53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
// 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) Microsoft Corporation. All rights reserved.
|
|
|
|
// This is the header for the declaration of our callback object
|
|
|
|
#pragma once
|
|
|
|
// Suppress warning that CComCritSecLock::Lock "Possibly failing to release lock"
|
|
#pragma warning(disable: 26165)
|
|
|
|
// Suppress warning that CComCritSecLock::Unlock "Possibly releasing unheld lock"
|
|
#pragma warning(disable: 26167)
|
|
|
|
#include <windows.h>
|
|
#include <atlbase.h>
|
|
#include <atlcom.h>
|
|
#include <LocationApi.h>
|
|
|
|
|
|
class CLocationEvents :
|
|
public CComObjectRoot,
|
|
public ILocationEvents // We must include this interface so the Location API knows how to talk to our object
|
|
{
|
|
public:
|
|
CLocationEvents() : m_previousTime(0) {}
|
|
virtual ~CLocationEvents(){}
|
|
|
|
DECLARE_NOT_AGGREGATABLE(CLocationEvents)
|
|
|
|
BEGIN_COM_MAP(CLocationEvents)
|
|
COM_INTERFACE_ENTRY(ILocationEvents)
|
|
END_COM_MAP()
|
|
|
|
// ILocationEvents
|
|
|
|
// This is called when there is a new location report
|
|
STDMETHOD(OnLocationChanged)(__RPC__in REFIID reportType, __RPC__in_opt ILocationReport* pLocationReport);
|
|
|
|
// This is called when the status of a report type changes.
|
|
// The LOCATION_REPORT_STATUS enumeration is defined in LocApi.h in the SDK
|
|
STDMETHOD(OnStatusChanged)(__RPC__in REFIID reportType, LOCATION_REPORT_STATUS status);
|
|
|
|
private:
|
|
// This is a private helper that allows us to print a GUID to the console in a friendly format
|
|
void CLocationEvents::PrintGUID(const GUID guid);
|
|
|
|
// We store the previous report timestamp here, and use this when computing the time between the current and previous report
|
|
ULONGLONG m_previousTime;
|
|
}; |