How to change the height of the item of roller?

How-to
1

Hi,
I find the height of item of roller is not changed,How can i change it?

2

Do you mean the height of the roller itself or the selected item?
For the roller itself use: lv_roller_set_visible_row_count
For the height of the selected element set the font.line_space in LV_ROLLER_STYLE_BG

3

@kisvegabor
Thank you，I will try it.

4

I love you very much,would you like to solve my topic?