The WdfUsbInterfaceGetNumConfiguredPipes method returns the number of pipes that are configured for a specified USB device interface.

BYTE
  WdfUsbInterfaceGetNumConfiguredPipes(
    IN WDFUSBINTERFACE  UsbInterface
    );

Parameters

UsbInterface

A handle to a USB interface object that was obtained by calling WdfUsbTargetDeviceGetInterface.

Return Value

WdfUsbInterfaceGetNumConfiguredPipes returns the number of pipes that are configured for the specified interface.

A bug check occurs if a driver-supplied object handle is invalid.

Comments

Your driver can call WdfUsbInterfaceGetNumConfiguredPipes after it has called WdfUsbTargetDeviceSelectConfig.

For more information about the WdfUsbInterfaceGetNumConfiguredPipes method and USB I/O targets, see USB I/O Targets.

Example

The following code example obtains the number of pipes that are configured for a specified USB interface.

BYTE pipeCount;

pipeCount = WdfUsbInterfaceGetNumConfiguredPipes(UsbInterface);

Requirements

Versions: The WdfUsbInterfaceGetNumConfiguredPipes method is available in version 1.0 and later versions of KMDF.

IRQL: <=DISPATCH_LEVEL

Headers: Declared in Wdfusb.h. Include Wdfusb.h.

See Also

WdfUsbTargetDeviceGetInterface, WdfUsbTargetDeviceSelectConfig