HID Parser Functions

Other versions of this page are also available for the following:

• Windows Embedded CE 6.0 R3

8/28/2008

The following table shows the HID parser functions.

Programming element	Description
HidP_FreeCollectionDescription	This function frees the resources in the DeviceDescription parameter that the HidP_GetCollectionDescription function allocated.
HidP_GetButtonCaps	This function returns a button capability array that describes the HID control buttons in a top-level collection for a specified type of HID report.
HidP_GetCaps	This function returns a top-level collection's HIDP_CAPS structure.
HidP_GetCollectionDescription	This function adds a linked list of collection descriptors to the DeviceDescription parameter block. It also adds the corresponding report-identifier information that is described by the specified report descriptor.
HidP_GetData	This function returns an array of HIDP_DATA structures for a specified report that identifies the data indexes of all HID control buttons currently set to On (one). It also returns data indexes and data associated with all HID control values.
HidP_GetExtendedAttributes	This function returns the extended attributes of a HID control.
HidP_GetLinkCollectionNodes	This function returns a top-level collection's link collection array.
HidP_GetScaledUsageValue	This function returns the signed and scaled result of a HID control value extracted from a HID report.
HidP_GetSpecificButtonCaps	This function returns a button capability array that describes all HID control buttons in a top-level collection that meet a specified selection criteria.
HidP_GetSpecificValueCaps	This function returns a value capability array that describes all HID control values that meet specified selection criteria.
HidP_GetUsages	This function returns a list of the HID control button usages that are in a specified usage page and are set to On in a HID report.
HidP_GetUsagesEx	This function returns a list of the HID control button usages that are set to On in a HID report.
HidP_GetUsageValue	This function extracts the data associated with a HID control value that matches selection criteria in a HID report.
HidP_GetUsageValueArray	This function extracts the data associated with a HID control usage value array from a HID report.
HidP_GetValueCaps	This function returns a value capability array that describes the HID control values in a top-level collection for a specified type of HID report.
HidP_InitializeReportForID	This function initializes a HID report.
HidP_MaxDataListLength	This function returns the maximum number of HIDP_DATA structures that HidP_GetData can return for a specified type of HID report and a specified top-level collection.
HidP_MaxUsageListLength	This function returns the maximum number of HID usages that the HidP_GetUsages function can return for a specified type of HID report and a specified top-level collection.
HidP_SetData	This function sets a specified set of HID control button and value usages in a HID report.
HidP_SetScaledUsageValue	This function converts a signed and scaled physical number to a HID usage's logical value, and sets the usage value in a specified HID report.
HidP_SetUsages	This function sets the specified HID control buttons On (one) in a HID report.
HidP_SetUsageValue	This function sets a HID control value in a specified HID report.
HidP_SetUsageValueArray	This function sets a HID control usage value array in a specified HID report.
HidP_UnsetUsages	This function sets specified HID control button usages to Off (zero) in a HID report.
HidP_UsageAndPageListDifference	This function returns the difference between two arrays of HID extended usages.
HidP_UsageListDifference	This function returns the difference between two arrays of HID usages.