Is there any example code or help available to compile a Helloworld external using C++, instead of C ?? I have the C version compiling. I have some existing code in C++ that I would like to make an external out of, by basically inserting it into the existing Helloworld app.

An alternative would be using flext, but then another thing to set up and figure out.

An example code wolud be great!

Hello,

Some time ago I ported a C++ lib to Pd, and documented some issues here:

http://www.katjaas.nl/pitchshift/soundtouch~.html

Main thing is, you have to declare your setup method as 'extern "C"', otherwise Pd can not find the symbol when trying to load the class.

By the way, GEM is in C++, so plenty example code.

Katja

Thanks, I also found out that if you switch the "0" to "A_NULL" in

helloworld_class = class_new(gensym("helloworld"),
(t_newmethod)helloworld_new,
0, sizeof(t_helloworld),
CLASS_DEFAULT, 0);

it compiles. I'm not sure if this will work for other than a helloworld external in general though.

...actually I see that in your example too, which I thought I had tried already! Hmmm. As for the EXTERN, I think mine is already setup in the compiler options, under linker ("/export:helloworld_setup ").