MirOS Manual: XSelectInput(3)


XSelectInput(3X11)       XLIB FUNCTIONS        XSelectInput(3X11)

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. Ini-
     tially, 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
     ancestor 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 following 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 asso-
          ciated with the event mask SubstructureRedirectMask.

     +    Only one client at a time can select a ResizeRequest
          event, which is associated with the event mask Resiz-
          eRedirectMask.

     +    Only one client at a time can select a ButtonPress
          event, which is associated with the event mask But-
          tonPressMask.

     The server reports the event to all interested clients.

     XSelectInput can generate a BadWindow error.

XFree86                   Version 4.5.0                         1

XSelectInput(3X11)       XLIB FUNCTIONS        XSelectInput(3X11)

DIAGNOSTICS

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

SEE ALSO

     Xlib - C Language X Interface

XFree86                   Version 4.5.0                         2

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