TnbCeBluetoothWatcher.h

[詳解]

#pragma once
#ifndef _WIN32_WCE
    #error TnbCeBluetoothWatcher.h is only supported on Windows CE platforms.
#endif // _WIN32_WCE
 
 
 
#include "TnbCeMsgQueueWatcher.h"
#include <bt_api.h>
 
 
 
//TNB Library
namespace TNB{
 
 
 
class CBluetoothWatcher
{
public:
 
    struct IListener
    {
        virtual ~IListener(void) {}
 
        virtual void OnBluetoothEvent(DWORD eventId, LPCVOID lpEventData) = 0;
    };
 
 
    //------------------------------------
 
 
    CBluetoothWatcher(void) : m_handle(NULL)
    {
    }
 
    ~CBluetoothWatcher(void)
    {
        Stop();
    }
 
    void SetListener(IListener* P)
    {
        m_inner.m_pListener = P ;
    }
 
    bool IsStarted(void) const
    {
        return m_handle != NULL;
    }
 
    bool Start(void)
    {
        Stop();
        m_queue.SetListener(&m_inner);
        if ( m_queue.Start(10, true, _T("CBluetoothWatcher")) )
        {
            DWORD f = BTE_CLASS_CONNECTIONS | BTE_CLASS_PAIRING | BTE_CLASS_DEVICE | BTE_CLASS_STACK | BTE_CLASS_AVDTP;
            m_handle = ::RequestBluetoothNotifications(f, m_queue.GetSafeHandle());
            if ( m_handle != NULL )
            {
                return true;
            }
        }
        Stop();
        return false;
    }
 
    void Stop(void)
    {
        if ( m_handle != NULL )
        {
            ::StopBluetoothNotifications(m_handle);
            m_handle = NULL;
        }
        m_queue.Stop();
    }
 
private:
    class CInner : public CMsgQueueWatcherT<BTEVENT>::IListener
    {
    public:
        CInner(void) : m_pListener(NULL)
        {
        }
        virtual void OnMsgQueueWatcherEvent(const BTEVENT& ev, size_t length, bool isAlert)
        {
            if ( m_pListener != NULL )
            {
                m_pListener->OnBluetoothEvent(ev.dwEventId, ev.baEventData);
            }
        }
        CBluetoothWatcher::IListener* m_pListener;
    };
    CInner                      m_inner;    
    CMsgQueueWatcherT<BTEVENT>  m_queue;    
    HANDLE                      m_handle;   
};
 
 
 
}; //TNB