[DeveloperX]

I've got a question for someone who may have had this problem before.

Now, first I know this isn't the lua support line, but I know that at least one person here has used LUA here, and I figured I'd ask someone I know instead of posting on yet another forum.

Question: How can I pass my allegro BITMAP* pointer back to lua, and have it passed around my lua script, and returned back to my C host?

BITMAP* GetDoubleBuffer();

For this function, I tried this code:

[Bjorn]

You should use lua_pushlightuserdata for putting your pointers on the Lua stack. When retrieving such data as arguments to C functions, optionally use luaL_checktype with LUA_TLIGHTUSERDATA to check the argument type before using lua_touserdata to get the pointer.

I hope this is still useful to you...

[DeveloperX]

thank you! quite useful indeed. :)
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