Drag and Drop shows 'not allowed' cursor / missing UI bindings

[metergames]

When attempting to drag and drop a Markdown (.md) or HTML file into the application window, the operating system displays a "not allowed" cursor, and the file cannot be dropped.

The UI window does not seem to be registered as a drop target.

The cursor should indicate that a drop is allowed, and releasing the mouse should trigger the app to open the dropped file in a new tab. However, the cursor changes to a "not allowed" symbol, and dropping the file does nothing.

OS: Windows 11
Python Version: 3.13

[metergames]

I can work on this.

[petertzy]

That’s because the plugin we previously used, tkinterdnd2, no longer supports drag-and-drop starting from Python version 3.10. Since we are using the Docling plugin, which requires Python 3.10 or higher, the current solution is a compromise.
You could try other branches of tkinterdnd2 or explore alternative approaches to resolve this issue. Thanks.

[petertzy]

We actually already implemented this PR earlier. However, there is still an unresolved issue.

When users are on Apple Silicon (M-series), they may encounter an architecture mismatch:

• Python is running as arm64
• tkdnd is compiled as x86_64

This leads to runtime errors due to incompatible binaries.

It might work fine in your specific environment, but since users can have different systems and hardware configurations, a proper solution should cover these common scenarios.

From my research, there is currently no reliable and universal fix for this mismatch in setups like mine. Therefore, I would prefer to wait until the official library/plugin provides proper support before introducing this feature.

In the meantime, feel free to continue investigating possible solutions for the architecture compatibility issue. You can either keep improving the implementation or wait for an official update that resolves it. Thanks.