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# file: runme.m
# This file illustrates the cross language polymorphism using directors.
example
OctCallback=@() subclass(example.Callback(), \
'run',@(self) printf("OctCallback.run()\n"));
# Create an Caller instance
caller = example.Caller();
# Add a simple C++ callback (caller owns the callback, so
# we disown it first)
printf("Adding and calling a normal C++ callback\n");
printf("----------------------------------------\n");
callback = example.Callback().__disown();
caller.setCallback(callback);
caller.call();
caller.delCallback();
printf("Adding and calling a Octave callback\n");
printf("------------------------------------\n");
# Add a Octave callback (caller owns the callback, so we
# disown it first by calling __disown).
caller.setCallback(OctCallback().__disown())
caller.call();
caller.delCallback();
printf("Adding and calling another Octave callback\n");
printf("------------------------------------------\n");
# Let's do the same but use the weak reference this time.
callback = OctCallback().__disown();
caller.setCallback(callback);
caller.call();
caller.delCallback();
# careful-- using callback here may cause problems; octave_swig_type still
# exists, but is holding a destroyed object (the C++ example.Callback).
# to manually drop the octave-side reference, you can use
clear callback;
# Let's call them directly now
printf("Calling Octave and C++ callbacks directly\n");
printf("------------------------------------------\n");
a = OctCallback();
a.run();
a.Callback.run();
# All done.
printf("octave exit\n");
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