IBrowserApplicationState

This interface is implemented in IEFRAME and seems new to Windows Vista. Closer inspection may reveal it or something similar in some other module in an earlier Windows version. The IID is:

{A9EEC745-B92E-4F50-BA80-721072208C67}

This interface is not completely undocumented. It doesn’t get even a declaration in any Windows SDK header, but the corresponding IID_IBrowserApplicationState is defined in the UUID.LIB library.

Methods

The IBrowserApplicationState methods are:

Offset	Method
0x0C	GetFrameFromHWND
0x10	GetFrameFromThreadID
0x14	GetFrameFromBrowserHWND
0x18	GetFrameFromBrowserThreadID
0x1C	QueryDialogsAllowed
0x20	QueueDialog
0x24	RemoveDialog
0x28	AssociateThread
0x2C	DisassociateThread
0x30	FindParentHWND

Prototypes

The following are known from Microsoft’s symbol file for IEFRAME:

HRESULT GetFrameFromHWND (HWND, IBrowserFrameState **);

HRESULT GetFrameFromThreadID (ULONG, IBrowserFrameState **);

HRESULT GetFrameFromBrowserHWND (HWND, IBrowserFrameState **);

HRESULT GetFrameFromBrowserThreadID (ULONG, IBrowserFrameState **);

HRESULT QueryDialogsAllowed (HWND, ULONG);

HRESULT QueueDialog (HWND, HWND, ULONG);

HRESULT RemoveDialog (HWND, ULONG);

HRESULT AssociateThread (ULONG, ULONG);

HRESULT DisassociateThread (ULONG);

HRESULT FindParentHWND (ULONG, HWND *);

Of course, the IBrowserFrameState interface produced by several of these methods is undocumented also.

Implementations

The only known implementation is by the BrowserApplicationState class, which IEFRAME exposes through its DllGetClassObject function as if for the following IDL declaration:

[
    uuid (E569BDE7-A8DC-47F3-893F-FD2B31B3EEFD)
]
coclass BrowserApplicationState
{
    [default] interface IBrowserApplicationState;
};

This too is undocumented, though the CLSID_BrowserApplicationState symbol is defined in the UUID.LIB library. The only known use is from MSHTML.