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 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:
+o 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.
+o Only one client at a time can select
CirculateRequest,
ConfigureRequest, or
MapRequest events, which are associated
with the event mask
SubstructureRedirectMask.
+o Only one client at a time can select a
ResizeRequest event,
which is associated with the event mask
ResizeRedirectMask.
+o 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 InterfaceX Version 11 libX11 1.8.10 XSelectInput(3)
