this seems to have had no effect on the problem either.

  Any help on this would be appreciated.

  So, I thought about it. It turns out that the IP address of the server i/o MODBUS must be set to the address of the MODBUS slave, not the local computer. The address of the i/o MODBUS server is defined by the navigation in the Explorer window projects, expanding the variable engine shared library for MODBUS and right click on the server MODBUS (for example Modbus1) item and select Properties.

  In addition, the addresses seem to be shifted by + 1.

  Thanks for the tip so.

• Control CMD (command line interface) using Labview 2011.

  Hello

  I'm trying to control software that has an interface to command line using LabView 2011 but I have problems when reading the information.

  Is attached the VI I created so far, but it is not working properly.

  Problems so far:

  1 - if I use ReadLine(), it blocks showing no error and nothing else.

  2 - ReadToEnd () same problem as the previous line, the software hangs just at this stage.

  3 - if I compare the response of the "peek" in waiting for the - 1 indicating there is not more character, the hook of software as the previous steps.

  You have some clues as to what might be wrong or another way to 'control' the CMD to send messages, read and send messages, etc...

  Thank you very much for your help.

  I've done it before - I posted about this on the forum here: https://forums.ni.com/t5/LabVIEW/How-to-open-close-and-monitor-a-application-xyz-exe-using/m-p/32511...

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  Buy Visual Studio 2008

  I need a copy of Visual Studio 2008 while I have the same version of Crystal Reports that are used by one of my clients.

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  Welcome to Microsoft Windows 7 answers Forum!

  Thank you for visiting the Microsoft answers Forum.

  The question you posted would be better suited in the MSDN Forums. I would recommend posting your query in the MSDN Forums

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  Is this always the case?

  I just had my father buy a new Dell laptop, on the assumption that he would be able to connect to its network and to back up the server in the same way that his laptop Win7 had been save.

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  Your request would be better suited in the TechNet forum. Please post your query by clicking on the link.

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• Built app crashes instantly

  I am building an application in Labview 2010 Professional (upgrade to the latest patch, f4)

  The application is built successfully, but when I run my application built, it crashes instantly (on the same computer, I built it on) declaration of an accident in lvrt.dll

  I tried leaving the parts of the code that accesses the dll files, but that did not help. I'm not able to use remote debugging, because it crashes instantly.

  First of all, I was able to build and run the application on my development machine, but not run it on the deployment computer. Later, I wasn't able to run on the development computer, either, I haven't had huge changes in the code so I don't know what the difference is.

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  How can I continue my troubleshooting, anoyone has suggestions?

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• DLL crashes LabView 2013 Pro, but good to EXE

  Hello

  I started having a problem older "degenerate." I had a previous post about a dll which plays a role of interface between a program running under Windows and LabView. The details are here:

  http://forums.NI.com/T5/LabVIEW/installed-program-no-Comm-with-driver/m-p/2659765/highlight/true#M79...

  Note that this isn't a double post, I just mentioned my recent problem there, when he was not that common.

  (http://forums.ni.com/t5/LabVIEW/installed-program-no-comm-with-driver/m-p/2662503/highlight/true#M79...

  Today - unknown reason - after a win system restart I can not run my development environment LabView code. When I run the main VI, it blocks all of the LabView environment during the first call of dll. This problem we had before also, but the 2nd of the 3rd test he ran OK. Today, I tried like 30 times, too many system restart. The native software spectroscope works very well too.

  Strange, if I run the exe to build, everything works fine. The problem appears only when I run LabVIEW. There is no error code, only a window appeared the first time, as I can send the error report to NOR. I can dig into some logs tomorrow at the lab, I just need to know where I can get.

  It seems that someone has also experienced similar behavior with external dll call:

  http://forums.NI.com/T5/LabVIEW/problem-DLL-crashes-LabVIEW/m-p/2562667/highlight/true#M773565

  "In the application resulting (Exe), it seems to work very well."

  What is the difference between when the dll is built in the exe file, and when it is executed from the LabView dev environment?

  Thanks for any idea and help!

  (if nothing helps, I just re - build the exe after changes to the program, but it slows down some coding)

  The last time, we have no comments from the company that created this dll, I'll try to contact again...)

  Hello

  you said that you have read the discussion in the following link:

  http://forums.NI.com/T5/LabVIEW/problem-DLL-crashes-LabVIEW/m-p/2562667/highlight/true#M773565

  Are you facing exactly the same problem?

  If Yes, then there is not much we can do. LV is an access contradication with your included DLL unless you have access to its source. You do not experience these problems with the exe since that only works on the run-time engine while the LV environment executes the code in a different way (why LV reserve this special memory on which your DLL is also trying to access.

• DirectX SDK - CreateEffect E_NOTIMPL - Windows-Shell-DLL crash

  Hello

  I win 10 x 64 and I have installed the DirectX SDK.

  I need to run the example FF Const, to test the Force Feedback on my wheel.

  The following function returns "E_NOTIMPL".

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  Shell-Windows-DLL crashes, if I want to read a ffb effects on control of drive of the navigation panel.

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  Can someone help me?

  Friendly reg.

  Spy-Shifty

  This issue is beyond the scope of this site (for consumers) and to be sure, you get the best (and fastest) reply, we have to ask either on Technet (for IT Pro) or MSDN (for developers)
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