Function TCOD_image_blit_rect 

pub unsafe extern "C" fn TCOD_image_blit_rect(
    image: TCOD_image_t,
    console: TCOD_console_t,
    x: c_int,
    y: c_int,
    w: c_int,
    h: c_int,
    bkgnd_flag: TCOD_bkgnd_flag_t,
)