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XSelectInput(3)                                XLIB FUNCTIONS                                XSelectInput(3)



NAME
       XSelectInput - select input events

SYNTAX
       int XSelectInput(Display *display, Window w, long event_mask);

ARGUMENTS
       display   Specifies the connection to the X server.

       event_mask
                 Specifies the event mask.

       w         Specifies the window whose events you are interested in.

DESCRIPTION
       The XSelectInput function requests that the X server report the events associated with the specified
       event mask.  Initially, X will not report any of these events.  Events are reported relative to a
       window.  If a window is not interested in a device event, it usually propagates to the closest ances-tor ancestor
       tor that is interested, unless the do_not_propagate mask prohibits it.

       Setting the event-mask attribute of a window overrides any previous call for the same window but not
       for other clients.  Multiple clients can select for the same events on the same window with the fol-lowing following
       lowing restrictions:

       •    Multiple clients can select events on the same window because their event masks are disjoint.
            When the X server generates an event, it reports it to all interested clients.

       •    Only one client at a time can select CirculateRequest, ConfigureRequest, or MapRequest events,
            which are associated with the event mask SubstructureRedirectMask.

       •    Only one client at a time can select a ResizeRequest event, which is associated with the event
            mask ResizeRedirectMask.

       •    Only one client at a time can select a ButtonPress event, which is associated with the event
            mask ButtonPressMask.

       The server reports the event to all interested clients.

       XSelectInput can generate a BadWindow error.

DIAGNOSTICS
       BadWindow A value for a Window argument does not name a defined Window.

SEE ALSO
       Xlib - C Language X Interface



X Version 11                                    libX11 1.2.1                                 XSelectInput(3)