WDF_USB_CONTINUOUS_READER_CONFIG_INIT function
[Applies to KMDF and UMDF]
The WDF_USB_CONTINUOUS_READER_CONFIG_INIT function initializes a WDF_USB_CONTINUOUS_READER_CONFIG structure.
Syntax
VOID WDF_USB_CONTINUOUS_READER_CONFIG_INIT( _Out_ PWDF_USB_CONTINUOUS_READER_CONFIG Config, _In_ PFN_WDF_USB_READER_COMPLETION_ROUTINE EvtUsbTargetPipeReadComplete, _In_ WDFCONTEXT EvtUsbTargetPipeReadCompleteContext, _In_ size_t TransferLength );
Parameters
- Config [out]
-
A pointer to a WDF_USB_CONTINUOUS_READER_CONFIG structure.
- EvtUsbTargetPipeReadComplete [in]
-
A pointer to the driver's EvtUsbTargetPipeReadComplete callback function.
- EvtUsbTargetPipeReadCompleteContext [in]
-
An untyped pointer to driver-defined context information that the framework passes to the driver's EvtUsbTargetPipeReadComplete callback function.
- TransferLength [in]
-
The maximum length, in bytes, of data that can be received from the device.
Return value
None
Remarks
The WDF_USB_CONTINUOUS_READER_CONFIG_INIT function zeros the specified WDF_USB_CONTINUOUS_READER_CONFIG structure and sets the structure's Size member. It also sets the structure's EvtUsbTargetPipeReadComplete, EvtUsbTargetPipeReadCompleteContext, and TransferLength members to the specified values.
Note that WDF_USB_CONTINUOUS_READER_CONFIG_INIT does not set the structure's EvtUsbTargetPipeReadersFailed member.
After calling WDF_USB_CONTINUOUS_READER_CONFIG_INIT, the driver can optionally add a EvtUsbTargetPipeReadersFailed pointer to the WDF_USB_CONTINUOUS_READER_CONFIG structure.
For a code example that uses WDF_USB_CONTINUOUS_READER_CONFIG_INIT, see WdfUsbTargetPipeConfigContinuousReader.
Requirements
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Minimum KMDF version | 1.0 |
|---|---|
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Minimum UMDF version | 2.0 |
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Header |
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See also
