CBasePropertyPage::OnConnect
A version of this page is also available for
4/8/2010
This method provides an IUnknown pointer to the object associated with the property page.
Syntax
virtual HRESULT OnConnect(
IUnknown* pUnknown
);
Parameters
- pUnknown
Pointer to the IUnknown interface of the object.
Return Value
The base-class implementation returns S_OK.
Remarks
The CBasePropertyPage::SetObjects method calls the CBasePropertyPage::OnConnect method. Override this method to store a pointer to the object specified by pUnknown. You can either store the pUnknown pointer itself, or query that pointer for other interfaces. If you store the pUnknown pointer, call IUnknown::AddRef before CBasePropertyPage::OnConnect returns.
In the CBasePropertyPage::OnActivate method, use the stored pointer (or pointers) to retrieve initial values for the dialog properties. In the CBasePropertyPage::OnApplyChanges method, apply any changes back to the object. Release all pointers in the CBasePropertyPage::OnDisconnect method.
Requirements
| 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 |