XSetWMClientMachine(), XGetWMClientMachine() - set or read a window's WM_CLIENT_MACHINE property
void XSetWMClientMachine (Display *display, Window w,
XTextProperty *text_prop)
Status XGetWMClientMachine (Display *display, Window w,
XTextProperty *text_prop_return)
The XSetWMClientMachine convenience function calls XSetTextProperty(3) to set the WM_CLIENT_MACHINE property.
The XGetWMClientMachine(3) convenience function performs an XGetTextProperty(3) on the WM_CLIENT_MACHINE property. It returns nonzero status on success; otherwise it returns a zero status.
Xlib