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HidP_SetUsageValueArray (Windows Embedded CE 6.0)

  • Статья

1/6/2010

This function sets a HID control usage value array in a specified HID report.

Syntax

NTSTATUS HidP_SetUsageValueArray(
  HIDP_REPORT_TYPE ReportType,
  USAGE UsagePage,
  USHORT LinkCollection,
  USAGE Usage,
  PCHAR UsageValue,
  USHORT UsageValueByteLength,
  PHIDP_PREPARSED_DATA PreparsedData,
  PCHAR Report,
  ULONG ReportLength
);

Parameters

  • ReportType
    [in] HIDP_REPORT_TYPE enumerator value that indicates the type of HID report located at Report.
  • UsagePage
    [in] Usage page of a usage.
  • LinkCollection
    [in] Optional. Link collection that contains the usage. If LinkCollection is nonzero, the function only sets the usage, if one exists, in this link collection. If LinkCollection is zero, the function sets the first usage it finds in the top-level collection associated with PreparsedData.
  • Usage
    [in] Usage.
  • UsageValue
    [in] Pointer to a caller-allocated buffer that contains the data associated with the usage value array.
  • UsageValueByteLength
    [in] Length, in bytes, of the UsageValue buffer.
  • PreparsedData
    [in] Pointer to a top-level's preparsed data.
  • Report
    [out] Pointer to a HID report.
  • ReportLength
    [in] Size, in bytes, of the HID report located at Report, which must be equal to the report length for the specified report type that HidP_GetCaps returns in a collection's HIDP_CAPS structure.

Return Value

The following table shows the possible return values.

Value Description

HIDP_STATUS_SUCCESS

The function has successfully set the usage value.

HIDP_STATUS_INVALID_REPORT_LENGTH

Report length is not valid.

HIDP_STATUS_INVALID_REPORT_TYPE

Specified report type is not valid.

HIDP_STATUS_BUFFER_TOO_SMALL

Size, in bytes, of the UsageValue buffer is too small.

HIDP_STATUS_INCOMPATIBLE_REPORT_ID

Report contains a collection with buttons in the specified usage page, but there are no such usages in the report.

HIDP_STATUS_NOT_VALUE_ARRAY

Specified usage is not a usage value array.

HIDP_STATUS_INVALID_PREPARSED_DATA

Preparsed data is not valid.

HIDP_STATUS_REPORT_DOES_NOT_EXIST

No reports of the specified type exist.

HIDP_STATUS_NOT_IMPLEMENTED

Report size of data fields specified for the usage value array is not a multiple of eight bits.

HIDP_STATUS_USAGE_NOT_FOUND

Report contains a requested usage that is not in any report supported by the top-level collection.

Remarks

The terms button and usage are used synonymously.

Multiplying the BitSize and ReportCount members of the usage value array's HIDP_VALUE_CAPS structure, and rounding the result up to the nearest byte, determines the required size of the UsageValue buffer.

HidP_SetUsageValueArray only supports usage value arrays where each data field of the array is a multiple of eight bits.

The caller must set the UsageValue buffer exactly as it should occur in the report.

Requirements

Header hidpi.h
Library Hidparse_lib.lib
Windows Embedded CE Windows CE .NET 4.2 and later

See Also

Reference

HID Parser Functions
HIDP_CAPS
HidP_GetCaps
HIDP_REPORT_TYPE
HidP_SetScaledUsageValue
HidP_SetUsageValue
HIDP_VALUE_CAPS