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WDF_REQUEST_PARAMETERS_INIT function

[Applies to KMDF and UMDF]

The WDF_REQUEST_PARAMETERS_INIT function initializes a WDF_REQUEST_PARAMETERS structure.

Syntax


VOID WDF_REQUEST_PARAMETERS_INIT(
  _Out_  PWDF_REQUEST_PARAMETERS Parameters
);

Parameters

Parameters [out]

A pointer to a caller-supplied WDF_REQUEST_PARAMETERS structure.

Return value

None

Remarks

Drivers must call WDF_REQUEST_PARAMETERS_INIT to initialize a WDF_REQUEST_PARAMETERS structure before calling WdfRequestGetParameters.

The WDF_REQUEST_PARAMETERS_INIT function zeros the specified WDF_REQUEST_PARAMETERS structure and sets the structure's Size member.

Examples

The following code example initializes a WDF_REQUEST_PARAMETERS structure and then calls WdfRequestGetParameters.


VOID
MyEvtIoDefault(
    IN WDFQUEUE  Queue,
    IN WDFREQUEST  Request
    )
{
    WDF_REQUEST_PARAMETERS  params;

    WDF_REQUEST_PARAMETERS_INIT(&params);

    WdfRequestGetParameters(
                            Request,
                            &params
                            );
...
}

Requirements

Minimum KMDF version

1.0

Minimum UMDF version

2.0

Header

Wdfrequest.h (include Wdf.h)

See also

WdfRequestGetParameters
WDF_REQUEST_PARAMETERS

 

 

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