|
|
问题：
蓝牙虚拟串口, 注册服务失败
void CBlueTestDlg::OnBnClickedButton1()
{
// 注册服务
PORTEMUPortParams pp ;
ZeroMemory(&pp, sizeof(pp));
pp.channel = RFCOMM_CHANNEL_MULTIPLE ;// the next available channel
pp.flocal = TRUE;
GetBA(_T("000b244ada77"), &pp.device);
int nIndex = 1;
HANDLE m_hDev = RegisterDevice(_T("COM"), nIndex, _T("btd.dll"), (DWORD)&pp);
//这里会返回错误, 错误代码为2404, 意思为" 设备正由活动进程使用，无法断开。"
CString sErr ;
sErr.Format(_T("Error %d,RegisterDevice!"), GetLastError()) ;
if (m_hDev == 0)
{
MessageBox(sErr, _T("ERROR")) ;
}
}
解决代码：
在注册之前,我先进行了查找,不知和这个有没有关系!
void BtFind(CListCtrl &list)
{
int iRet = 0 ;
WSAQUERYSET wsaq ;
HANDLE hLookup = 0 ;
HCURSOR hCurs;
hCurs = GetCursor() ;
SetCursor(LoadCursor(NULL, IDC_WAIT)) ;
ZeroMemory(&wsaq, sizeof(wsaq)) ;
wsaq.dwSize = sizeof(wsaq) ;
wsaq.dwNameSpace = NS_BTH ;
wsaq.lpcsaBuffer = NULL ;
iRet = WSALookupServiceBegin(&wsaq, LUP_CONTAINERS, &hLookup) ;
if(iRet != 0)
{
TCHAR tszErr[32] ;
iRet = WSAGetLastError() ;
StringCchPrintf(tszErr, 32, _T("Socket Err: %d"), iRet) ;
AfxMessageBox(tszErr) ;
}
LPWSAQUERYSET pwsaRet = 0;
CHAR buf[5000] ;
DWORD dwSize = 0 ;
for(;;)
{
pwsaRet = (LPWSAQUERYSET) buf ;
dwSize = sizeof(buf) ;
ZeroMemory(pwsaRet,sizeof(WSAQUERYSET)) ;
pwsaRet-> dwNameSpace = NS_BTH ;
pwsaRet-> lpBlob = NULL ;
iRet = WSALookupServiceNext(hLookup, LUP_RETURN_NAME ¦ LUP_RETURN_ADDR,
&dwSize, pwsaRet) ;
if(iRet != 0)
{
iRet = WSAGetLastError() ;
if(iRet != WSA_E_NO_MORE)
{
TCHAR tszErr[32] ;
iRet = WSAGetLastError() ;
StringCchPrintf(tszErr, 32, _T("Err: %d"), iRet) ;
AfxMessageBox(tszErr) ;
}
// finished
break ;
}
// add the name and address to the list
list.InsertItem(0, _T(""));
list.SetItem(0, 0, LVIF_TEXT, pwsaRet-> lpszServiceInstanceName, 0, 0, 0, 0 ) ;
BT_ADDR b = ((SOCKADDR_BTH *) pwsaRet-> lpcsaBuffer-> RemoteAddr.lpSockaddr)-> btAddr ;
ULONG channal = ((SOCKADDR_BTH *) pwsaRet-> lpcsaBuffer-> RemoteAddr.lpSockaddr)-> port ;
CString szItem ;
szItem.Format(_T("%x"), b) ;
list.SetItem(0, 1, LVIF_TEXT, szItem, 0, 0, 0, 0 ) ;
szItem.Format(_T("%d"), channal) ;
list.SetItem(0, 2, LVIF_TEXT, szItem, 0, 0, 0, 0 ) ;
}
WSALookupServiceEnd(hLookup) ;
SetCursor(hCurs) ;
}
/***********************************************************************
FUNCTION:GetBA
PROTOTYPE:int GetBA (WCHAR *pp, BT_ADDR *pba)
PURPOSE:Form the BDADDR in a way the PORTEMUPortParams structure understands.
***********************************************************************/
int GetBA (WCHAR *pp, BT_ADDR *pba)
{
// Bump pointer through any leading spaces
int i = 0 ;
while (*pp == ' ')
++pp;
for (i = 0 ; i < 4 ; ++i, ++pp)
{
if (!iswxdigit (*pp))
return(FALSE);
int c = *pp;
if (c > = 'a')
c = c - 'a' + 0xa;
else if (c > = 'A')
c = c - 'A' + 0xa;
else c = c - '0';
if ((c < 0) ¦ ¦ (c > 16))
return(FALSE);
*pba = *pba * 16 + c;
}
for (i = 0; i < 8 ; ++i, ++pp)
{
if (!iswxdigit (*pp))
return(FALSE);
int c = *pp;
if (c > = 'a')
c = c - 'a' + 0xa;
else if (c > = 'A')
c = c - 'A' + 0xa;
else c = c - '0';
if ((c < 0) ¦ ¦ (c > 16))
return(FALSE);
*pba = *pba * 16 + c;
}
if ((*pp != ' ') && (*pp != '\0'))
return(FALSE);
else
return(TRUE);
}
HANDLE RegisterCom(int channel, BT_ADDR ba, int n)
{
// 注册服务
PORTEMUPortParams pp;
memset (&pp, 0, sizeof(pp));
pp.flocal = TRUE;
pp.channel = channel & 0xff;
pp.device = ba ;
pp.uiportflags = RFCOMM_PORT_FLAGS_AUTHENTICATE ;
HANDLE hDev ;
hDev = RegisterDevice(_T("COM"),n,_T("btd.dll"),(DWORD)&pp);
if(hDev )
AfxMessageBox(_T("Register Success!")) ;
else
AfxMessageBox(_T("Register Fail!")) ;
return hDev ;
} |
|
|
|
|
|
| Windows Mobile | J2ME | 下载中心 | 游戏策划 | 招聘与求职 | 购书指南 | 视频教程
