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XSetInputFocus(3)		XLIB FUNCTIONS		     XSetInputFocus(3)

       XSetInputFocus, XGetInputFocus -	control	input focus

       int  XSetInputFocus(Display *display, Window focus, int revert_to, Time

       int XGetInputFocus(Display *display,  Window  *focus_return,  int  *re-

       display	 Specifies the connection to the X server.

       focus	 Specifies the window, PointerRoot, or None.

		 Returns the focus window, PointerRoot,	or None.

       revert_to Specifies  where the input focus reverts to if	the window be-
		 comes not viewable.  You can pass  RevertToParent,  RevertTo-
		 PointerRoot, or RevertToNone.

		 Returns  the  current focus state RevertToPointerRoot,	or Re-

       time	 Specifies the time.  You can pass either a timestamp or  Cur-

       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 spec-
       ified  time  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:

       o    If focus is	None, all keyboard events are discarded	 until	a  new
	    focus window is set, and the revert_to argument is ignored.

       o    If	focus is a window, it becomes the keyboard's focus window.  If
	    a generated	keyboard event would normally be reported to this win-
	    dow	or one of its inferiors, the event is reported as usual.  Oth-
	    erwise, the	event is reported relative to the focus	window.

       o    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 be-
       comes not viewable, the X server	evaluates the  revert_to  argument  to
       determine the new focus window as follows:

       o    If	revert_to  is  RevertToParent, the focus reverts to the	parent
	    (or	the closest viewable ancestor),	and the	new revert_to value is
	    taken to be	RevertToNone.

       o    If revert_to is RevertToPointerRoot	or RevertToNone, the focus re-
	    verts to PointerRoot or None, respectively.	 When  the  focus  re-
	    verts, 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.

       BadValue	 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.

       BadWindow A value for a Window argument does not	name a defined Window.

       Xlib - C	Language X Interface

X Version 11			 libX11	1.6.12		     XSetInputFocus(3)


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