How can I use a roller to achieve this effect? Regardless of the shadow effect, I use lvgl 8.3.4

How-to
1

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How can I use a roller to achieve this effect? Regardless of the shadow effect, I use lvgl 8.3.4

2

Sorry, I do not understand.
What does it mean “this effect”?

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the shadow

4

this link maybe usefull.( 滚筒 （lv_roller） — LVGL 文档)

5

thank you