Function ncursesw::shims::bindings::set_fieldtype_arg

pub unsafe extern "C" fn set_fieldtype_arg(
    arg1: *mut FIELDTYPE, 
    make_arg: Option<unsafe extern "C" fn(arg1: *mut va_list) -> *mut c_void>, 
    copy_arg: Option<unsafe extern "C" fn(arg1: *const c_void) -> *mut c_void>, 
    free_arg: Option<unsafe extern "C" fn(arg1: *mut c_void)>
) -> c_int