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XtOwnSelection(3Xt)


X11R6


NAME

  XtOwnSelection, XtOwnSelectionIncremental, XtDisownSelection - set
  selection owner


SYNOPSIS

  Boolean XtOwnSelection(w, selection, time, convert_proc, lose_selection,
  done_proc)
	  Widget w;
	  Atom selection;
	  Time time;
	  XtConvertSelectionProc convert_proc;
	  XtLoseSelectionProc lose_selection;
	  XtSelectionDoneProc done_proc;

  Boolean XtOwnSelectionIncremental(w, selection, time, convert_callback,
  lose_callback, done_callback, cancel_callback, client_data)
	  Widget w;
	  Atom selection;
	  Time time;
	  XtConvertSelectionIncrProc convert_callback;
	  XtLoseSelectionIncrProc lose_callback;
	  XtSelectionDoneIncrProc done_callback;
	  XtCancelConvertSelectionProc cancel_callback;
	  XtPointer client_data;

  void XtDisownSelection(w, selection, time)
	  Widget w;
	  Atom selection;
	  Time time;


ARGUMENTS

  convert_proc
      Specifies the procedure that is to be called whenever someone requests
      the current value of the selection.

  done_proc
      Specifies the procedure that is called after the requestor has received
      the selection or NULL if the owner is not interested in being called
      back.

  lose_selection
      Specifies the procedure that is to be called whenever the widget has
      lost selection ownership or NULL if the owner is not interested in
      being called back.

  selection
      Specifies an atom that describes the type of the selection (for
      example, XA_PRIMARY, XA_SECONDARY, or XA_CLIPBOARD).

  time
      Specifies the timestamp that indicates when the selection ownership
      should commence or is to be relinquished.

  w   Specifies the widget that wishes to become the owner or to relinquish
      ownership.


DESCRIPTION

  The XtOwnSelection function informs the Intrinsics selection mechanism that
  a widget believes it owns a selection. It returns True if the widget has
  successfully become the owner and False otherwise. The widget may fail to
  become the owner if some other widget has asserted ownership at a time
  later than this widget. Note that widgets can lose selection ownership
  either because someone else asserted later ownership of the selection or
  because the widget voluntarily gave up ownership of the selection. Also
  note that the lose_selection procedure is not called if the widget fails to
  obtain selection ownership in the first place.

  The XtOwnSelectionInrcremental procedure informs the Intrinsics incremental
  selection mechanism that the specified widget wishes to own the selection.
  It returns True if the specified widget successfully becomes the selection
  owner or False otherwise. For more information about selection, target, and
  time, see Section 2.6 of the Inter-Client Communication Conventions Manual.

  A widget that becomes the selection owner using XtOwnSelectionIncremental
  may use XtDisownSelection to relinquish selection ownership.

  The XtDisownSelection function informs the Intrinsics selection mechanism
  that the specified widget is to lose ownership of the selection. If the
  widget does not currently own the selection either because it lost the
  selection or because it never had the selection to begin with,
  XtDisownSelection does nothing.

  After a widget has called XtDisownSelection, its convert procedure is not
  called even if a request arrives later with a timestamp during the period
  that this widget owned the selection. However, its done procedure will be
  called if a conversion that started before the call to XtDisownSelection
  finishes after the call to XtDisownSelection.


SEE ALSO

  XtAppGetSelectionTimeout(3Xt), XtGetSelectionValue(3Xt)

  X Toolkit Intrinsics -- C Language Interface

  Xlib	C Language X Interface

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