XSelectInput(3X11) XLIB FUNCTIONS XSelectInput(3X11)
XSelectInput - select input events
int XSelectInput(Display *display, Window w, long
event_mask);
display Specifies the connection to the X server.
event_mask
Specifies the event mask.
w Specifies the window whose events you are
interested in.
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)
BadWindow A value for a Window argument does not name a
defined Window.
Xlib - C Language X Interface
XFree86 Version 4.5.0 2
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