pub unsafe extern "C" fn igBeginChildEx(
name: *const c_char,
id: ImGuiID,
size_arg: ImVec2_c,
child_flags: ImGuiChildFlags,
window_flags: ImGuiWindowFlags,
) -> boolpub unsafe extern "C" fn igBeginChildEx(
name: *const c_char,
id: ImGuiID,
size_arg: ImVec2_c,
child_flags: ImGuiChildFlags,
window_flags: ImGuiWindowFlags,
) -> bool