When attempting to close a modified document, a dialog box appears with the text
The user cannot select any of the options offered using only the Tab key and keyboard arrows (generally accepted and expected UX method).The document (…) has been changed. Do you want to save changes before the document is closed?
Problem / Use Case
Some musculoskeletal disorders make it difficult to use a mouse, and if we want to help such people, we must at least duplicate basic operations with keyboard controls using shortcuts or sequential switching of active areas. Selecting a button in a dialogue box when closing a document seems to me to be a sufficiently basic operation to extend the requirement for cursor-free use to it. I don't think it would be very difficult to implement this.
Steps to Reproduce
1. Create a new document.
2. Press Ctrl + W (Close command)
3. Press Tab
Expected Behavior
The buttons are highlighted sequentially, indicating the current button (the button in focus, the active button).
Actual Behavior
Nothing.
Current Workaround The dialog does not respond to Tab or arrow keys after it appears.
Proposed Solution Focus on Yes. Focus can be moved using the Tab key or the arrow keys.
Workarounds
Press Alt and press the letter key of the desired button.
Environment
PDF-XChange Editor 10.7.6, build 404 (Enhanced OCR) (Nov 20 2025; 21:35)
Microsoft Windows 10.0.26200.7462
