lvgl/examples/widgets/canvas/lv_example_canvas_6.c

#include "../../lv_examples.h"
#if LV_USE_CANVAS && LV_BUILD_EXAMPLES

#define CANVAS_WIDTH  50
#define CANVAS_HEIGHT  50

/**
 * Draw an image to the canvas
 */
void lv_example_canvas_6(void)
{
    /*Create a buffer for the canvas*/
    static uint8_t cbuf[LV_CANVAS_BUF_SIZE_TRUE_COLOR(CANVAS_WIDTH, CANVAS_HEIGHT)];

    /*Create a canvas and initialize its palette*/
    lv_obj_t * canvas = lv_canvas_create(lv_scr_act());
    lv_canvas_set_buffer(canvas, cbuf, CANVAS_WIDTH, CANVAS_HEIGHT, LV_COLOR_FORMAT_NATIVE);
    lv_canvas_fill_bg(canvas, lv_color_hex3(0xccc), LV_OPA_COVER);
    lv_obj_center(canvas);

    lv_draw_img_dsc_t dsc;
    lv_draw_img_dsc_init(&dsc);

    LV_IMG_DECLARE(img_star);
    lv_canvas_draw_img(canvas, 5, 5, &img_star, &dsc);
}
#endif