The Weird and The Wonderful

evoid lcd_flush_display( lv_display_t *disp, const lv_area_t *area, uint8_t * px_map) {
    size_t count = (area->x2-area->x1+1)*(area->y2-area->y1+1);
    for(int i = 0;i<count;++i) {
        uint16_t* p = &((uint16_t*)px_map)[i];
        *p = ((*p<<8)&0xFF00)|((*p>>8)&0xFF);
    }
    esp_lcd_panel_draw_bitmap(lcd_handle,area->x1,area->y1,area->x2+1,area->y2+1,px_map);
    LV_UNUSED(disp);
}

public interface IStorage{
    int Save();
}

public interface IPersist{
    int Save();
}

public class SaveImplementor : IStorage, IPersist{
    public int Save(){
        return 1;
    }
}

public class SaveImplementor : IStorage, IPersist{

    int IStorage.Save(){
        return 1;
    }

    int IPersist.Save(){
        return 2;
    }
}

#ifdef __cplusplus
#  define this not_the_cpp_this
#  define new not_the_cpp_new

#else /* write or low level APIs not supported */
int main(void)
{
   fprintf(stderr,
      "pngvalid: no low level write support in libpng, all tests skipped\n");
   /* So the test is skipped: */
   return SKIP;
}
#endif

Quote:

At present, there are eight branches:

master (actively developed)
libpng16 (equivalent to master)
libpng17 (frozen, last updated on 2017-Sep-03)
libpng15 (frozen, last updated on 2017-Sep-28)
libpng14 (frozen, last updated on 2017-Sep-28)
libpng12 (frozen, last updated on 2017-Sep-28)
libpng10 (frozen, last updated on 2017-Aug-24)
libpng00 (frozen, last updated on 1998-Mar-08)

#if PNG_LIBPNG_VER >= 10700
        if (!for_background && image->bit_depth < 8)
          image->bit_depth = image->sample_depth = 8;
#endif