HidP_MaxDataListLength function (hidpi.h)
The HidP_MaxDataListLength routine 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.
Syntax
ULONG HidP_MaxDataListLength(
[in] HIDP_REPORT_TYPE ReportType,
[in] PHIDP_PREPARSED_DATA PreparsedData
);
Parameters
[in] ReportType
Specifies a HIDP_REPORT_TYPE enumerator value that indicates the report type.
[in] PreparsedData
Pointer to a top-level collection's preparsed data.
Return value
If successful, HidP_MaxDataListLength returns the maximum number of HIDP_DATA structures that HidP_GetData might return for a specified type of HID report and a specified top-level collection. Otherwise, the routine returns zero, which indicates that either the report type or the preparsed data is not valid.
Remarks
User-mode applications or kernel-mode drivers call HidP_MaxDataListLength to determine the maximum number of HIDP_DATA structures that HidP_GetData can return.
For more information, see HID Collections.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows 2000 and later versions of Windows. |
| Target Platform | Universal |
| Header | hidpi.h (include Hidpi.h) |
| Library | Hidparse.lib |
| IRQL | <= DISPATCH_LEVEL |