USBC_FUNCTION_DESCRIPTOR structure (usbbusif.h)

The USBC_FUNCTION_DESCRIPTOR structure describes a USB function and its associated interface collection.

Syntax

typedef struct _USBC_FUNCTION_DESCRIPTOR {
  UCHAR                     FunctionNumber;
  UCHAR                     NumberOfInterfaces;
  PUSB_INTERFACE_DESCRIPTOR *InterfaceDescriptorList;
  UNICODE_STRING            HardwareId;
  UNICODE_STRING            CompatibleId;
  UNICODE_STRING            FunctionDescription;
  ULONG                     FunctionFlags;
  PVOID                     Reserved;
} USBC_FUNCTION_DESCRIPTOR, *PUSBC_FUNCTION_DESCRIPTOR;

Members

FunctionNumber

The zero-based index of the interface collection.

NumberOfInterfaces

The number of interfaces in the interface collection.

InterfaceDescriptorList

An array of pointers to USB_INTERFACE_DESCRIPTOR-type structures that describe the interfaces in the interface collection.

HardwareId

The hardware identifier of the interface collection.

CompatibleId

The compatible identifier of the interface collection.

FunctionDescription

A description of the interface collection in human-readable text.

FunctionFlags

Vendor-defined flags that describe the interface collection.

Reserved

Reserved.

Remarks

For information on how to use user-defined callback routines to provide a custom definition of the interface collections on a device, see Customizing Enumeration of Interface Collections for Composite Devices.

Requirements

See also

USB Structures

USB_INTERFACE_DESCRIPTOR