How can I pass a Delphi array of integers to a Prism DLL?

Question

I've read and successfully tried the answer to How can I pass a Delphi string to a Prism DLL?, but wondered if it was possible to use a similar method to pass a Delphi array of integers (static or dynamic) to a Prism DLL.

Answer 1

The simpliest (without marshalling) is to encode the array using BASE16 or BASE64 into a unicode string and pass a string.

Answer 2

I don't have time to write a full working example but here are the key things to adapt the example you mention in the other question:

declare a type with your buffer length

type
  [MarshalAs(UnmanagedType.LPArray)]
  TBuffer = array[0..-length-]of integer;

and to make operations in the buffer remember to use the "pinned" modifier

var BufferPointer: ^TBuffer; pinned;

...

  BufferPointer := @the_buffer[0];