XSelectInput(3X) XSelectInput(3X)
NAME
XSelectInput - select input events
SYNOPSIS
XSelectInput(display, w, event_mask)
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:
⊕ 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.
- 1 -
XSelectInput(3X) XSelectInput(3X)
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 Programming Manual
- 2 -