NULLPROP.H

//==========================================================================; 
// 
//  THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY 
//  KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE 
//  IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR 
//  PURPOSE. 
// 
//  Copyright (c) 1992 - 1997  Microsoft Corporation.  All Rights Reserved. 
// 
//--------------------------------------------------------------------------; 
//---------------------------------------------------------------------------- 
// nullprop.h 
//---------------------------------------------------------------------------- 
 
class NullIPProperties : public CBasePropertyPage 
{ 
 
public: 
 
    static CUnknown * WINAPI CreateInstance(LPUNKNOWN lpunk, HRESULT *phr); 
    DECLARE_IUNKNOWN; 
 
private: 
 
    BOOL OnReceiveMessage(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam); 
    HRESULT OnConnect(IUnknown *pUnknown); 
    HRESULT OnDisconnect(); 
    HRESULT OnActivate(); 
    HRESULT OnApplyChanges(); 
 
    void SetDirty(); 
    void FillListBox(); 
 
    NullIPProperties(LPUNKNOWN lpunk, HRESULT *phr); 
 
    HWND        m_hwndLB ;       // Handle of the list box 
    int         m_nIndex ;       // Index of the selected media type 
    IPin        *m_pPin ;        // The upstream output pin connected to us 
    INullIPP    *m_pINullIPP;    // Null In Place property interface 
 
};  // class NullIPProperties