Lines Matching refs:be
17 - **observers**: attached to subjects to be notified on value change
47 //Will be called when the related subject's value changes
81 Subjects have to be static or global :cpp:type:`lv_subject_t` type variables.
96 The following functions can be used to set a subject's value:
106 The following functions can be used to get a subject's value:
118 The following functions can be used to get a subject's previous value:
134 To subscribe to a subject the following function can be used:
154 In the observer callback :cpp:expr:`lv_observer_get_target(observer)` can be used to get the saved …
161 In more generic case any pointer can be saved a target:
181 lv_obj_remove_from_subject(widget, subject); /* `subject` can be NULL to unsubscribe from all */
196 When any of these 3 parameters changes the label needs to be updated,
208 The trick is that when any element of the group is notified the subject group will be notified as w…
219 lv_subject_t subject_all; //It will be the subject group
288 An optional format string can be added with 1 format specifier (e.g. ``"%d °C"``)
289 …ormat string is ``NULL`` the value will be used directly. In this case on string and pointer type …