#ifndef _NTEXAPI_H
#if (PHNT_MODE != PHNT_MODE_KERNEL)

/**
 * The NtQueryInformationAtom routine retrieves information about a specified atom in the system atom table.
 *
 * \param Atom The atom identifier for which information is being queried.
 * \param AtomInformationClass Specifies the type of information to retrieve. This is an ATOM_INFORMATION_CLASS value.
 * \param AtomInformation A pointer to a buffer that receives the requested information.
 * \param AtomInformationLength The size, in bytes, of the AtomInformation buffer.
 * \param ReturnLength Optional pointer to a variable that receives the number of bytes written to the AtomInformation buffer.
 * \return NTSTATUS Successful or errant status.
 */
NTSYSCALLAPI
NTSTATUS
NTAPI
NtQueryInformationAtom(
    _In_ RTL_ATOM Atom,
    _In_ ATOM_INFORMATION_CLASS AtomInformationClass,
    _Out_writes_bytes_(AtomInformationLength) PVOID AtomInformation,
    _In_ ULONG AtomInformationLength,
    _Out_opt_ PULONG ReturnLength
    );

#endif
#endif
View code on GitHub

#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwQueryInformationAtom(
    _In_ RTL_ATOM Atom,
    _In_ ATOM_INFORMATION_CLASS AtomInformationClass,
    _Out_writes_bytes_(AtomInformationLength) PVOID AtomInformation,
    _In_ ULONG AtomInformationLength,
    _Out_opt_ PULONG ReturnLength
    );

#endif
View code on GitHub