Comparing two GUIDs for equality in C++

Question

I am looking for the easiest way to compare two GUIDs for equality in C++. Surely there is a predefined function for that.

The solution needs to work with Visual C++ 2010.

I am talking of GUID as defined in Guiddef.h:

typedef struct _GUID {
    unsigned long  Data1;
    unsigned short Data2;
    unsigned short Data3;
    unsigned char  Data4[ 8 ];
} GUID;

Answer 1

Perhaps you want IsEqualGUID (which uses memcmp behind the scenes) or just use operator== (which calls IsEqualGUID for you).

Answer 2

Is the == operator not overloaded to do this for you? Or use IsEqualGUID.