Thanks, Charles.

What if the Vanilla external has CLASS_DEFAULT widgetbehavior?  Then Pd assigns 
c->c_wb to text_widgetbehavior.Since text_widgetbehavior is a hard-coded 
widgetbehavior it is guaranteed to have the number of members expected bythe 
code in g_editor.c.
Is this right?

-Jonathan
 


     On Monday, July 27, 2015 1:28 PM, Charles Z Henry <czhe...@gmail.com> 
wrote:
   

 On Mon, Jul 27, 2015 at 12:08 PM, Jonathan Wilkes via Pd-list
<pd-list@lists.iem.at> wrote:

> Background info: Pd-l2ork has an extra member at the _end_ of the
> t_widgetbehavior struct.  This member is used to do accelerated displacing
> of a selection of objects in Pd.

This type of modification isn't meant to be binary compatible in both
directions.  Your Pd-Vanilla externals with the Vanilla
t_widgetbehavior struct will not work in Pd-l2ork, because the struct
is smaller.

When Pd-l2ork tries to access those elements off the end of the
t_widgetbehavior struct, it should seg fault.


  
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