[PD-dev] updated Window menu and logic for 0.43

[Hans-Christoph Steiner]

Hey Miller, IOhannes and anyone else who is interested,

Last night I committed another C-side changes to the pd-gui-rewrite  
branch, so I thought I'd explain it here. The original code would  
rebuild the whole window menu in 'pd' every time a canvas was vised or  
unvised, and when [pd] boxes were updated.  That means going through  
the whole tree of instantiated canvases each time.

http://pure-data.svn.sourceforge.net/viewvc/pure-data?view=rev&revision=12963
http://pure-data.svn.sourceforge.net/viewvc/pure-data?view=rev&revision=12965

With these commits, 'pd' sends a list of parent windows when a canvas  
is created in 'pd-gui' (i.e. pdtk_canvas_new), and just sends a  
command to 'pd-gui' to update the windowlist whenever there is a vis,  
unvis, or [pd] box update.  And the nifty new feature is that it shows  
all vised canvases in a tree on the Window menu.

.hc


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