Pieter Hijma 789f11f6ba Gui: Prevent unhandled exception adding properties
This commit prevents unhandled exceptions to be thrown in the Add
Property dialog.  When the user provides a valid name, for example 'Abc'
and then an invalid name, for example 'Abc^', an exception is thrown
that is caught by Qt's notify which may lead to a crash.  This is caused
by the fact that the editor is still bound to the old property that has
been removed.  The main idea was to preserve values that were provided
by the user as long as possible, also when a property name changes.
This design goal tried to preserve the user provided value even if the
property name is not valid.  Although the underlying property item is
explicitly unbound in that situation, the editor is not.

The solution is to also explicitly unbind the editor if there is an
editor that can have bindings.  Unbinding an editor does not
automatically hide the f(x) symbol in the editor (leading to errors on
unbound editors), so this commit also adds a bit of logic to hide
the f(x) symbol when an editor is unbound.

(cherry picked from commit a102c8a359)
2026-03-07 05:01:17 +00:00
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2025-11-24 21:32:52 +01:00
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2026-01-31 17:19:01 +08:00
2025-10-25 14:37:36 -05:00

Your own 3D Parametric Modeler

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Overview

  • Freedom to build what you want FreeCAD is an open-source parametric 3D modeler made primarily to design real-life objects of any size. Parametric modeling allows you to easily modify your design by going back into your model history to change its parameters.

  • Create 3D from 2D and back FreeCAD lets you sketch geometry-constrained 2D shapes and use them as a base to build other objects. It contains many components to adjust dimensions or extract design details from 3D models to create high quality production-ready drawings.

  • Designed for your needs FreeCAD is designed to fit a wide range of uses including product design, mechanical engineering and architecture, whether you are a hobbyist, programmer, experienced CAD user, student or teacher.

  • Cross platform FreeCAD runs on Windows, macOS and Linux operating systems.

  • Underlying technology

    • OpenCASCADE A powerful geometry kernel, the most important component of FreeCAD
    • Coin3D library Open Inventor-compliant 3D scene representation model
    • Python FreeCAD offers a broad Python API
    • Qt Graphical user interface built with Qt

Installing

Precompiled packages for stable releases are available for Windows, macOS and Linux on the latest releases page.

On most Linux distributions, FreeCAD is also directly installable from the software center application.

For weekly development releases visit the releases page.

Other options are described on the wiki Download page.

Compiling

FreeCAD requires several dependencies to correctly compile for development and production builds. The following pages contain updated build instructions for their respective platforms:

Reporting Issues

To report an issue please:

  • Consider posting to the Forum, Discord channel, or Reddit to verify the issue;
  • Search the existing issues for potential duplicates;
  • Use the most updated stable or development versions of FreeCAD;
  • Post version info from Help > About FreeCAD > Copy to clipboard;
  • Restart FreeCAD in safe mode Help > Restart in safe mode and try to reproduce the issue again. If the issue is resolved it can be fixed by deleting the FreeCAD config files.
  • Start recording a macro Macro > Macro recording... and repeat all steps. Stop recording after the issue occurs and upload the saved macro or copy the macro code in the issue;
  • Post a Step-By-Step explanation on how to recreate the issue;
  • Upload an example file (FCStd as ZIP file) to demonstrate the problem;

For more details see:

Note

The FPA offers developers the opportunity to apply for a grant to work on projects of their choosing. Check jobs and funding to know more.

Usage & Getting Help

The FreeCAD wiki contains documentation on general FreeCAD usage, Python scripting, and development. View these pages for more information:

The FreeCAD forum is a great place to find help and solve specific problems when learning to use FreeCAD.


This project receives generous infrastructure support from and KiCad Services Corp.

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Description
Official source code of FreeCAD, a free and opensource multiplatform 3D parametric modeler.
Readme LGPL-2.1 2.3 GiB
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