XtGetSelectionValue(3Xt)             SysV             XtGetSelectionValue(3Xt)



NAME
     XtGetSelectionValue, XtGetSelectionValues,
     XtGetSelectionValueIncremental, XtGetSelectionValuesIncremental - obtain
     selection values

SYNTAX
     void XtGetSelectionValue(w, selection, target, callback, client_data,
     time)
           Widget w;
           Atom selection;
           Atom target;
           XtSelectionCallbackProc callback;
           caddr_t client_data;
           Time time;

     void XtGetSelectionValues(w, selection, targets, count, callback,
     client_data, time)
           Widget w;
           Atom selection;
           Atom *targets;
           int count;
           XtSelectionCallbackProc callback;
           caddr_t client_data;
           Time time;

     void XtGetSelectionValueIncremental(w, selection, target,
     selection_callback, cancel_callback,
                            client_data, time)
          Widget w;
          Atom selection;
          Atom target;
          XtSelectionIncrCallbackProc selection_callback;
          XtCancelSelectionCallbackProc cancel_callback;
          caddr_t client_data;
          Time time;

     void XtGetSelectionValuesIncremental(w, selection, targets, count,
     selection_callback,
                                cancel_callback, client_data, time)
          Widget w;
          Atom selection;
          Atom *targets;
          int count;
          XtSelectionIncrCallbackProc selection_callback;
          XtCancelConvertSelectionProc cancel_callback;
          caddr_t client_data;
          Time time;

ARGUMENTS
     callback  Specifies the callback procedure that is to be called when the
               selection value has been obtained.

     cancel_callback
               Specifies the callback procedure that is to be called if the
               connection is lost.

     client_data
               Specifies the argument that is to be passed to the specified
               procedure when it is called.

     client_data

               Specifies the client data (one for each target type) that is
               passed to the callback procedure when it is called for that
               target.

     count     Specifies the length of the targets and client_data lists.

     selection Specifies the particular selection desired (that is, primary or
               secondary).

     selection_callback
               Specifies the callback procedure that is to be called to obtain
               the next incremental chunk of data or for each selection value
               obtained.

     target    Specifies the type of the information that is needed about the
               selection.

     targets   Specifies the types of information that is needed about the
               selection.

     time      Specifies the timestamp that indicates when the selection value
               is desired.

     w         Specifies the widget that is making the request.

DESCRIPTION
     The XtGetSelectionValue function requests the value of the selection that
     has been converted to the target type. The specified callback will be
     called some time after XtGetSelectionValue is called; in fact, it may be
     called before or after XtGetSelectionValue returns.

     The XtGetSelectionValues function is similar to XtGetSelectionValue
     except that it takes a list of target types and a list of client data and
     obtains the current value of the selection converted to each of the
     targets.  The effect is as if each target were specified in a separate
     call to XtGetSelectionValue.  The callback is called once with the
     corresponding client data for each target.  XtGetSelectionValues does
     guarantee that all the conversions will use the same selection value
     becaues the ownership of the selection cannot change in the middle of the
     list, as would be when calling XtGetSelectionValue repeatedly.

     The XtGetSelectionValueIncremental function is similar to
     XtGetSelectionValue except that the callback procedure will be called
     repeatedly each time upon delivery of the next segment of the selection
     value.  The end of the selection value is detected when callback is
     called with a value of length zero.  If the transfer of the selection is
     aborted in the middle of a transfer, the cancel_callback procedure is
     called so that the requestor can dispose of the partial selection value
     it has collected up until that point.

     The XtGetSelectionValuesIncremental function is similar to
     XtGetSelectionValueIncremental except that it takes a list of targets and
     client_data.  XtGetSelectionValuesIncremental is equivalent to calling
     XtGetSelectionValueIncremental successively for each target/client_data
     pair.  XtGetSelectionValuesIncremental does guarantee that all the
     conversions will use the same selection value because the ownership of
     the selection cannot change in the middle of the list, as would be
     possible when calling XtGetSelectionValueIncremental repeatedly.

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