XSelectInput(3X11)XSelectInput(3X11)NAMEXSelectInput - select input events
SYNOPSIS
XSelectInput(display, w, event_mask)
Display *display;
Window w;
long event_mask;
ARGUMENTS
Specifies the connection to the X server. Specifies the event mask.
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: 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 SubstructureRedirect‐
Mask. 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
A value for a Window argument does not name a defined Window.
SEE ALSO
Xlib -- C Language X Interface
XSelectInput(3X11)
