Converting Word Documents to PDF for Delphi

////////////////////////////////////////////////////////////////////////////////////////////////////
// This example was designed for using in Delphi 7 or higher.
//
// 1. Microsoft Word 97 or above should be installed and activated on your PC.
//
// 2. Universal Document Converter 5.2 or above should be installed, too.
//
// 3. Add "Universal Document Converter Type Library" and "Microsoft Word XX.0 Object Library" type libraries to the project.
//    XX is the Microsoft Office version installed on your computer.
//
//    Delphi 7:
//      Use the Project | Import Type Library menu.
//    Delphi 2006 or latter:
//      Use the Component | Import Component menu.
//
//    Clear the "Generate Component Wrapper" checkbox and click the "Create Unit" button (Delphi 7) or
//    select the "Create Unit" option (Delphi 2006 or latter).
//
// 4. Notice that the number of Microsoft Word's method parameters may depend on the Office version. 
//
////////////////////////////////////////////////////////////////////////////////////////////////////
program WordToPDF;
{$APPTYPE CONSOLE}
{$DEFINE LATE_BINDING}
uses
  SysUtils,
  Variants,
  Dialogs,
  ActiveX,
  Windows,
  Word_TLB,
  UDC_TLB;
  procedure PrintWordToPDF(WordDocFilePath: string);
  var
    objUDC: IUDC;
    Printer: IUDCPrinter;
    Profile: IProfile;
    WordApp: WordApplication;
    WordDoc: WordDocument;
    FilePath: OleVariant;
    ReadOnly: OleVariant;
    Missing: OleVariant;
    Background: OleVariant;
    SaveChanges: OleVariant;
  begin
    //Create a UDC object and get its interfaces
    objUDC := CoAPIWrapper.Create;
    Printer := objUDC.get_Printers('Universal Document Converter');
    Profile := Printer.Profile;
    //Use Universal Document Converter API to change settings of convertered document
    Profile.PageSetup.ResolutionX := 600;
    Profile.PageSetup.ResolutionY := 600;
    Profile.FileFormat.ActualFormat := FMT_PDF;
    Profile.FileFormat.PDF.ColorSpace := CS_TRUECOLOR;
    Profile.FileFormat.PDF.Multipage := MM_MULTI;
    Profile.OutputLocation.Mode := LM_PREDEFINED;
    Profile.OutputLocation.FolderPath := 'c:\UDC Output Files';
    Profile.OutputLocation.FileName := '&[DocName(0)] -- &[Date(0)] -- &[Time(0)].&[ImageType]';
    Profile.OutputLocation.OverwriteExistingFile := False;
    //Create a Word's Application object
    WordApp := CoWordApplication.Create;
    FilePath := WordDocFilePath;
    ReadOnly := True;
    Missing := Variants.EmptyParam; //This will be passed when ever we don?t want to pass value
    //Open document from file
    {$IFDEF LATE_BINDING}
    WordDoc := IDispatch(OleVariant(WordApp).Documents.Open(FileName := FilePath, ReadOnly := ReadOnly)) as WordDocument;
    {$ELSE}
    WordDoc := WordApp.Documents.Open(FilePath, Missing, ReadOnly, Missing, Missing, Missing,
      Missing, Missing,  Missing, Missing,  Missing, Missing, Missing, Missing, Missing, Missing);
    {$ENDIF}
    //Print all pages of the document
    Background := False;
    WordApp.ActivePrinter := 'Universal Document Converter';
    {$IFDEF LATE_BINDING}
    OleVariant(WordApp).PrintOut(Background := False);
    {$ELSE}
    WordApp.PrintOut(Background, Missing, Missing, Missing, Missing, Missing, Missing,
      Missing, Missing, Missing, Missing, Missing, Missing,
      Missing, Missing, Missing, Missing, Missing, Missing);
    {$ENDIF}
    //Close the document
    SaveChanges := False;
    {$IFDEF LATE_BINDING}
    OleVariant(WordDoc).Close(SaveChanges := SaveChanges);
    {$ELSE}
    WordDoc.Close(SaveChanges, Missing, Missing);
    {$ENDIF}
    //Quit the word application
    {$IFDEF LATE_BINDING}
    OleVariant(WordApp).Quit;
    {$ELSE}
    WordApp.Quit(Missing, Missing, Missing);
    {$ENDIF}
  end;
var
  TestFilePath: string;
begin
  TestFilePath := ExtractFilePath(ParamStr(0)) + 'TestFile.doc';
  try
    CoInitialize(nil);
    try
      PrintWordToPDF(TestFilePath);
    finally
      CoUninitialize;
    end;
  except
    on E: Exception do
      MessageDlg(E.ClassName + ' : ' + E.Message, mtError, [mbOK], 0);
  end;
end.