/* Get the width of a glyph with kerning  */
uint16_t lv_font_get_glyph_width(const lv_font_t *font, uint32_t letter, uint32_t letter_next)
/* Get the width of a glyph with kerning  */
uint16_t lv_font_get_glyph_width(const lv_font_t *font, uint32_t letter, uint32_t letter_next)
{
    LV_ASSERT_NULL(font);
    lv_font_glyph_dsc_t g;
    bool ret;
    ret = lv_font_get_glyph_dsc(font, &g, letter, letter_next);
    if(ret) return g.adv_w;
    else return 0;
}