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Dropdown List~

obj:dropdown

lv_dropdown

Property Value Default Description
options string "" List of items separated by \n
val int16 0 The number of the selected item
text string "" Read-only The text of the selected item
direction byte 0 Direction where the dropdown expands:
0 = down, 1 = up, 2 = left, 3 = right
Note: up and down are superseeded by the screen size.
show_selected bool true Show the selected option or a static text
max_height int16 3/4 of screen height The maximum height of the open drop-down list
Method Parameters Description
open To manually open the drop-down list
close To manually close the drop-down list

To change the currently selected item, use the val attribute.
To change the items in the list, use the options attribute.

Example jsonl
1
{"page":1,"id":10,"obj":"dropdown","x":10,"y":205,"w":105,"h":30,"options":"Apple\nBanana\nOrange\nMelon"}

When the item is changed both val and text of the newly selected item are send out accompanied by the change event.


Last update: 2024-03-27