HidP_GetButtonsEx macro (hidpi.h)
The HidP_GetButtonsEx macro is a mnemonic alias for the HidP_GetUsagesEx function.
Syntax
#define HidP_GetButtonsEx(Rty, LCo, BLi, ULe, Ppd, Rep, RLe) \
HidP_GetUsagesEx(Rty, LCo, BLi, ULe, Ppd, Rep, RLe)
Parameters
[in] Rty
Specifies a HIDP_REPORT_TYPE enumerator value that identifies the report type.
[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.
[in, out] BLi
Pointer to a caller-allocated buffer that routine uses to return the usage and usage page identifiers for each button that is set to ON (1).
[in, out] ULe
Specifies, on input, the length, in array elements, of the BLi buffer. Specifies, on output, the number usages that are currently set to ON in the specified report.
[in] Ppd
Pointer to a top-level collection's pre-parsed data.
[in] Rep
Pointer to a report that contains button data.
[in] RLe
Specifies the length, in bytes, of the report located at Rep.
Return value
None
Remarks
See HidP_GetUsagesEx 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) |