Sample Code
Windows Driver Samples/ Async Notification Sample/ C++/ server/ library/ asyncnotify.cpp/
//
// Windows Server (Printing) Driver Development Kit Samples.
//
//
// 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.
//
#include "precomp.h"
#pragma hdrstop
_Analysis_mode_(_Analysis_code_type_user_driver_)
#include "acallback.hpp"
#include "notifydata.hpp"
//
// MarshalSchema is used to marshal an EOEMDataSchema enum value into a byte array
// in a platform-independent fashion (to avoid endianness and size issues on other platforms).
// This allows the client and server to run on independent architectures without issue.
// To marshal more complex data structures than a simple enum value, it is recommended that
// the RPC Serialization Services be used. See the MSDN documentation at:
// http://msdn2.microsoft.com/en-us/library/aa378670.aspx for details on their use.
//
void
MarshalSchema(
_In_ EOEMDataSchema const &in,
_Out_ BYTE (&out)[4]
)
{
out[0] = (BYTE)(in);
out[1] = (BYTE)(in >> 8);
out[2] = (BYTE)(in >> 16);
out[3] = (BYTE)(in >> 24);
}
VOID
SendAsyncNotification(
_In_ LPWSTR pPrinterName,
EOEMDataSchema action
)
{
IPrintAsyncNotifyChannel *pIAsynchNotification = NULL;
CPrintOEMAsyncNotifyCallback *pIAsynchCallback = new CPrintOEMAsyncNotifyCallback;
if (pIAsynchCallback)
{
RouterCreatePrintAsyncNotificationChannel(pPrinterName,
const_cast<GUID*>(&SAMPLE_NOTIFICATION_UI),
kPerUser,
kBiDirectional,
pIAsynchCallback,
&pIAsynchNotification);
pIAsynchCallback->Release();
}
if (pIAsynchNotification)
{
BYTE data[4] = { 0 };
MarshalSchema(action, data);
CPrintOEMAsyncNotifyDataObject *pClientNotification = new CPrintOEMAsyncNotifyDataObject(data,
sizeof(data),
const_cast<GUID*>(&SAMPLE_NOTIFICATION_UI));
if (pClientNotification)
{
pIAsynchNotification->SendNotification(pClientNotification);
pClientNotification->Release();
}
pIAsynchNotification->Release();
}
}
VOID
SendAsyncUINotification(
_In_ LPWSTR pPrinterName
)
{
WCHAR pszMsg[] = L"<?xml version=\"1.0\" ?>" \
L"<asyncPrintUIRequest xmlns=\"http://schemas.microsoft.com/2003/print/asyncui/v1/request\">" \
L"<v1><requestOpen><balloonUI><title>AsyncUI sample</title><body>This text is a sample.</body>" \
L"</balloonUI></requestOpen></v1></asyncPrintUIRequest>";
IPrintAsyncNotifyChannel *pIAsynchNotification = NULL;
CPrintOEMAsyncNotifyCallback *pIAsynchCallback = new CPrintOEMAsyncNotifyCallback;
if (pIAsynchCallback)
{
RouterCreatePrintAsyncNotificationChannel(pPrinterName,
const_cast<GUID*>(&MS_ASYNCNOTIFY_UI),
kPerUser,
kBiDirectional,
pIAsynchCallback,
&pIAsynchNotification);
pIAsynchCallback->Release();
}
if (pIAsynchNotification)
{
CPrintOEMAsyncNotifyDataObject *pClientNotification = new CPrintOEMAsyncNotifyDataObject(reinterpret_cast<BYTE*>(pszMsg),
sizeof(pszMsg),
const_cast<GUID*>(&MS_ASYNCNOTIFY_UI));
if (pClientNotification)
{
pIAsynchNotification->SendNotification(pClientNotification);
pClientNotification->Release();
}
pIAsynchNotification->Release();
}
}
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