lv_canvas_set_buffer() function

Set a buffer for the canvas.

Syntax

Show:

Summary

Declaration

Definition

from lv_canvas.h:66

void lv_canvas_set_buffer(lv_obj_t * canvas, void * buf, lv_coord_t w, lv_coord_t h, lv_img_cf_t cf);

Implemented in lv_canvas.c:66

Arguments

Argument

Description

canvas

pointer to a canvas object

buf

a buffer where the content of the canvas will be. The required size is (lv_img_color_format_get_px_size(cf) * w) / 8 * h) It can be allocated with `lv_mem_alloc()` or it can be statically allocated array (e.g. static lv_color_t buf[100*50]) or it can be an address in RAM or external SRAM

width of the canvas

height of the canvas

color format. `LV_IMG_CF_...`

Examples

References

from examples

lv_canvas_set_buffer() function

Syntax

Arguments

Examples

References

Call Tree

Data Use

Class Tree

Override Tree

Implementations

Instances

Lifecycle