Man pages matching name xmvacreatemanagedtogglebutton in section 3:

XmVaCreateManagedToggleButton.3.en	debian 10 / libmotif-dev
XmVaCreateManagedToggleButton.3.en	debian 11 / libmotif-dev
XmVaCreateManagedToggleButton.3.en	debian 12 / libmotif-dev