HidD_GetNumInputBuffers function (hidsdi.h)
The HidD_GetNumInputBuffers routine returns the current size, in number of reports, of the ring buffer that the HID class driver uses to queue input reports from a specified top-level collection.
Syntax
BOOLEAN HidD_GetNumInputBuffers(
[in] HANDLE HidDeviceObject,
[out] PULONG NumberBuffers
);
Parameters
[in] HidDeviceObject
Specifies an open handle to a top-level collection.
[out] NumberBuffers
Pointer to a caller-allocated variable that the routine uses to return the maximum number of input reports the ring buffer can hold.
Return value
HidD_GetNumInputBuffers returns TRUE if it succeeds; otherwise, it returns FALSE. Use GetLastError to get extended error information.
Remarks
Only user-mode applications can call HidD_GetNumInputBuffers. Kernel-mode drivers can use the IOCTL_GET_NUM_DEVICE_INPUT_BUFFERS request.
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 | hidsdi.h (include Hidsdi.h) |
| Library | Hid.lib |
| DLL | Hid.dll |