WdfUsbInterfaceGetInterfaceNumber function (wdfusb.h)
[Applies to KMDF and UMDF]
The WdfUsbInterfaceGetInterfaceNumber method returns the interface number of a specified USB interface object.
C++
BYTE WdfUsbInterfaceGetInterfaceNumber(
[in] WDFUSBINTERFACE UsbInterface
);
[in] UsbInterface
A handle to a USB interface object that was obtained by calling WdfUsbTargetDeviceGetInterface.
WdfUsbInterfaceGetInterfaceNumber returns the interface number.
A bug check occurs if the driver supplies an invalid object handle.
For more information about interface numbers, see the USB specification.
For more information about the WdfUsbInterfaceGetInterfaceNumber method and USB I/O targets, see USB I/O Targets.
The following code example obtains the interface number of a specified USB interface object.
C++
BYTE interfaceNumber;
interfaceNumber = WdfUsbInterfaceGetInterfaceNumber(UsbInterface);
| Requirement | Value |
|---|---|
| Target Platform | Universal |
| Minimum KMDF version | 1.0 |
| Minimum UMDF version | 2.0 |
| Header | wdfusb.h (include Wdfusb.h) |
| Library | Wdf01000.sys (KMDF); WUDFx02000.dll (UMDF) |
| IRQL | <=DISPATCH_LEVEL |
| DDI compliance rules | DriverCreate(kmdf), KmdfIrql(kmdf), KmdfIrql2(kmdf), KmdfIrqlExplicit(kmdf), UsbKmdfIrql(kmdf), UsbKmdfIrql2(kmdf), UsbKmdfIrqlExplicit(kmdf) |