[Newbies] Win32 OS functions

[david.briant at ubs.com]

Thanks. Are there examples of how to do a call-back into Smalltalk or
read from a Windows message queue?

It's been a while since I compiled a VM (1995 was the last time in VW2)
and I've not used Smalltalk since '97 so not totally sure what I snow
possible. I'd like to get two squeak images to talk together using
memory mapped files and asynchronous windows message sends or possibly
named pipes.

Thanks for your help

David

-----Original Message-----
From: beginners-bounces at lists.squeakfoundation.org
[mailto:beginners-bounces at lists.squeakfoundation.org] On Behalf Of David
T. Lewis
Sent: 22 December 2006 13:46
To: A friendly place to get answers to even the most basic questions
aboutSqueak.
Subject: Re: [Newbies] Win32 OS functions

On Fri, Dec 22, 2006 at 08:38:01AM -0000, david.briant at ubs.com wrote:
> Hi
> 
> I want to play around with some cross-thread and cross-process stuff
in
> Windows XP. E.g. memory mapped files, windows message sends, named
pipes
> and so on and was wondering how to access these methods in Squeak. Any
> pointers would be welcome.

The easiest way to do things like this is with the Foreign Function
Interface (FFI). Usually you can find this in the Squeak image in
the "FFI-*" categories (but for some versions you may need to load it
from SqueakMap). Look at category 'FFI-Examples-Win32' for examples of
what can be done.

This is definitely getting out of "newbie" territory, but if you are
comfortable building your own VM and plugins, you can also load the
OSProcessPlugin from SqueakMap. This provides some Win32 thread and
handle primitives that might be useful to you, or that you can modify
to meet your needs.

Have fun,

Dave

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