Answer:
A dual interface allows its methods to be accessed as dispinterface methods or as vtable methods.
Dual interface is one that supports both - IDispatch interface and vtbl-based interface. Therefore, it might be used in scripting environment like VBScript and yet to use power and speed of vtbl-based interface for non-scripting environment.
Dual interface is one that supports both - IDispatch interface and vtbl-based interface. Therefore, it might be used in scripting environment like VBScript and yet to use power and speed of vtbl-based interface for non-scripting environment.
| Previous Question | Next Question |
| Explain shallow and deep copy? | Explain ActiveX and OLE? |