/// <summary>
/// Retrieves the raw input from the specified device.
/// </summary>
/// <param name="rawInputDataHandle">
/// The handle to the <see cref="RawInputData"/> structure. This comes from <see cref="Message.LParam"/> for
/// messages of type <c>WM_INPUT</c>.
/// </param>
/// <param name="rawInputData">
/// A correctly sized buffer (see <see cref="GetRawInputDataSize"/>) where to copy the data that comes from the
/// <see cref="RawInputData"/> structure.
/// </param>
/// <returns>
/// A reference to the <see cref="RawInputData"/> structure.
/// </returns>
/// <remarks>
/// This function gets the raw input one <see cref="RawInputData"/> structure at a time. In contrast,
/// <see cref="GetRawInputBuffer"/> gets an array of <see cref="RawInputData"/> structures.
/// </remarks>
internal static unsafe ref RawInputData GetRawInputData(IntPtr rawInputDataHandle, Span <byte> rawInputData)
{
var dataSize = (uint)rawInputData.Length;
fixed(void *ptrRawInputData = &rawInputData[0])
{
GetRawInputData_((void *)rawInputDataHandle,
(uint)RawInputDataType.Input,
ptrRawInputData,
&dataSize,
RawInputHeader.HeaderSize);
RawInputData *rawInputPtr = (RawInputData *)ptrRawInputData;
return(ref *rawInputPtr);
}
}
/// <summary>
/// Retrieves the location of the next structure in an array of <see cref="RawInputData"/> structures.
/// </summary>
/// <param name="ptrRawInput">A pointer to a structure in an array of <see cref="RawInputData"/> structures.</param>
/// <unmanaged>NEXTRAWINPUTBLOCK(ptr)</unmanaged>
private static unsafe RawInputData *NextRawInputBlock(RawInputData *ptrRawInput)
{
// ((PRAWINPUT)RAWINPUT_ALIGN((ULONG_PTR)((PBYTE)(ptr) + (ptr)->header.dwSize)))
return((RawInputData *)RawInputAlign((byte *)ptrRawInput + ptrRawInput->Header.Size));
}
