pub unsafe extern "C" fn igListBox_FnBoolPtr( label: *const c_char, current_item: *mut c_int, items_getter: Option<unsafe extern "C" fn(data: *mut c_void, idx: c_int, out_text: *mut *const c_char) -> bool>, data: *mut c_void, items_count: c_int, height_in_items: c_int) -> bool