pdfGetBuffer

Purpose — Fetch the finished document bytes after an in-memory close.

Description — Valid after pdfCreateNewPDFW(pdf, NULL) … pdfCloseFile. Sets BufSize to the byte count and returns the instance-owned pointer to the PDF bytes. The buffer lives until the next document is opened on the instance or the instance is deleted — copy it out immediately. Passing a null BufSize reference returns NULL defensively.

const char* __stdcall pdfGetBuffer(PPDF IPDF, uint32_t* BufSize);

function pdfGetBuffer(const IPDF: PPDF; var BufSize: Cardinal): PAnsiChar; stdcall; external 'LumasPdf.dll';

Example — in-memory generation (Delphi)

var
  Pdf: PPDF; Size: Cardinal; P: PAnsiChar; Bytes: TBytes;
begin
  Pdf := pdfNewPDF;
  try
    if not pdfCreateNewPDFW(Pdf, nil) then Abort;   // memory mode
    pdfAppend(Pdf);
    // ... content ...
    pdfEndPage(Pdf);
    if not pdfCloseFile(Pdf) then Abort;
    P := pdfGetBuffer(Pdf, Size);
    if (P = nil) or (Size = 0) then Abort;
    SetLength(Bytes, Size);
    Move(P^, Bytes[0], Size);                       // copy NOW
  finally
    pdfDeletePDF(Pdf);
  end;
end;

See also — pdfCreateNewPDF, pdfCloseFile

C# (P/Invoke)

public static extern IntPtr pdfGetBuffer(IntPtr IPDF, ref uint BufSize);