Re: Lua and system integration

[David Given <dg@...>]

majkinetor majkinetor wrote:
[...]
> You mean, I am able to create scripting language for my app that supports C
> aside Lua?
> Something like asm integration in mainstreem languages, via asm{ ..}
> directive ?
> Its hard for me to beleive that, can you provide me an example
> ? Somehow I think we didn't understand eatchother...

I'm not entirely sure what you mean here. A programmer in C can very easily
register functions with the Lua VM so that Lua can call out to C, and it's
even easier to look up Lua functions and call them from C.

[...]
> Now, If I don't provide MessageBox wrapper user must be able to do call this
> function from adequate Windows DLL.
> I supose there is some kind of DllCall() function that alows for this like
> in AutoHotKey automatition language:
> 
>      DllCall("user32.dll\MessageBox", "uint", 0, "uint", .... "str",
> "myString".... )

You may be able to do this; it all depends on the way DLLs are called (I'm not
a Windows user). I know it is possible to call COM objects in a generic manner
and I'm reasonably sure there's a .net interface.

[...]
> Applications in windows run in separate process space. You can't access
> anything from adr space of other process except using specific methods of
> code injection so to fool Windows it native code.

But is this necessary to write a Windows window manager? I know that at least
on Unix, a window manager is a standalone application that communicates with
its child apps via message passing. That may not be true for Windows (I know
that if a Windows app stops responding, you suddenly find yourself unable to
move its windows, irritatingly enough).

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