Geoff Chappell - Software Analyst
The IBrowserWithTabWindows methods are (as ordered in the virtual function table after the IUnknown methods):
HRESULT GetTabWindow (ITabWindow **);
HRESULT SetTabWindow (ITabWindow *);
in which ITabWindow is an undocumented interface.
The IBrowserWithTabWindows interface is implemented in IEFRAME version 7.0 and higher.
This interface is not documented by Microsoft as late as the January 2007 edition of the Software Development Kit (SDK) for Windows Vista.