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NAME

       XtOwnSelection, XtOwnSelectionIncremental, XtDisownSelection - set
       selection owner

SYNTAX

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

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

       void XtDisownSelection(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 XtOwnSelectionIncremental 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(3), XtGetSelectionValue(3)
       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface



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