XtOwnSelection(3Xt)

NAME
       XtOwnSelection, XtOwnSelectionIncremental, XtDisown-
       Selection - 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, con-
       vert_callback, lose_callback, done_callback, cancel_call-
       back, 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 selec-
       tion 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 speci-
       fied 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 XtOwn-
       SelectionIncremental may use XtDisownSelection to relin-
       quish 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 cur-
       rently own the selection either because it lost the selec-
       tion 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 XtDisown-
       Selection finishes after the call to XtDisownSelection.

SEE ALSO
       XtAppGetSelectionTimeout(3Xt) XtGetSelectionValue(3Xt) 
       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface