Symbols

Files

loading (1/4)...

Summary Syntax Arguments References Call Tree Data Use

SourceVuESP-IDF Framework and Examplesi80_controller samplelv_subject_init_string()

lv_subject_init_string() function

Initialize a string type subject

Syntax

Show:

Summary

Declaration

Definition

from lv_observer.h:111

void lv_subject_init_string(lv_subject_t * subject, char * buf, char * prev_buf, size_t size, const char * value);

Implemented in lv_observer.c:118

Arguments

Argument

Description

subject

pointer to the subject

buf

pointer to a buffer to store the string

prev_buf

pointer to a buffer to store the previous string, can be NULL if not used

size

size of the buffer

value

initial value as a string, e.g. "hello"

Notes

the string subject stores the whole string, not only a pointer

References

Code

Location

void lv_subject_init_string(lv_subject_t * subject, char * buf, char * prev_buf, size_t size, const char * value)

lv_observer.c:118

void lv_subject_init_string(lv_subject_t * subject, char * buf, char * prev_buf, size_t size, const char * value);

lv_observer.h:111

Call Tree

lv_subject_init_string() calls 3 functions:

lv_subject_init_string()

lv_memzero()

lv_strlcpy()

lv_ll_init()

Data Use

lv_subject_init_string() reads 4 variables and writes 3 variables:

lv_subject_type_t::LV_SUBJECT_TYPE_STRING

lv_subject_t::subs_ll

lv_subject_t::value

lv_subject_t::prev_value

lv_subject_init_string()

lv_subject_value_t::pointer

lv_subject_t::type

lv_subject_t::size

Class Tree

All items filtered out

Override Tree

All items filtered out

Implementations

All items filtered out

Instances

Lifecycle

All items filtered out