NAME

XtCallCallbacks, XtHasCallbacks - process callbacks

SYNTAX

void XtCallCallbacks(w, callback_name, call_data)
      Widget w;
      String callback_name;
      caddr_t call_data;

typedef enum {XtCallbackNoList, XtCallbackHasNone,
XtCallbackHasSome} XtCallbackStatus;

XtCallbackStatus XtHasCallbacks(w, callback_name)
      Widget w;
      String callback_name;

ARGUMENTS

callback_name
          Specifies the callback list to be executed or
          checked.

call_data Specifies a callback-list specific data value to
          pass to each of the callback procedure in the
          list.

w         Specifies the widget.

DESCRIPTION

The XtCallCallbacks function calls each procedure that is
registered in the specified widget's callback list.

The XtHasCallbacks function first checks to see if the wid-
get has a callback list identified by callback_name.  If the
callback list does not exist, XtHasCallbacks returns
XtCallbackNoList.  If the callback list exists but is empty,
it returns XtCallbackHasNone.  If the callback list exists
and has at least one callback registered, it returns
XtCallbackHasSome.

SEE ALSO

     XtAddCallback(3Xt)
     X Toolkit Intrinsics - C Language Interface
     Xlib - C Language X Interface

XWIN 3.0               Last change: 9/1/88                 .ie t

XWIN 3.0               Last change: 9/1/88                 .ie t