Signals and slots implementation in Delphi?

Question

Does an implementation of the signals and slots mechanism for event dispatching exist for Delphi?

Answer 1

Whilst you can implement multi-cast events yourself, they are not directly supported in the the language unlike in C# and VB.NET. Lack of language support makes any attempt to emulate multi-cast events rather clumsy.

Interestingly, C++ lacks support for signals and slots and the Qt solution involves an extra process in the compilation tool chain, the Meta Object Compiler.