XSendEvent(3X11) X11R5 XSendEvent(3X11)NAME
XSendEvent, XDisplayMotionBufferSize, XGetMotionEvents, XTimeCoord -
send events and pointer motion history structure
SYNTAX
Status XSendEvent(display, w, propagate, event_mask, event_send)
Display *display;
Window w;
Bool propagate;
long event_mask;
XEvent *event_send;
unsigned long XDisplayMotionBufferSize(display)
Display *display;
XTimeCoord *XGetMotionEvents(display, w, start, stop, nevents_return)
Display *display;
Window w;
Time start, stop;
int *nevents_return;
ARGUMENTS
display Specifies the connection to the X server.
event_mask
Specifies the event mask.
event_send
Specifies the event that is to be sent.
nevents_return
Returns the number of events from the motion history buffer.
propagate Specifies a Boolean value.
start
stop Specify the time interval in which the events are returned
from the motion history buffer. You can pass a timestamp or
w Specifies the window the window the event is to be sent to,.
DESCRIPTION
The function identifies the destination window, determines which
clients should receive the specified events, and ignores any active
grabs. This function requires you to pass an event mask. For a dis‐
cussion of the valid event mask names, see section 10.3. This function
uses the w argument to identify the destination window as follows:
· If w is the destination window is the window that contains the
pointer.
· If w is and if the focus window contains the pointer, the destina‐
tion window is the window that contains the pointer; otherwise,
the destination window is the focus window.
To determine which clients should receive the specified events, uses
the propagate argument as follows:
· If event_mask is the empty set, the event is sent to the client
that created the destination window. If that client no longer
exists, no event is sent.
· If propagate is the event is sent to every client selecting on
destination any of the event types in the event_mask argument.
· If propagate is and no clients have selected on destination any of
the event types in event-mask, the destination is replaced with
the closest ancestor of destination for which some client has
selected a type in event-mask and for which no intervening window
has that type in its do-not-propagate-mask. If no such window
exists or if the window is an ancestor of the focus window and was
originally specified as the destination, the event is not sent to
any clients. Otherwise, the event is reported to every client
selecting on the final destination any of the types specified in
event_mask.
The event in the structure must be one of the core events or one of the
events defined by an extension (or a error results) so that the X
server can correctly byte-swap the contents as necessary. The contents
of the event are otherwise unaltered and unchecked by the X server
except to force send_event to in the forwarded event and to set the
serial number in the event correctly.
returns zero if the conversion to wire protocol format failed and
returns nonzero otherwise. can generate and errors.
The server may retain the recent history of the pointer motion and do
so to a finer granularity than is reported by events. The function
makes this history available.
The function returns all events in the motion history buffer that fall
between the specified start and stop times, inclusive, and that have
coordinates that lie within the specified window (including its bor‐
ders) at its present placement. If the server does not support motion
history, or if the start time is later than the stop time, or if the
start time is in the future, no events are returned, and returns NULL.
If the stop time is in the future, it is equivalent to specifying can
generate a error.
STRUCTURES
The structure contains:
typedef struct {
Time time;
short x, y;
} XTimeCoord;
The time member is set to the time, in milliseconds. The x and y mem‐
bers are set to the coordinates of the pointer and are reported rela‐
tive to the origin of the specified window.
DIAGNOSTICS
Some numeric value falls outside the range of values accepted by the
request.
Unless a specific range is specified for an argument, the
full range defined by the argument's type is accepted. Any
argument defined as a set of alternatives can generate this
error.
A value for a Window argument does not name a defined Window.
SEE ALSOXAnyEvent(3X11), XIfEvent(3X11), XNextEvent(3X11), XPutBackEvent(3X11)
Xlib - C Language X Interface
XSendEvent(3X11)
