XmTextFieldGetSelectionWcs(3) on Linux
The text 10b34c14c674, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
A TextField function that retrieves the value of a wide character encoded primary selection "XmTextFieldGetSelection\%Wcs" "TextField functions" "XmTextFieldGetSelection\%Wcs"