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Channel: LabWindows/CVI topics

Ensuring the Continued Support and Stability of LabWindows/CVI

Hello LabWindows/CVI Community,We understand that many of you have questions about the future of LabWindows/CVI, and we want to reassure you of our commitment to the product. Therefore, we plan to...

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pin an app to the taskbar

Good Morning,In Labwindows CVI, I'm trying to configure the installer to pin an app to the taskbar.Unfortunately, it's not working. Can anyone help?Thanks,Edy

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How to determine what threads are left running at the end of execution in...

I have a program that waits until it receives a message from the host before loading a configuration.  This configuration has many threads and allocates hardware resources.  If I send a command to...

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Update to Windows 11 causes inconsistencies on Timer () value

Hello all, I have an application that has been running from several years now without major issues. Now the customer has updated one of his systems from Win10 to Windows 11 (version 24H2, build...

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INI (inifile) using utf-8 and chinese font, inside the ini file = ???

I'm using CVI 2020 on Win11. Now I want to save chinese strings into my ini file with Ini_PutString(). Inside the running program, the chinese font is showing fine, but after calling the function...

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Is it possible to program a cRIO-9081 RT using LabWindows/CVI Real Time?

I need to offload some of my PXI DAQ to a remote device.  Currently I am using a PXI and two cDAQ chassis.  One cDAQ chassis is 10m away.  I want to replace it with something else to get away from USB...

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DeclareThreadSafeVar() and what it does if it fails (documentation request)

The LabWindows/CVI 2017 code I maintain uses thread safe variables, defined like this:// Thread safe variables. DeclareThreadSafeVar (TCP_MESSAGE_DATA, LabViewTCP_MessageData);This then uses the...

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Table text font size changes in fullscreen (extremly small)

I have a table with fixed font size of 11 and font Microsoft YaHei UI. If the panel is not maximized the font looks good. If I maximize the panel, all controls incl. the table are scaled to the new...

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API function reference

I'm a seasoned developer and I'm trying to find the reference for the API functions in the Program Files x86\...\API\CVI library Specifically what the function does and description of the parameters....

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LabWindows/CVI and NI-VISA

Bonjour,J’utilise un code en C qui scanne les ressources VISA de type "ASRL[0-9]*::?*INSTR". Ce code fonctionne correctement sur plusieurs ordinateurs, mais sur certains, une erreur survient :Erreur...

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Interactive execution - Function Panels in CVI

Having some problems with using function panels in CVI, latest version, perpetual license, in Windows 11.  When trying to execute a function panel in debug mode, the program hangs for 4-5 seconds on...

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CmtGetTSVPtr() error not used in DeclareThreadSafeXXX() macros.

I have been dealing with an issue where calls to our threadsafe variables fail and we get a Non Fatal Runtime Exception. When these happen, the line number is the macro: DefineThreadSafeScalarVar...

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CmtGetLock() - does it lock from same thread?

Our LabWindows/CVI 2017 app has UI buttons that run functions that send a bunch of messages to various devices. The message code is in a DLL. I used CmtGetLock() in that DLL so the background thread...

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LabWindws/CVI v6.0

Bonjour, J'ai un de mes prédécesseurs qui avait développé une interface sous LabWindows/CVI v6.0 sous OS Windows 98. Le PC étant hors service, je souhaiterais recompiler code développé avec LabWindows...

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Identify time process in debug mode

Hello, I need help finding the necessary tools to analyze/determine our processing times. We've been developing our software for several years now, so it has a few lines of code and features. In...

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ADODB read number from database

I am adding a feature to some very old CVI code. It uses ADODB to read strings from a database, I now need to read an additional  number from the same database row. Code snippet: status +=...

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Install of CVI 2020 on new W11 PC fails

Hi, I get the following error when I try to install CVI 2020 on my new PC.What can I do?

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Radio buttons but using command buttons (with example source)

The LabWindows/CVI 2017 application I maintain uses Command Buttons as radio button style controls (only one can be clicked at a time). This is all being done manually with a bunch of code, so today I...

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P2P Streaming using FPGA Interface C API

I’ve generated the bitfiles for my peer‑to‑peer (P2P) reader and writer on R Series FPGA targets(7820R and 7868R), and I used the FPGA Interface C API Generator to produce the corresponding C and...

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Installation of the CVI RTE 2019 and 2020 is blocked by Windows

I tried to install CVI run-time Engine but it is blocked by Windows  because the Smart App Checker claims the producer is unknown 😲 and the app have no reputation 🙄This happens on Win11 PRO with the...

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