| VCL Object and Component | .NET |
| IInterface | System.Object |
| IInvokable | System.Object |
| IUnknown | System.Object |
| PGUID | System.Guid |
| TAggregatedObject | System.Object |
| TClass | System.Type |
| TContainedObject | System.Object |
| TDateTime | System.DateTime |
| TGUID | System.Guid |
| TInterfacedObject | System.Object |
| TObject | System.Object |