lv_obj_class.h¶

Typedefs

typedef void (*lv_obj_class_event_cb_t)(lv_obj_class_t *class_p, lv_event_t *e)¶

Enums

enum lv_obj_class_editable_t¶

Values:

enumerator LV_OBJ_CLASS_EDITABLE_INHERIT¶: Check the base class. Must have 0 value to let zero initialized class inherit

enumerator LV_OBJ_CLASS_EDITABLE_TRUE¶

enumerator LV_OBJ_CLASS_EDITABLE_FALSE¶

enum lv_obj_class_group_def_t¶

Values:

enumerator LV_OBJ_CLASS_GROUP_DEF_INHERIT¶: Check the base class. Must have 0 value to let zero initialized class inherit

enumerator LV_OBJ_CLASS_GROUP_DEF_TRUE¶

enumerator LV_OBJ_CLASS_GROUP_DEF_FALSE¶

enum lv_obj_class_theme_inheritable_t¶

Values:

enumerator LV_OBJ_CLASS_THEME_INHERITABLE_FALSE¶: Do not inherit theme from base class.

enumerator LV_OBJ_CLASS_THEME_INHERITABLE_TRUE¶

Functions

lv_obj_t *lv_obj_class_create_obj(const lv_obj_class_t *class_p, lv_obj_t *parent)¶

Create an object form a class descriptor

Parameters:

class_p – pointer to a class
parent – pointer to an object where the new object should be created

Returns:

pointer to the created object

void lv_obj_class_init_obj(lv_obj_t *obj)¶

bool lv_obj_is_editable(lv_obj_t *obj)¶

bool lv_obj_is_group_def(lv_obj_t *obj)¶

void lv_obj_set_external_data(lv_obj_t *obj, void *data, void (*free_cb)(void *data))¶

Associates an array of external data pointers with an LVGL object.

Associates custom user data with an LVGL object and specifies a destructor function that will be automatically invoked when the object is deleted to properly clean up the associated resources.

Parameters:

obj – Target LVGL object
data – User-defined data pointer to associate with a object
free_cb – Cleanup function called for each non-NULL data pointer during object deletion. Receives single data pointer as parameter. NULL means no automatic cleanup.