lv_subject_add_observer_obj() function

Add an observer to a subject for an object. When the object is deleted, it will be removed from the subject automatically.

Syntax

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Summary

Declaration

Definition

lv_observer_t * lv_subject_add_observer_obj(lv_subject_t * subject, lv_observer_cb_t observer_cb, lv_obj_t * obj, void * user_data);

Argument

Description

subject

pointer to the subject

observer_cb

callback to call

obj

pointer to an object

user_data

optional user data

pointer to the created observer

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