Function lvgl_sys::lv_font_get_glyph_dsc_fmt_txt

pub unsafe extern "C" fn lv_font_get_glyph_dsc_fmt_txt(
    font: *const lv_font_t, 
    dsc_out: *mut lv_font_glyph_dsc_t, 
    unicode_letter: u32, 
    unicode_letter_next: u32
) -> bool