Opened against beta since:

• 2026.1 beta cycle is the most privileged time for add-on authors to have a look at deprecation messages.
• This PR is low risk: only log message string and docstrings are modified.

Link to issue number:

None

Summary of the issue:

A deprecation message recommended to use gui.messageDialog.MessageDialog but the gui.message module does not exist.

Description of user facing changes:

The deprecation message will now mention gui.message.MessageDialog.

Description of developer facing changes:

Fixed both the deprecation message and docstrings mentioning the non-existing gui.messageDialog module.

Description of development approach:

String replacement. See diff

Testing strategy:

Manual test of the deprecation message.

Known issues with pull request:

None

Code Review Checklist:

• Documentation:
  • Change log entry
  • User Documentation
  • Developer / Technical Documentation
  • Context sensitive help for GUI changes
• Testing:
  • Unit tests
  • System (end to end) tests
  • Manual testing
• UX of all users considered:
  • Speech
  • Braille
  • Low Vision
  • Different web browsers
  • Localization in other languages / culture than English
• API is compatible with existing add-ons.
• Security precautions taken.