WdfUsbTargetDeviceGetNumInterfaces method
[Applies to KMDF and UMDF]
The WdfUsbTargetDeviceGetNumInterfaces method returns the number of USB device interfaces that are supported by a specified USB device.
Syntax
UCHAR WdfUsbTargetDeviceGetNumInterfaces(
[in] WDFUSBDEVICE UsbDevice
);
Parameters
- UsbDevice [in]
-
A handle to a USB device object that was obtained from a previous call to WdfUsbTargetDeviceCreateWithParameters.
Return value
WdfUsbTargetDeviceGetNumInterfaces returns the number of USB interfaces that the device supports.
A bug check occurs if a driver-supplied object handle is invalid.
Remarks
For more information about the WdfUsbTargetDeviceGetNumInterfaces method and USB I/O targets, see USB I/O Targets.
Examples
The following code example obtains the number of USB device interfaces that a specified USB device supports.
UCHAR numInterfaces; numInterfaces = WdfUsbTargetDeviceGetNumInterfaces(UsbDevice);
Requirements
|
Minimum KMDF version | 1.0 |
|---|---|
|
Minimum UMDF version | 2.0 |
|
Header |
|
|
Library |
|
|
IRQL | <=DISPATCH_LEVEL |
|
DDI compliance rules | DriverCreate, KmdfIrql, KmdfIrql2, UsbKmdfIrql, UsbKmdfIrql2 |
See also
Show:
