Converting multicast C# event to Delphi

[VT Venkatesh]

How does one convert the following c# code to delphi
I know it is multicast .How ever i don't know the delphi syntax
Venkatesh
*************************************************
protected Catalog m_catalog;
// Build the catalog!
Spider cat = new Spider();
cat.SpiderProgressEvent += new SpiderProgressEventHandler
(OnProgressEvent);
m_catalog = cat.BuildCatalog (new Uri(Preferences.StartPage));
**************************************************

[Robert Giesecke]

VT Venkatesh wrote:
> How does one convert the following c# code to delphi
> I know it is multicast .How ever i don't know the delphi syntax
> Venkatesh

They are using the set syntax for this in D.Net
Include(someDelegate, anotherDelegate);

This is basically doing this:
someDelegate := YourDelegateType(Delegate.Combine(someDelegate, anotherDelegate));