guiddef.h header

This header is used by Component Object Model (COM). For more information, see:

• Component Object Model (COM)

guiddef.h contains the following programming interfaces:

Functions

IsEqualCLSID Evaluates to a Boolean value that indicates whether two CLSIDs are equal.
IsEqualGUID Evaluates to a Boolean value that indicates whether two GUIDs are equal.
IsEqualIID Evaluates to a Boolean value that indicates whether two IIDs are equal.

Structures

GUID A GUID structure (guiddef.h) identifies an object such as a COM interfaces, or a COM class object, or a manager entry-point vector (EPV).