XISETFOCUS(3)															     XISETFOCUS(3)

NAME

       XISetFocus, XIGetFocus - set or get the device's focus.

SYNOPSIS

       #include <X11/extensions/XInput2.h>

       Status XISetFocus( Display *display,
			  int deviceid,
			  Window focus,
			  Time time);

       Status XIGetFocus( Display *display,
			  Window *focus_return);

       display
	      Specifies the connection to the X server.

       deviceid
	      Specifies the device whose focus is to be queried or
	      changed.

       focus
	      The new focus window.

       focus_return
	      Returns the current focus window.

       time
	      A valid timestamp or CurrentTime.

DESCRIPTION

	   XISetFocus changes the focus of the specified device ans its
	   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 specified time.
	   CurrentTime is replaced by the current X server time).
	   XISetFocus causes the X server to generate core, XI and XI2
	   focus events.

	   If the focus window is None all keyboard events by this device
	   are discarded until a new focus window is set. Otherwise, if
	   focus is a window, it becomes the device's focus window. If a
	   generated device 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.

	   The specified focus window must be viewable at the time
	   XISetFocus is called, or a BadMatch error results. If the focus
	   window later becomes not viewable, the focus reverts to the
	   parent (or the closest viewable ancestor. When the focus
	   reverts, the X server generates core, XI and XI2 focus events
	   but the last-focus-change time is not affected.

	   Attempting to set the focus on a master pointer device or an
	   attached slave device will result in a BadDevice error.

	   XISetFocus can generate BadDevice, BadMatch, BadValue, and
	   BadWindow errors.

DIAGNOSTICS

	   BadValue
		  A value is outside of the permitted range.

	   BadDevice
		  An invalid device was specified. The device does not
		  exist or is not a appropriate for the type of change.

	   BadMatch
		  The window is not viewable.

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

								    03/09/2013							     XISETFOCUS(3)