lua_pcall error

["Wesley Smith" <wesley.hoke@...>]

Hi,
I'm trying to figure out how to call functions with no arguments or
return values from C.  I have a function draw:

function draw()
	vert = {-1, 0, 0}
	
	gl.Begin("LINES")
		gl.Color(1, 1, 0)
		gl.Vertex(vert)
		
		vert[1], vert[2] = vert[2], vert[1]
		print(vert[1] .. " " .. vert[2] .. " ".. vert[3])
		gl.Vertex(vert)
		gl.Vertex(0.5, 0, 1)
		gl.Vertex(-0.5, 0, 1)
	gl.End()
end

and am trying to call this from C using the following:

err = luaL_loadstring(x->lua, *(x->texthandle));
lua_getglobal(x->lua, "draw");
err = lua_pcall(x->lua, 0, 0, 0);

This gives me the error "attempt to call a nil value".  However, when I do this:

err = luaL_loadstring(x->lua, *(x->texthandle));
err = lua_pcall(x->lua, 0, LUA_MULTRET, 0);

and have the code in the draw function in global scope things work.
I've been knocking my head against the computer screen trying to
figure this out.  I know it's basic, but does anyone understand what's
going on here?

thanks,
wes