How do you deal with event functions?

[Jose Marin <jose_marin2@...>]

Hi.

With Lua 5.1, is there some "proper" way of store
references to user Lua functions, to be called later?

I know that this was already discussed, but it was 
before the 5.1 version. I wonder if this version has a
better solution to this problem.

For example, the user could create a function to deal
with keys pressed, like this:

function OnKeyPressed(key)
...
end

So, what's the best way to register this function to
C, to be later called?

I see 2 ways of do this:

1) provide a "SetOnKeyPressed" to Lua, and in the code
it would be called like this:

   SetOnKeyPressed(OnKeyPressed)

Then, in the C main window callback, in the message
WM_KEYDOWN, the function would be called, passing the
key pressed code.

2)provide the same SetOnKeyPressed function, but the
user would pass a string, like this:

SetOnKeyPressed("OnKeyPressed")

Then, in the C main window callback, in the message
WM_KEYDOWN, the function would be called, using the
lua_getglobal function, passing the function name
provided by the user. And then calling the function
lua_pcall.

In Lua 5.1, what's the pro's and con's of these 2
methods?

Is there a better way of do this?


Thanks for any tip!

Jose




		
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