请教wince6.0wifi连接- 怎么删除wifi首选网络

//////////////////////////////////////////////////////////////////////////// adding to the [Preferred Networks]// [Preferred Networks] is a list of SSIDs in preference order.// WZC continuously scans available SSIDs and attempt to connect to the most preferable SSID.void AddToPreferredNetworkList(LPTSTR pszWiFiCard, PWZC_WLAN_CONFIG pwzcConfig, LPTSTR pszSSID){    DWORD dwOutFlags = 0;    INTF_ENTRY_EX Intf;    DWORD dwStatus;    WZC_802_11_CONFIG_LIST *pConfigList;    WZC_802_11_CONFIG_LIST *pNewConfigList;    DWORD dwDataLen;    ULONG uiNumberOfItems;    UINT i;    memset(&Intf, 0x00, sizeof(INTF_ENTRY_EX));    Intf.wszGuid = pszWiFiCard;    dwStatus = WZCQueryInterfaceEx(        NULL,         INTF_ALL,        &Intf,         &dwOutFlags);    if(dwStatus)    {        //DEBUGMSG(ZONE_ERROR, (TEXT("Ethman: AddToPreferredNetworkList: WZCQueryInterfaceEx() error dwStatus=0x%0X, dwOutFlags=0x%0X\r\n"), dwStatus, dwOutFlags));        WZCDeleteIntfObjEx(&Intf);        return;    }    pConfigList = (PWZC_802_11_CONFIG_LIST)Intf.rdStSSIDList.pData;        if(!pConfigList)   // empty [Preferred Networks] list case    {        dwDataLen = sizeof(WZC_802_11_CONFIG_LIST);        pNewConfigList = (WZC_802_11_CONFIG_LIST *)LocalAlloc(LPTR, dwDataLen);        pNewConfigList->NumberOfItems = 1;        pNewConfigList->Index = 0;        memcpy(pNewConfigList->Config, pwzcConfig, sizeof(WZC_WLAN_CONFIG));        Intf.rdStSSIDList.pData = (BYTE*)pNewConfigList;        Intf.rdStSSIDList.dwDataLen = dwDataLen;    }    else    {        uiNumberOfItems = pConfigList->NumberOfItems;        for(i=0; i<uiNumberOfItems; i++)        {            if(memcmp(&(pwzcConfig->Ssid), &pConfigList->Config[i].Ssid, sizeof(NDIS_802_11_SSID)) == 0)            {                //DEBUGMSG(ZONE_VERBOSE, (TEXT("Ethman: AddToPreferredNetworkList: The SSID [%s] in registry is already in the [Preferred Networks] list.\r\n"), pszSSID));                WZCDeleteIntfObjEx(&Intf);                return;            }        }        //DEBUGMSG(ZONE_VERBOSE, (TEXT("Ethman: AddToPreferredNetworkList: SSID List has [%d] entries.\r\n"), uiNumberOfItems));        //DEBUGMSG(ZONE_VERBOSE, (TEXT("Ethman: AddToPreferredNetworkList: Adding %s to the top of [Preferred Networks]\r\n"), pszSSID)); // this will be the most preferable SSID        dwDataLen = sizeof(WZC_802_11_CONFIG_LIST) + (uiNumberOfItems+1)*sizeof(WZC_WLAN_CONFIG);        pNewConfigList = (WZC_802_11_CONFIG_LIST *)LocalAlloc(LPTR, dwDataLen);        pNewConfigList->NumberOfItems = uiNumberOfItems + 1;        pNewConfigList->Index = 0;        memcpy(pNewConfigList->Config, pwzcConfig, sizeof(WZC_WLAN_CONFIG));        if(pConfigList->NumberOfItems)        {            pNewConfigList->Index = pConfigList->Index;            memcpy(pNewConfigList->Config+1, pConfigList->Config, (uiNumberOfItems)*sizeof(WZC_WLAN_CONFIG));            LocalFree(pConfigList);            pConfigList = NULL;        }        Intf.rdStSSIDList.pData = (BYTE*)pNewConfigList;        Intf.rdStSSIDList.dwDataLen = dwDataLen;    }    dwStatus = WZCSetInterfaceEx(NULL, INTF_PREFLIST, &Intf, &dwOutFlags);    //if(dwStatus)    //    DEBUGMSG(ZONE_VERBOSE, (TEXT("Ethman: AddToPreferredNetworkList: WZCSetInterfaceEx() error dwStatus=0x%0X, dwOutFlags=0x%0X\r\n"), dwStatus, dwOutFlags));    WZCDeleteIntfObjEx(&Intf);}