实例介绍
【实例简介】BlueToothTest
【实例截图】
【实例截图】
【核心代码】
#include "StdAfx.h"
#include <ws2bth.h>
#include "BlueTooth.h"
#pragma comment(lib,"Irprops.lib")
CBlueTooth::CBlueTooth()
{
}
CBlueTooth::~CBlueTooth()
{
RemoveAllLocalDev();
RemoveAllRemoteDev();
}
/******************************************************************************\
用 Socket 函数搜索附近的蓝牙设备，成功时返回设备数，否则返回-1
\******************************************************************************/
int CBlueTooth::ScanBySocket()
{
RemoveAllRemoteDev();
WSAQUERYSET wsaq;
HANDLE hLookup = NULL;
union
{
CHAR buf[5000];
double __unused; // ensure proper alignment
};
LPWSAQUERYSET pwsaResults = (LPWSAQUERYSET) buf;
DWORD dwSize = sizeof(buf);
memset(&wsaq,0,sizeof(wsaq));
wsaq.dwSize = sizeof(wsaq);
wsaq.dwNameSpace = NS_BTH;
wsaq.lpcsaBuffer = NULL;
if (ERROR_SUCCESS != WSALookupServiceBegin (&wsaq, LUP_CONTAINERS, &hLookup))
{
return -1;
}
ZeroMemory(pwsaResults, sizeof(WSAQUERYSET));
pwsaResults->dwSize = sizeof(WSAQUERYSET);
pwsaResults->dwNameSpace = NS_BTH;
pwsaResults->lpBlob = NULL;
while (ERROR_SUCCESS == WSALookupServiceNext (hLookup, LUP_RETURN_NAME | LUP_RETURN_ADDR, &dwSize, pwsaResults))
{
ASSERT (pwsaResults->dwNumberOfCsAddrs == 1);
RemoteDev dev;
dev.Address = ((SOCKADDR_BTH *)pwsaResults->lpcsaBuffer->RemoteAddr.lpSockaddr)->btAddr;
dev.sName = pwsaResults->lpszServiceInstanceName;
m_arrRemote.Add(dev);
}
WSALookupServiceEnd(hLookup);
return (int)m_arrRemote.GetSize();
}
//
// 用蓝牙 APIs 搜索附近的蓝牙设备，成功时返回设备数，否则返回-1
//
int CBlueTooth::Scan(HANDLE hRadio,BOOL fReturnAuthenticated,BOOL fReturnRemembered,BOOL fReturnUnknown
,BOOL fReturnConnected,BOOL fIssueInquiry,UCHAR cTimeoutMultiplier)
{
RemoveAllRemoteDev();
BLUETOOTH_DEVICE_INFO bdi = { sizeof(BLUETOOTH_DEVICE_INFO) };
BLUETOOTH_DEVICE_SEARCH_PARAMS bdsp;
ZeroMemory(&bdsp, sizeof(BLUETOOTH_DEVICE_SEARCH_PARAMS));
bdsp.dwSize = sizeof(BLUETOOTH_DEVICE_SEARCH_PARAMS);
bdsp.hRadio = hRadio;
bdsp.fReturnAuthenticated = fReturnAuthenticated;
bdsp.fReturnRemembered = fReturnRemembered;
bdsp.fReturnUnknown = fReturnUnknown;
bdsp.fReturnConnected = fReturnConnected;
bdsp.fIssueInquiry = fIssueInquiry;
bdsp.cTimeoutMultiplier = cTimeoutMultiplier;
HBLUETOOTH_DEVICE_FIND hbf = BluetoothFindFirstDevice(&bdsp, &bdi);
if(hbf == NULL)
{
return -1;
}
do
{
TRACE ( _T("%s ( %s )\n"), bdi.szName, AddrToStr(bdi.Address.rgBytes) );
RemoteDev dev;
dev.Address = bdi.Address.ullLong;
dev.sName = bdi.szName;
m_arrRemote.Add(dev);
}while(BluetoothFindNextDevice(hbf,&bdi));
BluetoothFindDeviceClose(hbf);
return m_arrRemote.GetSize();
}
//
// 用向导手工搜索附近的蓝牙设备并建立连接，得到设备的详细信息，成功时返回设备数
//
int CBlueTooth::ScanWithWnd(HWND hwndParent
,HANDLE hRadio
,LPWSTR pszInfo
,BOOL fForceAuthentication
,BOOL fShowAuthenticated
,BOOL fShowRemembered
,BOOL fShowUnknown
,BOOL fAddNewDeviceWizard
,BOOL fSkipServicesPage
,PFN_DEVICE_CALLBACK pfnDeviceCallback
,LPVOID pvParam)
{
RemoveAllRemoteDev ();
BLUETOOTH_SELECT_DEVICE_PARAMS bsdp = { sizeof(bsdp) };
bsdp.hwndParent = hwndParent;
bsdp.pszInfo = pszInfo;
bsdp.fForceAuthentication = fForceAuthentication;
bsdp.fShowAuthenticated = fShowAuthenticated;
bsdp.fShowRemembered = fShowRemembered;
bsdp.fShowUnknown = fShowUnknown;
bsdp.fAddNewDeviceWizard = fAddNewDeviceWizard;
bsdp.fSkipServicesPage = fSkipServicesPage;
bsdp.pfnDeviceCallback = pfnDeviceCallback;
bsdp.pvParam = pvParam;
if(BluetoothSelectDevices(&bsdp))
{
BLUETOOTH_DEVICE_INFO *bdi = bsdp.pDevices;
for(ULONG cDevice = 0;cDevice < bsdp.cNumDevices;cDevice )
{
//if(bdi->fAuthenticated || bdi->fRemembered)
{
RemoteDev dev;
dev.Address = bdi->Address.ullLong;
dev.sName = bdi->szName;
m_arrRemote.Add(dev);
}
bdi = (BLUETOOTH_DEVICE_INFO*)((LPBYTE)bdi bdi->dwSize);
}
BluetoothSelectDevicesFree( &bsdp );
}
return (int)m_arrRemote.GetSize();
}
/******************************************************************************\
获取字符串形式的蓝牙地址
蓝牙地址 BLUETOOTH_ADDRESS 定义如下
union
{
BTH_ADDR ullLong;
BYTE rgBytes[6];
};
BTH_ADDR 是一个 64 位的整数
假定蓝牙地址为 12:34:56:78:9A:BC 则 ullLong 为 0x0000123456789ABC
rgBytes 的内容为 BC 9A 78 56 34 12
\******************************************************************************/
CString CBlueTooth::AddrToStr(const void*pAddr)
{
CString sAddress;
if(pAddr)
{
BLUETOOTH_ADDRESS Address;
int nBytes = sizeof(Address.rgBytes);
TCHAR szByte[8];
const BYTE* pByte = (const BYTE*)pAddr (nBytes - 1);
for(int i = 0;i < nBytes;i )
{
_stprintf_s(szByte,_T(":%02x"),*pByte--);
sAddress = i ? szByte : (szByte 1);
}
}
return sAddress;
}
/******************************************************************************\
枚举本地所有蓝牙设备到 m_arrLocal，返回本地蓝牙设备数
\******************************************************************************/
int CBlueTooth::EnumLocalDev()
{
RemoveAllLocalDev();
HANDLE hRadio = NULL;
BLUETOOTH_FIND_RADIO_PARAMS bfrp = {sizeof(bfrp)};
HBLUETOOTH_RADIO_FIND hFind = BluetoothFindFirstRadio(&bfrp,&hRadio);
if(hFind)
{
do{
if(hRadio)
{
m_arrLocal.Add(hRadio);
}
}while(BluetoothFindNextRadio(hFind,&hRadio));
BluetoothFindRadioClose(hFind);
}
return (int)m_arrLocal.GetSize();
}
/******************************************************************************\
删除 m_arrLocal 内的所有本地蓝牙设备
\******************************************************************************/
void CBlueTooth::RemoveAllLocalDev()
{
for(int i = m_arrLocal.GetUpperBound();i >= 0;--i)
{
const HANDLE&hRadio = m_arrLocal[i];
if(hRadio)
{
CloseHandle(hRadio);
}
}
m_arrLocal.RemoveAll();
}
/******************************************************************************\
删除 m_arrRemote 内的所有远程蓝牙设备
\******************************************************************************/
void CBlueTooth::RemoveAllRemoteDev()
{
m_arrRemote.RemoveAll();
}
int CBlueTooth::Connect(BTH_ADDR sktAddr, ULONG port, int nMSecond/* = -1*/)
{
SOCKADDR_BTH sa = { 0 };
sa.addressFamily = AF_BTH;
sa.btAddr = sktAddr;
sa.port = port;
if (nMSecond == -1)
{
return connect(m_hSocket, (LPSOCKADDR)&sa, sizeof(SOCKADDR_BTH));
}
ULONG non_blocking = 1;
ULONG blocking = 0;
int nResult = ioctlsocket(m_hSocket, FIONBIO, &non_blocking);
if (nResult == SOCKET_ERROR)
{
return nResult;
}
nResult = SOCKET_ERROR;
if (connect(m_hSocket, (LPSOCKADDR)&sa, sizeof(SOCKADDR_BTH)) == SOCKET_ERROR)
{
struct timeval tv;
fd_set writefds;
// 设置连接超时时间
tv.tv_sec = nMSecond / 1000; // 秒数
tv.tv_usec = nMSecond % 1000; // 毫秒
FD_ZERO(&writefds);
FD_SET(m_hSocket, &writefds);
nResult = select((int)m_hSocket 1, NULL, &writefds, NULL, &tv);
if (nResult > 0)
{
if (FD_ISSET(m_hSocket, &writefds))
{
int error = 0;
int len = sizeof(error);
//下面的一句一定要，主要针对防火墙
if (!(getsockopt(m_hSocket, SOL_SOCKET, SO_ERROR, (char *)&error, &len) != 0 || error != 0))
{
nResult = 0;
}
}
}
else if (nResult == 0)
{
nResult = -2;
}
}
if (ioctlsocket(m_hSocket, FIONBIO, &blocking) == SOCKET_ERROR)
{
nResult = SOCKET_ERROR;
}
return nResult;
}
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