_IPresentationConverterEvents Interface

The _IPresentationConverterEvents interface is used for event handling during the conversion process.

Table 1. The following events are available for subscription:

Event	Event description
OnStartConversion(ConversionMode cm)	Occurs when the presentation conversion is started. In the HTML5 mode, the ConversionMode will always be CM_PRESENTATION_WITH_PLAYER.
OnStartCollectingData	Occurs when the presentation data collection is started.
OnStartProcessingData	Occurs when the presentation data processing is started.
OnSlideProgressChanged(int slideIndex, int totalSlides)	Occurs when the regular slide conversion is finished.
OnSlideItemProgressChanged	Occurs when the slide conversion progress is changed.
OnStartProcessingVideo	Occurs when video object processing is started.
OnVideoProgressChanged(double progress)	Occurs when video object processing progress is changed. Progress in the range of [0–1].
OnFinishProcessingVideo	Occurs when presentation data collection is finished.
OnFinishCollectingData	Occurs when the collecting data about presentation is finished.
OnFinishProcessingData	Occurs when the presentation data processing is finished.
OnFinishConversion	Occurs when the presentation conversion is finished.
OnIdle	Occurs constantly during the conversion process. This event can be used to update the user interface.
OnStartProcessingAudio	Occurs when audio clip processing is started.
OnAudioProgressChanged(double progress)	Occurs when audio clip processing progress is changed. Progress in the range of [0–1].
OnFinishProcessingAudio	Occurs when audio clip processing is finished.

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using iSpring;
using System.IO;
using System.Diagnostics;

namespace ispring_samples
{
    class Converter 
    {
        static void Main(string[] args)
        {
            var inFileInfo = new FileInfo(args[0]);
            var outFileInfo = new FileInfo(args[1]);
            var converter = new PresentationConverter();

            try
            {
                
                converter.OnStartConversion += new _IPresentationConverterEvents_OnStartConversionEventHandler(converter_OnStartConversion);
                converter.OnFinishConversion += new _IPresentationConverterEvents_OnFinishConversionEventHandler(converter_OnFinishConversion);

                converter.OpenPresentation(inFileInfo.FullName);
                converter.GenerateHtml5Presentation(outFileInfo.FullName, PresentationType.PT_SOLID, string.Empty, null);
                converter.Presentation.Close();
            }
            catch (Exception ex)
            {
                Console.Out.WriteLine("Error: " + ex.Message);
            }
            finally
            {
                Marshal.ReleaseComObject(converter);
            }
        }

        static void converter_OnFinishConversion()
        {
            Console.Out.WriteLine("Conversion finished");
        }

        static void converter_OnStartConversion(ConversionMode cm)
        {
            Console.Out.WriteLine("Conversion started");
        }
    }
}

C#