Returns one of the following values:

The IActiveScript::Clone method is an optimization of IPersist*::Save, CoCreateInstance, and IPersist*::Load, so the state of the new scripting engine should be the same as if the state of the original scripting engine were saved and loaded into a new scripting engine. Named items are duplicated in the cloned scripting engine, but specific object pointers for each item are forgotten and are obtained with the IActiveScriptSite::GetItemInfo method. This allows an identical object model with per-thread entry points (an apartment model) to be used.

This method is used for multithreaded server hosts that can run multiple instances of the same script. The scripting engine may return E_NOTIMPL, in which case the host can achieve the same result by duplicating the persistent state and creating a new instance of the scripting engine with an IPersist* interface.

This method can be called from non-base threads without resulting in a non-base callout to host objects or to the IActiveScriptSite interface.

Concepts