C# Signature:

public enum SYSTEM_INFORMATION_CLASS
{
    SystemBasicInformation = 0x0000,
    SystemProcessorInformation = 0x0001,
    SystemPerformanceInformation = 0x0002,
    SystemTimeOfDayInformation = 0x0003,
    SystemPathInformation = 0x0004,
    SystemProcessInformation = 0x0005,
    SystemCallCountInformation = 0x0006,
    SystemDeviceInformation = 0x0007,
    SystemProcessorPerformanceInformation = 0x0008,
    SystemFlagsInformation = 0x0009,
    SystemCallTimeInformation = 0x000A,
    SystemModuleInformation = 0x000B,
    SystemLocksInformation = 0x000C,
    SystemStackTraceInformation = 0x000D,
    SystemPagedPoolInformation = 0x000E,
    SystemNonPagedPoolInformation = 0x000F,
    SystemHandleInformation = 0x0010,
    SystemObjectInformation = 0x0011,
    SystemPageFileInformation = 0x0012,
    SystemVdmInstemulInformation = 0x0013,
    SystemVdmBopInformation = 0x0014,
    SystemFileCacheInformation = 0x0015,
    SystemPoolTagInformation = 0x0016,
    SystemInterruptInformation = 0x0017,
    SystemDpcBehaviorInformation = 0x0018,
    SystemFullMemoryInformation = 0x0019,
    SystemLoadGdiDriverInformation = 0x001A,
    SystemUnloadGdiDriverInformation = 0x001B,
    SystemTimeAdjustmentInformation = 0x001C,
    SystemSummaryMemoryInformation = 0x001D,
    SystemMirrorMemoryInformation = 0x001E,
    SystemPerformanceTraceInformation = 0x001F,
    SystemCrashDumpInformation = 0x0020,
    SystemExceptionInformation = 0x0021,
    SystemCrashDumpStateInformation = 0x0022,
    SystemKernelDebuggerInformation = 0x0023,
    SystemContextSwitchInformation = 0x0024,
    SystemRegistryQuotaInformation = 0x0025,
    SystemExtendServiceTableInformation = 0x0026,
    SystemPrioritySeperation = 0x0027,
    SystemVerifierAddDriverInformation = 0x0028,
    SystemVerifierRemoveDriverInformation = 0x0029,
    SystemProcessorIdleInformation = 0x002A,
    SystemLegacyDriverInformation = 0x002B,
    SystemCurrentTimeZoneInformation = 0x002C,
    SystemLookasideInformation = 0x002D,
    SystemTimeSlipNotification = 0x002E,
    SystemSessionCreate = 0x002F,
    SystemSessionDetach = 0x0030,
    SystemSessionInformation = 0x0031,
    SystemRangeStartInformation = 0x0032,
    SystemVerifierInformation = 0x0033,
    SystemVerifierThunkExtend = 0x0034,
    SystemSessionProcessInformation = 0x0035,
    SystemLoadGdiDriverInSystemSpace = 0x0036,
    SystemNumaProcessorMap = 0x0037,
    SystemPrefetcherInformation = 0x0038,
    SystemExtendedProcessInformation = 0x0039,
    SystemRecommendedSharedDataAlignment = 0x003A,
    SystemComPlusPackage = 0x003B,
    SystemNumaAvailableMemory = 0x003C,
    SystemProcessorPowerInformation = 0x003D,
    SystemEmulationBasicInformation = 0x003E,
    SystemEmulationProcessorInformation = 0x003F,
    SystemExtendedHandleInformation = 0x0040,
    SystemLostDelayedWriteInformation = 0x0041,
    SystemBigPoolInformation = 0x0042,
    SystemSessionPoolTagInformation = 0x0043,
    SystemSessionMappedViewInformation = 0x0044,
    SystemHotpatchInformation = 0x0045,
    SystemObjectSecurityMode = 0x0046,
    SystemWatchdogTimerHandler = 0x0047,
    SystemWatchdogTimerInformation = 0x0048,
    SystemLogicalProcessorInformation = 0x0049,
    SystemWow64SharedInformationObsolete = 0x004A,
    SystemRegisterFirmwareTableInformationHandler = 0x004B,
    SystemFirmwareTableInformation = 0x004C,
    SystemModuleInformationEx = 0x004D,
    SystemVerifierTriageInformation = 0x004E,
    SystemSuperfetchInformation = 0x004F,
    SystemMemoryListInformation = 0x0050, // SYSTEM_MEMORY_LIST_INFORMATION
    SystemFileCacheInformationEx = 0x0051,
    SystemThreadPriorityClientIdInformation = 0x0052,
    SystemProcessorIdleCycleTimeInformation = 0x0053,
    SystemVerifierCancellationInformation = 0x0054,
    SystemProcessorPowerInformationEx = 0x0055,
    SystemRefTraceInformation = 0x0056,
    SystemSpecialPoolInformation = 0x0057,
    SystemProcessIdInformation = 0x0058,
    SystemErrorPortInformation = 0x0059,
    SystemBootEnvironmentInformation = 0x005A,
    SystemHypervisorInformation = 0x005B,
    SystemVerifierInformationEx = 0x005C,
    SystemTimeZoneInformation = 0x005D,
    SystemImageFileExecutionOptionsInformation = 0x005E,
    SystemCoverageInformation = 0x005F,
    SystemPrefetchPatchInformation = 0x0060,
    SystemVerifierFaultsInformation = 0x0061,
    SystemSystemPartitionInformation = 0x0062,
    SystemSystemDiskInformation = 0x0063,
    SystemProcessorPerformanceDistribution = 0x0064,
    SystemNumaProximityNodeInformation = 0x0065,
    SystemDynamicTimeZoneInformation = 0x0066,
    SystemCodeIntegrityInformation = 0x0067,
    SystemProcessorMicrocodeUpdateInformation = 0x0068,
    SystemProcessorBrandString = 0x0069,
    SystemVirtualAddressInformation = 0x006A,
    SystemLogicalProcessorAndGroupInformation = 0x006B,
    SystemProcessorCycleTimeInformation = 0x006C,
    SystemStoreInformation = 0x006D,
    SystemRegistryAppendString = 0x006E,
    SystemAitSamplingValue = 0x006F,
    SystemVhdBootInformation = 0x0070,
    SystemCpuQuotaInformation = 0x0071,
    SystemNativeBasicInformation = 0x0072,
    SystemErrorPortTimeouts = 0x0073,
    SystemLowPriorityIoInformation = 0x0074,
    SystemBootEntropyInformation = 0x0075,
    SystemVerifierCountersInformation = 0x0076,
    SystemPagedPoolInformationEx = 0x0077,
    SystemSystemPtesInformationEx = 0x0078,
    SystemNodeDistanceInformation = 0x0079,
    SystemAcpiAuditInformation = 0x007A,
    SystemBasicPerformanceInformation = 0x007B,
    SystemQueryPerformanceCounterInformation = 0x007C,
    SystemSessionBigPoolInformation = 0x007D,
    SystemBootGraphicsInformation = 0x007E,
    SystemScrubPhysicalMemoryInformation = 0x007F,
    SystemBadPageInformation = 0x0080,
    SystemProcessorProfileControlArea = 0x0081,
    SystemCombinePhysicalMemoryInformation = 0x0082,
    SystemEntropyInterruptTimingInformation = 0x0083,
    SystemConsoleInformation = 0x0084,
    SystemPlatformBinaryInformation = 0x0085,
    SystemThrottleNotificationInformation = 0x0086,
    SystemHypervisorProcessorCountInformation = 0x0087,
    SystemDeviceDataInformation = 0x0088,
    SystemDeviceDataEnumerationInformation = 0x0089,
    SystemMemoryTopologyInformation = 0x008A,
    SystemMemoryChannelInformation = 0x008B,
    SystemBootLogoInformation = 0x008C,
    SystemProcessorPerformanceInformationEx = 0x008D,
    SystemSpare0 = 0x008E,
    SystemSecureBootPolicyInformation = 0x008F,
    SystemPageFileInformationEx = 0x0090,
    SystemSecureBootInformation = 0x0091,
    SystemEntropyInterruptTimingRawInformation = 0x0092,
    SystemPortableWorkspaceEfiLauncherInformation = 0x0093,
    SystemFullProcessInformation = 0x0094,
    MaxSystemInfoClass = 0x0095
}

VB Signature:

Declare Function SYSTEM_INFORMATION_CLASS Lib "ntdll.dll" (TODO) As TODO

User-Defined Types:

None.

Notes:

None.

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