HidP_GetButtons macro (hidpi.h)
The HidP_GetButtons macro is a mnemonic alias for the HidP_GetUsages function.
Syntax
#define HidP_GetButtons(Rty, UPa, LCo, ULi, ULe, Ppd, Rep, RLe) \
HidP_GetUsages(Rty, UPa, LCo, ULi, ULe, Ppd, Rep, RLe)
Parameters
[in] Rty
Specifies a HIDP_REPORT_TYPE enumerator value that identifies the report type.
[in] UPa
Specifies the usage page of the button usages. The routine only returns information about buttons on this usage page.
[in] LCo
Specifies the link collection of the button usages. If LCo is nonzero, the routine only returns information about the buttons that this link collection contains; otherwise, if LCo is zero, the routine returns information about all the buttons in the top-level collection associated with Ppd.
[out] ULi
Pointer to a caller-allocated buffer that the routine uses to return the usages of all buttons that are set to ON and belong to the usage page specified by UPa.
[in, out] ULe
Specifies, on input, the length, in array elements, of the ULi buffer. Specifies, on output, the number of buttons that are set to ON on the specified usage page.
[in] Ppd
Pointer to a top-level collection's pre-parsed data.
[out] Rep
Pointer to a report.
[in] RLe
Specifies the length, in bytes, of the report located at Rep.
Return value
None
Remarks
See HidP_GetUsages for return value details.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows 2000 and later versions of Windows. |
| Target Platform | Universal |
| Header | hidpi.h (include hidpi.h) |