procedure TForm1.Button1Click(Sender: TObject);
var
  Pd : TPrintDlg;
  DocInfo: TDocInfo;
begin
  FillChar(Pd, sizeof(Pd), #0); 
  Pd.lStructSize := sizeof(Pd);
  Pd.hWndOwner := Form1.Handle;
  Pd.Flags := PD_RETURNDC;
 
  if PrintDlg(pd) then begin
     FillChar(DocInfo, sizeof(DocInfo), #0);
     DocInfo.cbSize := SizeOf(DocInfo);
     GetMem(DocInfo.lpszDocName, 32);
     GetMem(DocInfo.lpszOutput, MAX_PATH);
     lStrCpy(DocInfo.lpszDocName, 'My Document');
     {Add this line to print to a file }
     lStrCpy(DocInfo.lpszOutput, 'C:\Download\Test.doc');
     StartDoc(Pd.hDc, DocInfo);
 
     StartPage(Pd.hDc);
     TextOut(Pd.hDc, 100, 100, 'Page 1', 6);
     EndPage(Pd.hDc);
     StartPage(Pd.hDc);
     TextOut(Pd.hDc, 100, 100, 'Page 2', 6);
     EndPage(Pd.hDc);
     EndDoc(Pd.hDc);
     FreeMem(DocInfo.lpszDocName, 32);
     FreeMem(DocInfo.lpszOutput, MAX_PATH);
   end;
end;