How to change group focus style?

How-to
1

Description

In previous versions, it was possible to control the style of a focused object within a group.
This was done with a callback of type lv_group_style_mod_cb_t.
This callback type is still present in lv_group.h but there is no longer a way to set the group focus style modification callback.

What MCU/Processor/Board and compiler are you using?

Any

What do you want to achieve?

I want to customize the look of the focused object in a group.

What have you tried so far?

I don’t see how to do it in the code or docs, so I don’t know what to try.

Code to reproduce

N/A

Screenshot and/or video

N/A

2

In v7 you can use FOCUSED and EDITED states:
https://docs.lvgl.io/latest/en/html/overview/style.html#states

3

Ah, OK. That explains it. Very different than before so I was looking in the wrong places.
I think then, the built-in mono theme needs some work with regards to the group focus style.

4

I’ve improved the mono theme to handle focus/edit states.