HidP_GetSpecificValueCaps (Windows Embedded CE 6.0)

1/6/2010

This function returns a value capability array that describes all HID control values that meet specified selection criteria.

Syntax

NTSTATUS HidP_GetSpecificValueCaps(
  HIDP_REPORT_TYPE ReportType,
  USAGE UsagePage,
  USHORT LinkCollection,
  USAGE Usage,
  PHIDP_VALUE_CAPS ValueCaps,
  PULONG ValueCapsLength,
  PHIDP_PREPARSED_DATA PreparsedData
);

Parameters

• ReportType
  [in] HIDP_REPORT_TYPE enumerator value that identifies the report type.

• UsagePage
  [in] Usage page as search criteria. If UsagePage is nonzero, this function only returns values that specify this usage page.

• LinkCollection
  [in] Link collection as search criteria. If LinkCollection is nonzero, this function only returns values that are part of this link collection.

• Usage
  [in] HID usage as search criteria. If Usage is nonzero, this function only returns values that specify this usage.

• ValueCaps
  [out] Pointer to a caller-allocated buffer for the function to return a value capability array for the specified report type.

• ValueCapsLength
  [in, out] On input, length in array elements of the buffer provided at ValueCaps. On output, the number of elements the function returns.

• PreparsedData
  [in] Pointer to a top-level collection's preparsed data.

Return Value

Returns HIDP_STATUS_SUCCESS if the function successfully returned the capability data. Returns HIDP_STATUS_INVALID_PREPARSED_DATA if the preparsed data is not valid.

Remarks

The required size of the ValueCaps buffer is specified by the NumberXXXValueCaps members of a top-level collection's HIDP_CAPS structure.

When calling HidP_GetSpecificValueCaps, specifying zero for UsagePage, Usage, and LinkCollection is equivalent to calling HidP_GetValueCaps.

Requirements

See Also

Reference

HID Parser Functions
HIDP_CAPS
HidP_GetCaps
HidP_GetValueCaps
HIDP_REPORT_TYPE
HIDP_VALUE_CAPS