On Mon, 27 Nov 2000, Daniel V. Oppenheim wrote:

I know that a lot of work has been going on to improve connection between Squeak and C via pluggable primitives. Is there a manual, documentation, URL, pointers, gotcha list, etc. that is easily accessible?

Nothing regarding Squeak documentation really deserves the "easily accessible" attribute yet ;)

But besides the usual advice to "look into the image" there's something at the Swiki (http://minnow.cc.gatech.edu/squeak/464) and in Andrew Greenberg's chapter in the Squeak book (http://coweb.cc.gatech.edu/squeakbook/3).

2.8 Plugins: http://minnow.cc.gatech.edu/squeak/1448 FFI: http://minnow.cc.gatech.edu/squeak/1414

Is conection limited to C DLLs or can you also connect to a C++ DLL?

C only. For C++ you have to write C wrappers.

Is there a callback mechanism or plans to make one available?

No - and nothing planned AFAIK.

Squeak Semaphore signal from C?

Yes.

Shared Memory? What about type checking? Any plans for an elaborate mechanism similar to the VisualWorks DLL Connect?

Not sure about these queations - you saw FFI?

-- Bert