Hi,
My guess is that this has been asked before, but I didn't find it...not exactly sure what to search for...
Anyway, I am trying to attach functions that return :void but use the input parameters to hold the return values. e.g. A function that gets a value and returns it as a string and length. So say my C-function declaration is:
void GetMyString(const long reference, char *buffer, int *size)
My guess, and I'm sure it doesn't work because I tried it, was to do:
buffer = FFI::MemoryPointer.new(:char, 256)
size = FFI::MemoryPointer.new(:int,1)
attach_function :GetMyString, [ :long, buffer, size ], :void
I got a "can't resolve type" error when I tried that.
What's the correct way to do it?
Thanks,
Rob
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