On Aug 20, 1:59 am, przemo_li <an.prze...@gmail.com> wrote:

> Why do you need "buffer" having ".size". Cant you pack both variables
> into class instance that do "anything" you want buffer to do?

Reading the ruby-ffi Pointer class source code, on any access to the
underlying memory it has a bound check which needs to know the size to
work correctly.  If the pointer thinks the size is zero, you can't get
the underlying data.  And since this is image data, there isn't a null
character to signify its end.

So I need to tell the pointer how long its buffer is - and I'm not
sure how to do that.

Thanks,

Charlie