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

参数:

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

返回:

pointer to the created object

void lv_obj_class_init_obj(lv_obj_t *obj)

void _lv_obj_destruct(lv_obj_t *obj)

bool lv_obj_is_editable(lv_obj_t *obj)

bool lv_obj_is_group_def(lv_obj_t *obj)

struct _lv_obj_class_t

#include <lv_obj_class.h>

Describe the common methods of every object. Similar to a C++ class.

Public Members

const lv_obj_class_t *base_class

void (*constructor_cb)(const lv_obj_class_t *class_p, lv_obj_t *obj)

void (*destructor_cb)(const lv_obj_class_t *class_p, lv_obj_t *obj)

void (*event_cb)(const lv_obj_class_t *class_p, lv_event_t *e): Widget type specific event function

void *user_data

const char *name

int32_t width_def

int32_t height_def

uint32_t editable: Value from lv_obj_class_editable_t

uint32_t group_def: Value from lv_obj_class_group_def_t

uint32_t instance_size

uint32_t theme_inheritable: Value from lv_obj_class_theme_inheritable_t