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HIDP_CAPS (Windows Embedded CE 6.0)

  • Статья

1/6/2010

This structure contains information about a top-level collection's capability.

Syntax

typedef struct _HIDP_CAPS {
  USAGE Usage;
  USAGE UsagePage;
  USHORT InputReportByteLength;
  USHORT OutputReportByteLength;
  USHORT FeatureReportByteLength;
  USHORT Reserved[17];
  USHORT NumberLinkCollectionNodes;
  USHORT NumberInputButtonCaps;
  USHORT NumberInputValueCaps;
  USHORT NumberInputDataIndices;
  USHORT NumberOutputButtonCaps;
  USHORT NumberOutputValueCaps;
  USHORT NumberOutputDataIndices;
  USHORT NumberFeatureButtonCaps;
  USHORT NumberFeatureValueCaps;
  USHORT NumberFeatureDataIndices;
} HIDP_CAPS, * PHIDP_CAPS;

Members

  • Usage
    Top-level collection's usage identifier.
  • UsagePage
    Top-level collection's usage page.
  • InputReportByteLength
    Maximum size, in bytes, of the input reports, including the report identifier, if report identifiers are used, which is added to the beginning of the report data.
  • OutputReportByteLength
    Maximum size, in bytes, of all the output reports, including the report identifier, if report identifiers are used, which is added to the beginning of the report data.
  • FeatureReportByteLength
    Maximum length, in bytes, of all the feature reports, including the report identifier, if report identifiers are used, which is added to the beginning of the report data.
  • Reserved
    Reserved for internal system use.
  • NumberInputDataIndices
    Number of data indexes assigned to buttons and values in all input reports.
  • NumberOutputButtonCaps
    Number of output HIDP_BUTTON_CAPS structures that HidP_GetButtonCaps returns.
  • NumberOutputValueCaps
    Number of output HIDP_VALUE_CAPS structures that HidP_GetValueCaps returns.
  • NumberOutputDataIndices
    Number of data indexes assigned to buttons and values in all output reports.
  • NumberFeatureButtonCaps
    Total number of feature HIDP_BUTTONS_CAPS structures that HidP_GetButtonCaps returns
  • NumberFeatureValueCaps
    Total number of feature HIDP_VALUE_CAPS structures that HidP_GetValueCaps returns.
  • NumberFeatureDataIndices
    Number of data indexes assigned to buttons and values in all feature reports.

Remarks

Callers of the HID class support functions use the information provided in this structure when a called function requires, as input, the size of a report type, the number of link collection nodes, the number of control capabilities, or the number of data indexes.

Requirements

Header hidpi.h
Windows Embedded CE Windows CE .NET 4.2 and later

See Also

Reference

HID Parser Structures
HIDP_BUTTON_CAPS
HidP_GetCaps
HidP_GetButtonCaps
HidP_GetLinkCollectionNodes
HidP_GetSpecificButtonCaps
HidP_GetSpecificValueCaps
HidP_GetValueCaps
HIDP_LINK_COLLECTION_NODE
HIDP_VALUE_CAPS