C++获取GUID

//获取guid需要的头文件  
//#include <atlstr.h>  
//#pragma comment(lib, "Rpcrt4.lib")  

class  CGUID
{
public:
    
    //获取GUID
    static CString GetGUID()
    {
        GUID guid;
        HRESULT hr = CoCreateGuid(&guid);
        
        CString strGUID;
        strGUID.Format(_T("%08X-%04X-%04x-%02X%02X-%02X%02X%02X%02X%02X%02X"), //无大括号  
        guid.Data1, guid.Data2, guid.Data3,  
        guid.Data4[0], guid.Data4[1], guid.Data4[2], guid.Data4[3],  
        guid.Data4[4], guid.Data4[5], guid.Data4[6], guid.Data4[7]);  

        return strGUID;
    }
};