1def slider_event_cb(evt):
2    slider = evt.get_target()
3
4    # Refresh the text
5    label.set_text(str(slider.get_value()))
6
7#
8# Create a slider and write its value on a label.
9#
10
11# Create a slider in the center of the display
12slider = lv.slider(lv.scr_act())
13slider.set_width(200)                                              # Set the width
14slider.center()                                                    # Align to the center of the parent (screen)
15slider.add_event_cb(slider_event_cb, lv.EVENT.VALUE_CHANGED, None) # Assign an event function
16
17# Create a label above the slider
18label = lv.label(lv.scr_act())
19label.set_text("0")
20label.align_to(slider, lv.ALIGN.OUT_TOP_MID, 0, -15)               # Align below the slider
21
22
23