Re: Passing binary data to dll

[Digital <forumme5487@...>]

Well the "data" var lets say is simply a picture or file alike from 
io.open("file.dat","rb"); etc ...

"somevar" is just used to call a function from the dll. I guess it can 
equally be used as "modulename.testfunc()" but using "somevar" makes it 
easier to call functions etc. I've seen dozens of modules/packages that 
use it that way.

I have made several dlls this way and they always have worked fine. 
Never any problems. Just whenever I pass binary data it will cease to 
function for some reason.

On 8/15/2012 9:45 AM, Robert G. Jakabosky wrote:
> On Tuesday 14, Digital wrote:
> > Alright, I added it.
> >
> > But even before it gets to that it will error out by saying "string
> > expected, got userdata" ??
> How are you creating the binary data?
>
> Also be careful how you call the 'testfunc' from Lua
>
> somevar = require "modulename"
> data = "binary data" -- how is this data created?
> somevar.testfunc(data) -- here it will have only one parameter: data
> somevar:testfunc(data) -- here it will have two parameters: somevar & data
> ------------^ note the ":" instead of "."
>
> If somevar is a userdata value then that might be why you are getting that
> error.