XP蓝牙搜索程序无效

[nonono1111]

按照bluetooth essentials for programmers这本书编写的windows XP上面的寻找蓝牙的程序，从网上下了一个差不多的，但是总是在WSALookupServicebegin()这个函数这出错，返回-1，不知道是哪里出错了，哪位大牛能给点指导！

void CMy3Dlg::OnBnClickedButton3()
{
	// TODO: 在此添加控件通知处理程序代码
	// TODO: Add your control notification handler code here

	
		WSADATA wsaData;
		DWORD dwResult;
		HANDLE hLookup = 0;
		WSAQUERYSET lpRestrictions;
		GUID guid = SVCID_HOSTNAME;
		dwResult = WSAStartup(MAKEWORD(2,2), &wsaData);

		if (dwResult != 0)
		{
			printf("Cannot startup Winsock, error code %d\n", dwResult);
			exit(1);
		}
		else
			printf("WSAStartup is OK!\n");

		ZeroMemory(&lpRestrictions, sizeof(WSAQUERYSET));
		lpRestrictions.dwSize = sizeof(WSAQUERYSET);
		lpRestrictions.lpServiceClassId = &guid;

		dwResult = WSALookupServiceBegin(&lpRestrictions, LUP_RETURN_NAME, &hLookup);
		if (dwResult != SOCKET_ERROR)
		{
			DWORD dwLength = 0;
			WSAQUERYSET * pqs = NULL;

			printf("WSALookupServiceBegin() is OK!\r\n");

			pqs = (WSAQUERYSET *) malloc(sizeof(WSAQUERYSET) + 100);
			dwLength = sizeof(WSAQUERYSET) + 100;

			do
			{
				if (WSALookupServiceNext(hLookup, 0, &dwLength, pqs) != 0)
				{
					dwResult = WSAGetLastError();
					if((dwResult == WSA_E_NO_MORE) || (dwResult == WSAENOMORE))
					{
						printf("No more record found!\n");
						break;
					}
					printf("WSALookupServiceNext() failed with error code %d\n", WSAGetLastError());
				}
				else
				{
					dwResult = 0;
					printf("WSALookupServiceNext() looks fine!\r\n");
				}

				if (dwResult == WSAEFAULT)
				{
					if (pqs)
					{
						printf("Freeing pqs...\r\n");
						free(pqs);
					}

					// Reallocate

					pqs = (WSAQUERYSET *) malloc(dwLength);
					if (!pqs)
					{
						printf("Could not allocate memory: %d\n", GetLastError());
						exit(2);

					}
					else
					{
						printf("Memory allocated for pqs successfully!\r\n");
						continue;
					}
				}

				// Output it since we have it now
				if ((dwResult == 0) && (pqs))
				{
					printf("  Service instance name: %S\n", pqs->lpszServiceInstanceName);
					printf("  Name space num: %d\r\n", pqs->dwNameSpace);
					printf("  Num of protocols: %d\r\n", pqs->dwNumberOfProtocols);
					//printf("  Version: %d\r\n", pqs->lpVersion->dwVersion);
				}
			} while ((dwResult != WSA_E_NO_MORE) && (dwResult != WSAENOMORE));

			// clean-up

			free(pqs);
			if(WSALookupServiceEnd(hLookup) == 0){
				printf("hLookup handle was released!\n");
			}
			else{
				printf("WSALookupServiceEnd(hLookup) failed with error code %d\n", WSAGetLastError());
			}

		}
		else
		{
			printf("Error on WSALookupServiceBegin: %d\n", WSAGetLastError());
			exit(3);
		}

		if(WSACleanup() == 0){
			printf("WSACleanup() is OK!\n");
		}
		else{
			printf("WSACleanup() failed with error code %d\n", WSAGetLastError());
		}

		printf("按回车键退出!\n");
		char c = getchar();
		
	}