Gets a value that indicates whether the object is a top-level container.
HRESULT IWebBrowser2::get_TopLevelContainer(VARIANT_BOOL *pBool);
Pointer to a variable of type VARIANT_BOOL that receives one of the values listed in Possible Values.
VARIANT_FALSE Object is not a top-level container. VARIANT_TRUE Object is a top-level container.
Returns S_OK to indicate that the operation was successful.