应该采用RFCOMM虚拟串口方式来进行通信，原理跟socket通信类似，不同的是使用的通信协议不同，本人结合相关的API，做了以下最简单的封装。

1、获取本地蓝牙设备与附近蓝牙设备信息

2、通信类

/*
通信类：只是对于客户端通信
Initialize
Create
Connect
Send
Receive
Close
Finalize
*/

class  BlueToothSimple
{
public:
    bool Initialize();

    bool Create();

    bool Connect(const char* straddr, const char* guid = "0000fd2d-0000-1000-8000-00805f9b34fb");

    bool Send(const char* msgToServer);

    // 返回字符串
    string Receive();

    // 返回特殊的数据,针对于\r\n 划分开的字符串
    vector<CString> ReceiveEx();

    bool Close();

    void Finalize();

protected:

    int error;

    SOCKET btSocket;
};

3、支持服务器客户端蓝牙虚拟通信接口

class BlueToothSocket
{

public:

    BlueToothSocket();

    ~BlueToothSocket();

    BOOL StartSearchBthDev(IN DWORD dwControlFlags);

    BOOL GetNextBthDev(
        IN OUT BTHDEV_INFO *pcBthDevInfo,
        IN DWORD dwControlFlags = LUP_RETURN_NAME | LUP_RETURN_ADDR | LUP_FLUSHCACHE
        );

    BOOL EndSearchBthDev();

    bool Initialize();

    void Finalize();

    BOOL Create(int af = AF_BTH, int type = SOCK_STREAM, int protocol = BTHPROTO_RFCOMM);

    BOOL Close();

    int Bind(BTH_ADDR sktAddr = 0, ULONG port = BT_PORT_ANY);

    int Listen(IN int backlog);

    int GetSockName(BTH_ADDR *psktAddr, ULONG *port);

    int SetBthService(TCHAR *lpServiceName);

    int Accept(BlueToothSocket *pcBth);

    int GetBTHAddr(const char* straddr, BTH_ADDR* btaddr);

    int Connect(BTH_ADDR sktAddr, ULONG port, int nMSecond = -1);

    int Send(LPVOID lpData, int len, int flags = 0);

    int Recv(LPVOID lpData, int len, int flags = 0);

    int SendAll(LPVOID lpData, int len, int flags = 0);

    int RecvAll(LPVOID lpData, int len, int flags = 0);

private:

    void HexMac2String(BTH_ADDR dw64Addr, TCHAR *pstrMac);
};

资源下载地址：https://download.csdn.net/download/u011269801/89296309?spm=1001.2014.3001.5503