Function titanium::desktop::gui::libdruid::piet::cairo::ffi::cairo_device_observer_print

pub unsafe extern "C" fn cairo_device_observer_print(
    device: *mut cairo_device_t,
    write_func: Option<unsafe extern "C" fn(_: *mut c_void, _: *mut u8, _: u32) -> i32>,
    closure: *mut c_void
) -> i32