XtOwnSelection(3Xt)                  SysV                  XtOwnSelection(3Xt)



NAME
     XtOwnSelection, XtOwnSelectionIncremental, XtDisownSelection - set
     selection owner

SYNTAX
     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;
          caddr_t client_data;

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

ARGUMENTS
     cancel_callback
               Specifies the callback procedure.

     client_data
               Specifies the argument that is to be passed to the appropriate
               procedure when one of the condition occurs.

     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 XtOwnSelectionIncremental informs the Intrinsics incremental
     selection mechanism that the specified widget believes it owns the
     selection.  It returns True if the specified widget successfully becomes
     the selection owner or False otherwise.

     Widgets that use the incremental transfer mechanism should 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