I have been looking at ways to create a GUID. Below is the code I plan on implementing. Since, I am still cutting my teeth on C++. I wanted to get some feed back.

Thanks in advance for your help/input.

CString BuildGUID()
{
    long lRetVal = 0;
    GUID *oGuid;
    CString strPartOne;
    CString strPartTwo;
    CString strPartThree;
    CString strPartFour;
    CString strGUID;

    // Int variables
    strGUID = " ";
    oGuid = new GUID;
    // Call the API Function to get the GUID
    lRetVal = CoCreateGuid(oGuid);
    // Build the guid
    if (lRetVal == 0)
    {
        // Get the first 8 characters
        strPartOne.Format("%X_", oGuid->Data1);
        // Get the next 4 characters
        strPartTwo.Format("%X_", oGuid->Data2);
        // Get the next 4 characters
        strPartThree.Format("%X_", oGuid->Data3);
        // Get the next 6 characters
        strPartFour.Format("%X", oGuid->Data4);
        // Build the GUID
        strGUID = strPartOne + strPartTwo + strPartThree + strPartFour;
    }
    // Return the GUID
    return strGUID;
}

Larry Asher

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Larry Asher

Not sure if that'll work...try this one. Be sure to includ rpcrt4.lib as an additional dependency.

    // generate new guid
    GUID Guid;
    if(!(::CoCreateGuid(&Guid) == S_OK))
        return ERROR;

    // convert guid to CString
    CString GuidStr;
    BYTE* Str;
    UuidToString((UUID*)&Guid, &Str);
    GuidStr.Format("{%s}", (LPTSTR)Str);
    RpcStringFree(&Str);