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);
  - display
- Specifies the connection to the X server.
- text_prop
- Specifies the XTextProperty structure to be used.
- text_prop_return
- Returns the XTextProperty structure.
- w
- Specifies the window.
The XSetWMClientMachine convenience function calls
  XSetTextProperty to set the WM_CLIENT_MACHINE property.The XGetWMClientMachine convenience function performs an
    XGetTextProperty on the WM_CLIENT_MACHINE property. It returns a
    nonzero status on success; otherwise, it returns a zero status.
  - WM_CLIENT_MACHINE
- The string name of the machine on which the client application is
    running.
XAllocClassHint(3), XAllocIconSize(3), XAllocSizeHints(3), XAllocWMHints(3),
  XSetCommand(3), XSetTransientForHint(3), XSetTextProperty(3),
  XSetWMColormapWindows(3), XSetWMIconName(3), XSetWMName(3),
  XSetWMProperties(3), XSetWMProtocols(3), XStringListToTextProperty(3)
Xlib - C Language X Interface