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Home Support Documentation Bugs

LabWindows/CVI 2020 Known Issues

Created Jun 20, 2023

Overview

This document contains the LabWindows/CVI known issues that were discovered before and since the release of LabWindows/CVI 2020. Known issues are performance issues or technical bugs that NI has acknowledged exist within this version of the product.

 

Not every issue known to NI appears on this list; it is intended to show the most severe and common issues that you may encounter and provide workarounds when possible. Other technical issues that you may encounter could occur through normal product use or system compatibility issues. You may find more information on these issues in NI’s Product Documentation, Knowledgebase, or Community.

Bug Number

Legacy ID

Description

Details
1225361

Ini_GetStringCopy Causes Fatal Run-Time Error in ANSI Encoded Application

CVI throws a General Protection Fault error when Ini_GetStringCopy is used to look for a key/tag under the following conditions:
  • The application is ANSI encoded.
  • The key/tag does not exist in the section specified.

Workaround:

Complete one of the following workarounds:
  1. Instead of Ini_GetStringCopy, use Ini_GetPointerToString in conjunction with StrDup to duplicate the string.
  2. Use the UTF-8 version of Ini_GetPointerToString and handle the conversions manually.

Reported Version:

LabWindows/CVI: 2020

Resolved Version:

LabWindows/CVI 2020 f1

Added:

May 5, 2021
1179817

Localization Utility Tool Crashes When Loading a Translated UI Panel

The LabWindows/CVI 2020 Localization Utility tool crashes when loading a translated UI panel that contains a TAB control.

Workaround:

There is currently no known workaround for this issue. Use LabWindows / CVI 2019 or earlier.

Reported Version:

LabWindows/CVI: 2020

Resolved Version:

LabWindows/CVI 2020 f1

Added:

May 5, 2021
1242461

Cannot Launch External Application That Requires Elevated Permission

A LabWindows/CVI 2020 application crashes or fails to launch an external application if the external application requires elevated permission.

Workaround:

There is currently no known workaround for this issue. Use LabWindows / CVI 2019 or earlier.

Reported Version:

LabWindows/CVI: 2020

Resolved Version:

LabWindows/CVI 2020 f1

Added:

May 5, 2021
1523486, 1618530

Cannot Send Commands from a CVI DDE Client to a Non-CVI DDE Server

A DDE client implemented in LabWindows/CVI 2020 cannot send commands to a DDE server implemented in some other development environment.

Workaround:

There is currently no known workaround for this issue.

Reported Version:

LabWindows/CVI: 2020

Resolved Version:

LabWindows/CVI 2020 f2

Added:

Jun 10, 2021
2227989

Printing debug messages is 5 times slower on Windows 10

Using DebugPrintf to print debug messages to LabWindows/CVI Debug Output Window is 5 times slower on Windows 10

Workaround:

There is currently no known workaround for this issue.

Reported Version:

LabWindows/CVI: 2019

Resolved Version:

LabWindows/CVI 2020 f3

Added:

N/A
2083403

Getting the text of a combobox inside a tree column returns a wrong text in a CVI 2020 ANSI application

Using ATTR_LABEL_TEXT attribute to get the text of  a combobox inside a tree column returns a wrong text in a CVI 2020 ANSI application.

Workaround:

There is currently no known workaround for this issue.

Reported Version:

LabWindows/CVI: 2020

Resolved Version:

LabWindows/CVI 2020 f3

Added:

N/A
2083361

InsertTreeItem always returns 0 in CVI 2020 ASCI applications.

Using InsertTreeItem in a CVI 2020 ANSI application always return 0 instead of returning the index of the inserted item.

Workaround:

There is currently no known workaround for this issue.

Reported Version:

LabWindows/CVI: 2020

Resolved Version:

LabWindows/CVI 2020 f3

Added:

N/A

Final Time Issue Listed

Issues found in this section will not be listed in future known issues documents for this product.

There are currently no issues to list.

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Glossary of Terms

 

  • Bug ID - When an issue is reported to NI, you may be given this ID or find it on ni.com.  You may also find IDs posted by NI on the discussion forums or in KnowledgeBase articles.
  • Legacy ID – An older issue ID that refers to the same issue.  You may instead find this issue ID in older known issues documents.
  • Description - A few sentences which describe the problem. The brief description given does not necessarily describe the problem in full detail.
  • Workaround - Possible ways to work around the problem.
  • Reported Version - The earliest version in which the issue was reported.
  • Resolved Version - Version in which the issue was resolved or was no longer applicable. "N/A" indicates that the issue has not been resolved.
  • Date Added - The date the issue was added to the document (not the reported date).