XmVaCreateManagedSpinBox(3) on Linux
The text add319273e2b, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
A SpinBox widget convenience creation functions. "XmVaCreateToggleSpinBox" "XmVaCreateManagedSpinBox" "creation functions" "XmVaCreateSpinBox"