Window COM口枚举

VS2013实现的串口枚举，欢迎使用

void Serial::ListupSerialPort(LPWORD ComPortTable, int comports, char **ComPortDesc, int ComPortMax)
{
    GUID ClassGuid[];
    DWORD dwRequiredSize;
    BOOL bRet;
    HDEVINFO DeviceInfoSet = NULL;
    SP_DEVINFO_DATA DeviceInfoData;
    DWORD dwMemberIndex = ;
    int i;

    DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA);

    for (i = ; i < ComPortMax; i++)
    {
        free(ComPortDesc[i]);
        ComPortDesc[i] = NULL;
    }

    // Get ClassGuid from ClassName for PORTS class
    bRet = SetupDiClassGuidsFromName(_T("PORTS"), (LPGUID)& ClassGuid, , &dwRequiredSize);
    if (!bRet)
    {
        goto cleanup;
    }

    // Get class devices

    DeviceInfoSet = SetupDiGetClassDevs(&ClassGuid[], NULL, NULL, DIGCF_PRESENT | DIGCF_PROFILE);

    if (DeviceInfoSet)
    {
        // Enumerate devices
        dwMemberIndex = ;
        while (SetupDiEnumDeviceInfo(DeviceInfoSet, dwMemberIndex++, &DeviceInfoData))
        {
            TCHAR szFriendlyName[MAX_PATH];
            TCHAR szPortName[MAX_PATH];
            //TCHAR szMessage[MAX_PATH];
            DWORD dwReqSize = ;
            DWORD dwPropType;
            DWORD dwType = REG_SZ;
            HKEY hKey = NULL;

            // Get friendlyname
            bRet = SetupDiGetDeviceRegistryProperty(DeviceInfoSet, &DeviceInfoData, SPDRP_FRIENDLYNAME, &dwPropType, (LPBYTE)szFriendlyName, sizeof(szFriendlyName), &dwReqSize);

            // Open device parameters reg key
            hKey = SetupDiOpenDevRegKey(DeviceInfoSet, &DeviceInfoData, DICS_FLAG_GLOBAL, , DIREG_DEV, KEY_READ);
            if (hKey)
            {
                // Qurey for portname
                long lRet;
                dwReqSize = sizeof(szPortName);
                lRet = RegQueryValueEx(hKey, _T("PortName"), , &dwType, (LPBYTE)& szPortName, &dwReqSize);

                // Close reg key
                RegCloseKey(hKey);
            }
            if (_strnicmp(szPortName, "COM", ) == )
            {
                int port = atoi(&szPortName[]);
                int i;

                for (i = ; i < comports; i++)
                {
                    if (ComPortTable[i] == port)
                    {
                        ComPortDesc[i] = _strdup(szFriendlyName);
                        break;
                    }
                }
            }

        }
    }

cleanup:
    // Destroy device info list
    SetupDiDestroyDeviceInfoList(DeviceInfoSet);
}
int Serial::DetectComPorts(LPWORD ComPortTable, int ComPortMax, char **ComPortDesc)
{

    HMODULE h;
    TCHAR   devicesBuff[];
    TCHAR   *p;
    int     comports = ;
    int     i, j, min;
    WORD    s;

    if (((h = GetModuleHandle("kernel32.dll")) != NULL) && (GetProcAddress(h, "QueryDosDeviceA") != NULL) && (QueryDosDevice(NULL, devicesBuff, ) != ))
    {
        p = devicesBuff;
        TRACE("%s\r\n", devicesBuff);
        while (*p != '\0')
        {
            if (strncmp(p, "COM", ) ==  && p[] != '\0')
            {
                ComPortTable[comports++] = atoi(p + );
                if (comports >= ComPortMax)
                    break;
            }
            p += (strlen(p) + );
        }

        for (i = ; i < comports - ; i++)
        {
            min = i;
            for (j = i + ; j<comports; j++)
            {
                if (ComPortTable[min] > ComPortTable[j])
                {
                    min = j;
                }
            }
            if (min != i)
            {
                s = ComPortTable[i];
                ComPortTable[i] = ComPortTable[min];
                ComPortTable[min] = s;
            }
        }
    }
    else
    {
        for (i = ; i <= ComPortMax; i++)
        {
            FILE *fp;
            char buf[]; // \\.\COMxxxx + NULL
            _snprintf_s(buf, sizeof(buf), _TRUNCATE, "\\\\.\\COM%d", i);
            if ((fp = fopen(buf, "r")) != NULL)
            {
                fclose(fp);
                ComPortTable[comports++] = i;
            }
        }
    }

    ListupSerialPort(ComPortTable, comports, ComPortDesc, ComPortMax);

    return comports;
}
           

最后附上工程的下载地址：http://download.csdn.net/download/go2od/9943919