Copyright (C) 1992, Digital Equipment Corporation                         
 All rights reserved.                                                      
 See the file COPYRIGHT for a full description.                            
 Last modified on Fri Jan 29 15:15:13 PST 1993 by mhb    
      modified on Mon Aug 10  0:17:27 PDT 1992 by meehan 
      modified on Tue Jun 16 12:59:09 PDT 1992 by muller 
An AnchorSplit is a multi-split version of AnchorBtnVBT. The first child is the {\em anchor} that is displayed (such as a text string or an icon). The second child is the {\em menu} that is displayed when the anchor is activated. Attempts to give an anchor-split more than two children cause the extra children to be lost.

At initialization time, the feedback for the anchor is specified. It must be a childless multi-filter. Also at initialization time, a frame is specified that will surround the menu. The frame is also a childless multi-filter.

INTERFACE AnchorSplit;

IMPORT AnchorBtnVBT, FeedbackVBT, MultiFilter, VBT;

  <* SUBTYPE T <: MultiSplit.T *>
  T <: Public;
  Public = AnchorBtnVBT.T OBJECT
             <* LL <= VBT.mu *>
             init (f           : FeedbackVBT.T;
                   menuFrame   : MultiFilter.T;
                   n           : CARDINAL        := 0;
                   anchorParent: VBT.T           := NIL;
                   hfudge                        := 0.0;
                   vfudge                        := 0.0  ): T;
The call v.init(...) initializes v as an AnchorSplit. The feedback f and the multi-filter menuFrame must have no multi-children. That is, calling MultiFilter.Child(f) and MultiFilter.Child(menuFrame) must both return NIL. The other parameters, n, anchorParent, hfudge, and vfudge are the same as in AnchorBtnVBT.

END AnchorSplit.