7.8. Deleting Items
You can use the delete method to delete items from the listbox:
$lb->delete(firstindex [, lastindex ]);
The first argument is the index from which to start deleting. To delete more than just that one item, you can add a second index. The firstindex must be less than or equal to the lastindex specified. To delete all the elements in the listbox:
$lb->delete(0, 'end');
To delete the last item in the listbox:
$lb->delete('end');
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