On May 20, 2010, at 1:00 PM, DA wrote:

> Here's how I'm getting the array:
> 
> // c struct:
> typedef struct {
> 	UIntT len;
> 	F_TextItemT *val;
> } F_TextItemsT;
> 
> // ruby def:
> class FTextItemsT < FFI::Struct
>    layout :len, :uint,
>      :val, :pointer
> end
> 
> // ruby code:
> 
> tis = FM.FApiGetText(docid, flowid, (FM.FTIString | FM.FTILineEnd));
> parr = tis[:val].read_array_of_pointer(tis[:len])
> puts "tis len: #{tis[:len]}"
> 
> The tis[:len] gives me the same value as calling this code in c, so
> I'm pretty sure the FApiGetText call is working and I'm getting a
> valid struct returned. Am I using read_array_of_pointer wrong?

That looks kind of funky to me. In the F_TextItemsT C struct, it shows *val which is just a single pointer. There is no array of pointers to read from at that location. I believe the syntax for arrays of pointers are more like:

struct {
  int len;
  item_t **list;
}

Note the double-asterisk.

Have you written this in C to see how to get each F_TextItemT?

cr