XSetInputFocus(3X11)													      XSetInputFocus(3X11)

NAME

       XSetInputFocus, XGetInputFocus - control input focus

SYNOPSIS

       XSetInputFocus(display, focus, revert_to, time)
	       Display *display;
	       Window focus;
	       int revert_to;
	       Time time;

       XGetInputFocus(display, focus_return, revert_to_return)
	       Display *display;
	       Window *focus_return;
	       int *revert_to_return;

ARGUMENTS

       Specifies  the  connection  to  the X server.  Specifies the window, PointerRoot, or None.  Returns the focus window, PointerRoot, or None.
       Specifies where the input focus reverts to if the window becomes not viewable. You can pass RevertToParent, RevertToPointerRoot, or Revert-
       ToNone.	Returns the current focus state (RevertToParent, RevertToPointerRoot, or RevertToNone).  Specifies the time. You can pass either a
       timestamp or CurrentTime.

DESCRIPTION

       The XSetInputFocus function changes the input focus and the last-focus-change time. It has no effect if the specified time is earlier  than
       the  current  last-focus-change time or is later than the current X server time. Otherwise, the last-focus-change time is set to the speci-
       fied time (CurrentTime is replaced by the current X server time).  XSetInputFocus causes the X server  to  generate  FocusIn  and  FocusOut
       events.

       Depending on the focus argument, the following occurs: If focus is None, all keyboard events are discarded until a new focus window is set,
       and the revert_to argument is ignored.  If focus is a window, it becomes the keyboard's focus window.  If a generated keyboard event  would
       normally  be  reported to this window or one of its inferiors, the event is reported as usual. Otherwise, the event is reported relative to
       the focus window.  If focus is PointerRoot, the focus window is dynamically taken to be the root window of whatever screen the  pointer	is
       on at each keyboard event. In this case, the revert_to argument is ignored.

       The  specified  focus  window must be viewable at the time XSetInputFocus is called, or a BadMatch error results. If the focus window later
       becomes not viewable, the X server evaluates the revert_to argument to determine the new focus window as follows: If revert_to is RevertTo-
       Parent,	the  focus  reverts to the parent (or the closest viewable ancestor), and the new revert_to value is taken to be RevertToNone.	If
       revert_to is RevertToPointerRoot or RevertToNone, the focus reverts to PointerRoot or None, respectively. When the  focus  reverts,  the  X
       server generates FocusIn and FocusOut events, but the last-focus-change time is not affected.

       XSetInputFocus can generate BadMatch, BadValue, and BadWindow errors.

       The XGetInputFocus function returns the focus window and the current focus state.

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 ALSO

       XWarpPointer(3X11)

       Xlib -- C Language X Interface

															      XSetInputFocus(3X11)