pub unsafe extern "C" fn igTypingSelectFindNextSingleCharMatch(
req: *mut ImGuiTypingSelectRequest,
items_count: c_int,
get_item_name_func: Option<unsafe extern "C" fn(arg1: *mut c_void, arg2: c_int) -> *const c_char>,
user_data: *mut c_void,
nav_item_idx: c_int,
) -> c_int