WdfUsbInterfaceGetInterfaceNumber function (wdfusb.h)
[Applies to KMDF and UMDF]
The WdfUsbInterfaceGetInterfaceNumber method returns the interface number of a specified USB interface object.
Syntax
BYTE WdfUsbInterfaceGetInterfaceNumber(
[in] WDFUSBINTERFACE UsbInterface
);
Parameters
[in] UsbInterface
A handle to a USB interface object that was obtained by calling WdfUsbTargetDeviceGetInterface.
Return value
WdfUsbInterfaceGetInterfaceNumber returns the interface number.
A bug check occurs if the driver supplies an invalid object handle.
Remarks
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.
Examples
The following code example obtains the interface number of a specified USB interface object.
BYTE interfaceNumber;
interfaceNumber = WdfUsbInterfaceGetInterfaceNumber(UsbInterface);
Requirements
| 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) |