#ifndef _NTRTL_H
#if (PHNT_VERSION >= PHNT_WINDOWS_10_RS4)

NTSYSAPI
CHAR
NTAPI
RtlQueryProcessPlaceholderCompatibilityMode(
    VOID
    );

#endif
#endif
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// ntifs.h

NTSYSAPI CHAR RtlQueryProcessPlaceholderCompatibilityMode();
View the official Windows Driver Kit DDI reference

NtDoc

This function is documented in Windows Driver Kit.

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Windows Driver Kit DDI reference (nf-ntifs-rtlqueryprocessplaceholdercompatibilitymode)

RtlQueryProcessPlaceholderCompatibilityMode function

Description

RtlQueryProcessPlaceholderCompatibilityMode returns the placeholder compatibility mode for the current process.

Return value

This function returns the process's placeholder compatibility mode (PHCM_xxx), or a negative value on error (PCHM_ERROR_xxx). Contains one of the following values:

Compatibility Mode	Value
PHCM_APPLICATION_DEFAULT	0
PHCM_DISGUISE_PLACEHOLDER	1
PHCM_EXPOSE_PLACEHOLDERS	2
PHCM_MAX	2
PHCM_ERROR_INVALID_PARAMETER	-1
PHCM_ERROR_NO_TEB	-2

Remarks

This function is similar to RtlQueryThreadPlaceholderCompatibilityMode, but performs at a process level instead of a thread level.