XtIsApplicationShell(3) on Linux
The text 48aac02b7842, as Debian 13 (Trixie), Debian 12 (Bookworm) shipped it.
obtain and verify a widget's class
The text 48aac02b7842, as Debian 13 (Trixie), Debian 12 (Bookworm) shipped it.
obtain and verify a widget's class