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This method provides an IUnknownpointer to the object associated with the property page.


virtual HRESULT OnConnect(



Pointer to the IUnknowninterface of the object.

Return Value

The base-class implementation returns S_OK.


The CBasePropertyPage::SetObjectsmethod calls the CBasePropertyPage::OnConnectmethod. Override this method to store a pointer to the object specified by pUnknown. You can either store the pUnknownpointer itself, or query that pointer for other interfaces. If you store the pUnknownpointer, call IUnknown::AddRefbefore CBasePropertyPage::OnConnectreturns.

In the CBasePropertyPage::OnActivatemethod, use the stored pointer (or pointers) to retrieve initial values for the dialog properties. In the CBasePropertyPage::OnApplyChangesmethod, apply any changes back to the object. Release all pointers in the CBasePropertyPage::OnDisconnectmethod.


Windows Embedded CE Windows CE 2.12 and later
Windows Mobile Windows Mobile Version 5.0 and later
Note Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements
For more information, see Setting Up the Build Environment,
Version 2.12 requires DXPAK 1.0 or later

See Also