Overwrite Property

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
public bool _result = false; 
public ConvertCtrlForm _form = new ConvertCtrlForm(); 
 
private ConvertCtrl _convertCtrl = null; 
private LTDvdWriter _dvdWriter = null; 
 
public void DvdWriterExample() 
{ 
   // reference the convert control 
   _convertCtrl = _form.ConvertCtrl; 
 
   // source files for DVD content 
   string inFile1 = Path.Combine(LEAD_VARS.MediaDir, "DVDWriter_Source1.avi"); 
   string inFile2 = Path.Combine(LEAD_VARS.MediaDir, "DVDWriter_Source2.avi"); 
   string inFile3 = Path.Combine(LEAD_VARS.MediaDir, "DVDWriter_Source3.avi"); 
   string inFile4 = Path.Combine(LEAD_VARS.MediaDir, "DVDWriter_Source4.avi"); 
   string backgroundImageFile = Path.Combine(LEAD_VARS.MediaDir, "DVDWriter_Background.jpg"); 
   string outFile = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_DvdWriterExample_DVD"); 
 
   try 
   { 
      _dvdWriter = null; 
 
      _convertCtrl.Preview = true; 
      _convertCtrl.PreviewVisible = true; 
 
      // setup the converter 
      _convertCtrl.TargetFormat = TargetFormatType.DVD; 
      _convertCtrl.VideoCompressors.Mpeg2.Selected = true; 
      _convertCtrl.AudioCompressors.MpegAudio.Selected = true; 
 
      // Create a DVD image with 2 titles, each contains 2 chapters:  
      // Source video 
      _convertCtrl.SourceFile = inFile1; 
 
      // Destination image folder 
      _convertCtrl.TargetFile = outFile; 
 
      // Retrieve the DVD Writer interface  
      _dvdWriter = _convertCtrl.GetSubObject(ConvertObject.Sink) as LTDvdWriter; 
 
      _dvdWriter.RemoveAllMenuTitles(); 
      _dvdWriter.MenulessTitlePlay = false; 
 
      // Set the TitleBreak property to false.  
      // This will prevent the title from being written immediately after the conversion 
      _dvdWriter.TitleBreak = false; 
 
      _dvdWriter.AddMenuTitle("Title 1", -1); 
 
      // Write the first chapter in the first title 
      _convertCtrl.StartConvert(); 
 
      while (_convertCtrl.State != ConvertState.Stopped) 
         Application.DoEvents(); 
 
      _convertCtrl.ResetSource(); 
 
      int highPart = 0; 
      int lowPart = _dvdWriter.GetBytesWritten(out highPart); 
      Int64 written = highPart << 32 | lowPart; 
 
      _convertCtrl.SourceFile = inFile2; 
      _convertCtrl.StartConvert(); 
 
      while (_convertCtrl.State != ConvertState.Stopped) 
         Application.DoEvents(); 
 
      _convertCtrl.ResetSource(); 
 
      // Prepare for the second title 
      // Set the TitleBreak property to TRUE, so the the current title can be flushed 
      _dvdWriter.TitleBreak = true; 
 
      // Disable Overwrite so the title will be appended to an existing dvd image 
      _dvdWriter.Overwrite = false; 
      _dvdWriter.MenulessTitlePlay = false; 
 
      // Set the TitleBreak property to FALSE.  
      // This will prevent the title from being written immediately after the conversion 
      _dvdWriter.TitleBreak = false; 
      _dvdWriter.AddMenuTitle("Title 2", -1); 
 
      // Write the first chapter in the second title 
      _convertCtrl.SourceFile = inFile3; 
      _convertCtrl.StartConvert(); 
 
      while (_convertCtrl.State != ConvertState.Stopped) 
         Application.DoEvents(); 
 
      _convertCtrl.ResetSource(); 
 
      // Write the second chapter in the second title 
      _convertCtrl.SourceFile = inFile4; 
      _convertCtrl.StartConvert(); 
 
      while (_convertCtrl.State != ConvertState.Stopped) 
         Application.DoEvents(); 
 
      _convertCtrl.ResetSource(); 
 
      // Close the second title 
      _dvdWriter.TitleBreak = true; 
 
      _dvdWriter.TitleMenu = true; 
      _dvdWriter.MenuLoop = true; 
      _dvdWriter.MenulessTitlePlay = false; 
 
      // Write the second chapter in the second title 
      _convertCtrl.SourceFile = backgroundImageFile; 
      ChangeStillImageDuration(1.0); 
 
      _convertCtrl.StartConvert(); 
 
      while (_convertCtrl.State != ConvertState.Stopped) 
         Application.DoEvents(); 
 
      _convertCtrl.ResetSource(); 
 
      _dvdWriter.TitleMenu = false; 
      _dvdWriter.Overwrite = false; 
 
      _convertCtrl.ResetTarget(); 
      _convertCtrl.ResetSource(); 
 
      // done, free COM object 
      Marshal.ReleaseComObject(_dvdWriter); 
      _dvdWriter = null; 
 
      // set the result  
      _result = true; 
   } 
   catch (Exception ex) 
   { 
      _result = false; 
   } 
} 
 
private void ChangeStillImageDuration(double duration) 
{ 
   ILTStlImgRd pStlImgRd; 
 
   try 
   { 
      pStlImgRd = _convertCtrl.GetSubObject(ConvertObject.SourceFilter) as ILTStlImgRd; 
      if (pStlImgRd != null) 
      { 
         // get the current menu duration 
         double currentDuration; 
         currentDuration = _convertCtrl.Duration; 
 
         if (currentDuration * 2 <= duration) 
            pStlImgRd.Loop = (int)(duration / currentDuration + 0.5); 
      } 
   } 
   catch 
   { 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 19\Media"; 
}