//
//  Windows Server (Printing) Driver Development Kit Samples.
//
//  Sample Print Provider template.
//
//  Copyright (c) 1990 - 2005 Microsoft Corporation.
//  All Rights Reserved.
//
//
//  This source code is intended only as a supplement to Microsoft
//  Development Tools and/or on-line documentation.  See these other
//  materials for detailed information regarding Microsoft code samples.
//
//  THIS CODE AND INFORMATION ARE 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.
//

#ifndef __ACALLBACK_HPP__
#define __ACALLBACK_HPP__

//
// CPrintOEMAsyncNotifyCallback implements callback interface required
// to receive notifications.
//
class CPrintOEMAsyncNotifyCallback : public IPrintAsyncNotifyCallback
{
public:

    //
    // Default Constructor
    //
    CPrintOEMAsyncNotifyCallback(
        HANDLE      unregisterEvent
        );

    //
    // Validates object state
    //
    HRESULT
    IsValid(
        VOID
        ) const;

    //
    // IUnknown methods
    //
    STDMETHODIMP
    QueryInterface(
        _In_  REFIID  riid,
        _Out_ VOID**  ppv
        );

    STDMETHODIMP_(ULONG)
    AddRef(
        VOID
        );

    STDMETHODIMP_(ULONG)
    Release(
        VOID
        );

    //
    // IAsyncNotifications methods
    //
    STDMETHODIMP
    OnEventNotify(
        _In_opt_ IPrintAsyncNotifyChannel*       pIAsyncNotification,
        _In_     IPrintAsyncNotifyDataObject*    pNotification
        );

    STDMETHODIMP
    ChannelClosed(
        _In_opt_ IPrintAsyncNotifyChannel*       pIAsyncNotification,
        _In_     IPrintAsyncNotifyDataObject*    pNotification
        );

private:

    ~CPrintOEMAsyncNotifyCallback(
        );

    HRESULT
    ReplyOnEventNotify(
        _In_ IPrintAsyncNotifyChannel*
        );

    void
    CPrintOEMAsyncNotifyCallback::
    MarshalSchema(
        _In_ EOEMDataSchema const &in,
        _Out_ BYTE (&out)[4]
        );

    EOEMDataSchema
    CPrintOEMAsyncNotifyCallback::
    UnmarshalSchema(
        _In_reads_(4) BYTE* pData
        );

    HANDLE                        m_unregisterEvent;
    HRESULT                       m_hValid;
    LONG                          m_cRef;
};



#endif //__ACALLBACK_HPP__