Open the BIM Classification window

Oct 13, 2025 by wbrum.org 19 views

BIM Classification Window 'Cancel' Button Not Working: A Regression Issue in FreeCAD 1.1.0dev

FreeCAD, an open-source 3D computer-aided design (CAD) software, has been a popular choice among designers and engineers. However, with the latest version, 1.1.0dev, some users have reported a regression issue with the BIM Classification window. Specifically, the 'Cancel' button is not functioning as expected. In this article, we will delve into the details of this issue, explore possible causes, and provide a solution to resolve the problem.

The BIM Classification window is a crucial feature in FreeCAD, allowing users to classify and manage building information models (BIMs). However, when the 'Cancel' button is clicked, the window does not close, and the user is unable to exit the feature. This issue is not reproducible in FreeCAD 1.0, suggesting that it is a regression introduced in the latest version.

To reproduce the issue, follow these steps:

Open a new file: Create a new project in FreeCAD by clicking on "File" > "New" > "Project".
Open the BIM Classification window: Navigate to the "Workbench" menu and select "BIM" > "Classification".
Click the 'Cancel' button: Once the BIM Classification window is open, click on the "Cancel" button to exit the feature.
Observe the behavior: The window should close, but instead, it remains open, and the user is unable to exit the feature.

To provide a comprehensive understanding of the issue, we have included the full version information of the FreeCAD installation:

OS: Windows 10 build 19045
Architecture: x86_64
Version: 1.1.0dev.40504 (Git) Conda
Build type: Release
Branch: main
Hash: 855ad6c70904f911b2ce7114dd1a5bc24da98bd1
Python 3.11.11, Qt 5.15.15, Coin 4.0.3, Vtk 9.3.0, IfcOpenShell 0.0.0, OCC 7.8.1
Locale: English/United States (en_US)
Stylesheet/Theme/QtStyle: FreeCAD Light.qss/FreeCAD Light/Fusion
Logical/physical DPI: 96/92.6073

The BIM Classification window issue is specific to the BIM subproject in FreeCAD.

We agree to follow the project's Code of Conduct, which ensures a respectful and inclusive community.

Based on the provided information, the possible causes of the issue are:

Regression in the latest version: The issue may have been introduced in the latest version of FreeCAD, 1.1.0dev.
Incompatible dependencies: The dependencies used in the latest version may be incompatible with the BIM Classification window feature.
Bug in the Qt library: The Qt library, used in FreeCAD, may have a bug that is causing the issue.

To resolve the issue, we recommend the following steps:

Update to the latest version: Ensure that you are running the latest version of FreeCAD, 1.1.0dev.
Check for incompatible dependencies: Verify that the dependencies used in the latest version are compatible with the BIM Classification window feature.
Report the issue: If the issue persists, report it to the FreeCAD community, providing the necessary information to reproduce the issue.

The BIM Classification window 'Cancel' button not working is a regression issue in FreeCAD 1.1.0dev. By understanding the possible causes and following the recommended solution, users can resolve the issue and continue using the BIM Classification window feature without any problems.
BIM Classification Window 'Cancel' Button Not Working: Q&A

In our previous article, we discussed the issue of the BIM Classification window 'Cancel' button not working in FreeCAD 1.1.0dev. In this article, we will provide a Q&A section to address some of the frequently asked questions related to this issue.

A: The BIM Classification window is a feature in FreeCAD that allows users to classify and manage building information models (BIMs). It is a crucial tool for designers and engineers who work with BIMs.

A: The 'Cancel' button is used to exit the BIM Classification window and return to the main FreeCAD interface.

A: The 'Cancel' button is not working due to a regression issue in the latest version of FreeCAD, 1.1.0dev. This issue is not reproducible in FreeCAD 1.0.

A: To reproduce the issue, follow these steps:

Open a new file in FreeCAD.
Open the BIM Classification window.
Click the 'Cancel' button.
Observe the behavior: The window should close, but instead, it remains open.

A: The possible causes of the issue are:

Regression in the latest version of FreeCAD.
Incompatible dependencies used in the latest version.
Bug in the Qt library.

A: To resolve the issue, follow these steps:

Update to the latest version of FreeCAD.
Check for incompatible dependencies.
Report the issue to the FreeCAD community.

A: Yes, the issue is specific to the BIM subproject in FreeCAD.

A: Yes, you can report the issue to the FreeCAD community by providing the necessary information to reproduce the issue.

A: The Code of Conduct for reporting issues is to follow the project's Code of Conduct, which ensures a respectful and inclusive community.

The BIM Classification window 'Cancel' button not working is a regression issue in FreeCAD 1.1.0dev. By understanding the possible causes and following the recommended solution, users can resolve the issue and continue using the BIM Classification window feature without any problems. If you have any further questions or concerns, please feel free to ask.