[DUG]: Help with C to Pascal translation and COM interface

[Neil Anderson]

Hello

I am using some 3rdparty COM objects and would like some using the
following methods,

I have imported the type library :

  IDirectBufferAccess = interface
    ['{F080A41A-28E0-11D2-80B6-00A0C92296F1}']
    function SetRequestBufferDirect(ReqBufferLen: Integer; var
ReqBuffer: Integer; 
                                    var Success: WordBool): HResult;
stdcall;
    function GetReplyBufferDirect(RepBufferLen: Integer; var RepBuffer:
Integer; 
                                  var Success: WordBool): HResult;
stdcall;
  end;

The example using the method in C++  is

        hResult = m_pAddContactDirectBuffer->GetReplyBufferDirect(
                        sizeof(reply_hdr_def), (long*)&replyHdr,
&vt_success);

I am not sure what (long*)&replyHdr is doing. I think they are passing
the address of the buffer.
The imported type lib declared as integer (var ReqBuffer: Integer).

Could someone who understands C++ please help ?

Neil

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