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XtHasCallbacks()					      XtHasCallbacks()

Name
  XtHasCallbacks - determine the status of a widget's callback list.

Synopsis
  XtCallbackStatus XtHasCallbacks(object, callback_name)
	 Widget object;
	 String callback_name;

Inputs
  object      Specifies	 the  object;  may be of class Object or any sub‐
	      class thereof.

  callback_name
	      Specifies the callback list to be checked.

Returns
  An XtCallbackStatus value.

Description
  XtHasCallbacks() checks the widget for a resource named  callback_name.
  If  the  resource  does not exist or is not of type XtRCallback, XtHas‐
  Callbacks() returns XtCallbackNoList.	 If the callback list exists  but
  is  empty, it returns XtCallbackHasNone.  If the callback list contains
  at least one callback procedure, it returns XtCallbackHasSome.

Structures
     typedef enum {
	 XtCallbackNoList,
	 XtCallbackHasNone,
	 XtCallbackHasSome
     } XtCallbackStatus;

See Also
  XtAddCallbacks(1), XtCallCallbacks(1), XtCallCallbackList(1).

Xt - Callbacks						      XtHasCallbacks()

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