For general information about HIDClass devices, see HID Collections.
Parameters.DeviceIoControl.OutputBufferLength in the I/O stack location of the IRP indicates the size, in bytes, of the output buffer, which must be >= sizeof(HID_COLLECTION_INFORMATION).
Input Buffer Length
Greater than or equal to sizeof(HID_COLLECTION_INFORMATION).
Irp->AssociatedIrp.SystemBuffer points to a buffer that will receive the collection information. This data will be formatted in the requester-supplied buffer as a HID_COLLECTION_INFORMATION structure.
Output Buffer Length
The size of a HID_COLLECTION_INFORMATION structure.
The HID class driver sets the following fields of Irp->IoStatus:
- Information is set to sizeof(HID_COLLECTION_INFORMATION) if the data was retrieved successfully.
- Status is set to STATUS_SUCCESS if the transfer completed without error. Otherwise, it is set to an appropriate NTSTATUS error code.
|Header||hidclass.h (include Hidclass.h)|