setting CallBack in COM object

[Billy Greening]

Hi,

I have this audio converter com object I am trying to use. In order to get
the progress of the conversion it uses some converter.setCallBack function
that expects a 'obj lpProg'.

Their support has no knowledge apparently of .Net, so all they could give me
was sample code for VB script:

Function OnProgress(x,y)
z = (x * 100) / y
MsgBox(z)
OnProgress = true
conv.SetCallback addressOf OnProgress

So, I tried using a delegate, but cant seem to make that work. It gives my
'invalid cast' errors on the SetCallBack line.

public delegate void doProgress(object x, object y);

public void startConversion()
{
Converter conv = new ConverterClass();
doProgress myProgress = new doProgress(onProgress);
conv.SetCallback(myProgress);
conv.NamingScheme = outputfilename;
conv.ConvertFile(filename);
}
private void onProgress(object x, object y)
{
int z = (x*100)/y;
progressBar1.Value = z;
}

Any help would be greatly appreciated!!

Thanks,
Billy