[PD-dev] need to find symbol of current patch (from code)

[Tim Blechmann]

>   t_canvas *z = canvas_getcurrent();

iirc, it's only allowed to call this in the constructor ...

a t_canvas is a _glist possibly you can access it with z->gl_name ...
(have a look at g_canvas.h for implementation details)
but be aware that you are not allowed to include g_canvas.h, since it's
a private header... so your binaries will only work with different
versions of pd

hth .... tim

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