RtlStringFromGUID - NtDoc

#ifndef _NTRTL_H

/**
 * The RtlStringFromGUID routine converts a given GUID from binary format into a Unicode string.
 *
 * \param[in] Guid Specifies the binary-format GUID to convert.
 * \param[out] GuidString Pointer to a caller-supplied variable in which a pointer to the converted GUID string is returned and must free by calling RtlFreeUnicodeString.
 * \return NTSTATUS Successful or errant status.
 * \sa https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/wdm/nf-wdm-rtlstringfromguid
 */
NTSYSAPI
NTSTATUS
NTAPI
RtlStringFromGUID(
    _In_ PGUID Guid,
    _Out_ PUNICODE_STRING GuidString
    );

#endif
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