How to get serial port name like this in c? Not COM number?

Question

how to get the serial port name by my red pen. Not COM5.COM5 can be gotten by windows-API. If you know it, please let me know. I'll appreciate it!

enter image description here Now, I can get both serial ports full name and COMX. But which is true? I know how to find true one by manual manipulation instead of my coding program. But how to find true one by my coding program.

enter code here
 GUID classGuids = {0x4D36E978L, 0xE325, 0x11CE, 0xBF, 0xC1, 0x08, 0x00, 0x2B, 0xE1, 0x03, 0x18};   //GetClassGUIDs("ports");   //&GUID_DEVCLASS_PORTS

HDEVINFO hDevInfo = SetupDiGetClassDevs((LPGUID)&classGuids, NULL, NULL, 0);
if(hDevInfo)
{
    SP_DEVINFO_DATA SpDevInfo={sizeof(SP_DEVINFO_DATA)};
    for(DWORD iDevIndex=0; SetupDiEnumDeviceInfo(hDevInfo, iDevIndex, &SpDevInfo); iDevIndex++)
    {      
        TCHAR szName[512] = {0};
        if(SetupDiGetDeviceRegistryProperty(hDevInfo, &SpDevInfo, SPDRP_FRIENDLYNAME, 
            NULL, (PBYTE)szName, sizeof(szName), NULL))
        {
            _tprintf(_T("........%s\n"), szName);
        }
    }

    SetupDiDestroyDeviceInfoList(hDevInfo);