pub unsafe extern "C" fn igImFontCalcTextSizeEx(
font: *mut ImFont,
size: f32,
max_width: f32,
wrap_width: f32,
text_begin: *const c_char,
text_end_display: *const c_char,
text_end: *const c_char,
out_remaining: *mut *const c_char,
out_offset: *mut ImVec2_c,
flags: ImDrawTextFlags,
) -> ImVec2_c