XmTransferDone(3) on Linux
The text 428791ae6530, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
A toolkit function that completes a data transfer "XmTransferDone" "toolkit functions" "XmTransferDone"