在进行了一些研究并查看了ProcessHacker的源代码之后，似乎获得conhost.exe的进程ID的方法是使用NtQuerySystemInformation。
我为测试目的编写了以下小程序，但它不起作用，我也看不出为什么。
{$APPTYPE CONSOLE}
{$TYPEDADDRESS ON}
program _QueryInformationProcess_ProcessConsoleHostProcess;
uses
Windows,
sysutils
;
{$ifdef VER90}
type
ptrint = longint;
ptruint = DWORD;
const
DELETE = $00010000;
READ_CONTROL = $00020000;
WRITE_DAC = $00040000;
WRITE_OWNER = $00080000;
SYNCHRONIZE = $00100000;
STANDARD_RIGHTS_REQUIRED = $000F0000;
STANDARD_RIGHTS_READ = READ_CONTROL;
STANDARD_RIGHTS_WRITE = READ_CONTROL;
STANDARD_RIGHTS_EXECUTE = READ_CONTROL;
STANDARD_RIGHTS_ALL = $001F0000;
SPECIFIC_RIGHTS_ALL = $0000FFFF;
PROCESS_ALL_ACCESS = STANDARD_RIGHTS_REQUIRED or SYNCHRONIZE or $FFF;
{$endif}
const
ntdll = 'ntdll.dll';
{ process information class(es) used in QueryInformationProcess }
type
PROCESSINFOCLASS =
(
{ 0 } ProcessBasicInformation, // q: PROCESS_BASIC_INFORMATION, PROCESS_EXTENDED_BASIC_INFORMATION
{ 1 } ProcessQuotaLimits, // qs: QUOTA_LIMITS, QUOTA_LIMITS_EX
{ 2 } ProcessIoCounters, // q: IO_COUNTERS
{ 3 } ProcessVmCounters, // q: VM_COUNTERS, VM_COUNTERS_EX, VM_COUNTERS_EX2
{ 4 } ProcessTimes, // q: KERNEL_USER_TIMES
{ 5 } ProcessBasePriority, // s: KPRIORITY
{ 6 } ProcessRaisePriority, // s: ULONG
{ 7 } ProcessDebugPort, // q: HANDLE
{ 8 } ProcessExceptionPort, // s: HANDLE
{ 9 } ProcessAccessToken, // s: PROCESS_ACCESS_TOKEN
{ 10 } ProcessLdtInformation, // qs: PROCESS_LDT_INFORMATION // 10
{ 11 } ProcessLdtSize, // s: PROCESS_LDT_SIZE
{ 12 } ProcessDefaultHardErrorMode, // qs: ULONG
{ 13 } ProcessIoPortHandlers, // (kernel-mode only)
{ 14 } ProcessPooledUsageAndLimits, // q: POOLED_USAGE_AND_LIMITS
{ 15 } ProcessWorkingSetWatch, // q: PROCESS_WS_WATCH_INFORMATION[]; s: void
{ 16 } ProcessUserModeIOPL,
{ 17 } ProcessEnableAlignmentFaultFixup, // s: BOOLEAN
{ 18 } ProcessPriorityClass, // qs: PROCESS_PRIORITY_CLASS
{ 19 } ProcessWx86Information,
{ 20 } ProcessHandleCount, // q: ULONG, PROCESS_HANDLE_INFORMATION // 20
{ 21 } ProcessAffinityMask, // s: KAFFINITY
{ 22 } ProcessPriorityBoost, // qs: ULONG
{ 23 } ProcessDeviceMap, // qs: PROCESS_DEVICEMAP_INFORMATION, PROCESS_DEVICEMAP_INFORMATION_EX
{ 24 } ProcessSessionInformation, // q: PROCESS_SESSION_INFORMATION
{ 25 } ProcessForegroundInformation, // s: PROCESS_FOREGROUND_BACKGROUND
{ 26 } ProcessWow64Information, // q: ULONG_PTR
{ 27 } ProcessImageFileName, // q: UNICODE_STRING
{ 28 } ProcessLUIDDeviceMapsEnabled, // q: ULONG
{ 29 } ProcessBreakOnTermination, // qs: ULONG
{ 30 } ProcessDebugObjectHandle, // q: HANDLE // 30
{ 31 } ProcessDebugFlags, // qs: ULONG
{ 32 } ProcessHandleTracing, // q: PROCESS_HANDLE_TRACING_QUERY; s: size 0 disables, otherwise enables
{ 33 } ProcessIoPriority, // qs: IO_PRIORITY_HINT
{ 34 } ProcessExecuteFlags, // qs: ULONG
{ 35 } ProcessResourceManagement,
{ 36 } ProcessCookie, // q: ULONG
{ 37 } ProcessImageInformation, // q: SECTION_IMAGE_INFORMATION
{ 38 } ProcessCycleTime, // q: PROCESS_CYCLE_TIME_INFORMATION // since VISTA
{ 39 } ProcessPagePriority, // q: ULONG
{ 40 } ProcessInstrumentationCallback, // 40
{ 41 } ProcessThreadStackAllocation, // s: PROCESS_STACK_ALLOCATION_INFORMATION, PROCESS_STACK_ALLOCATION_INFORMATION_EX
{ 42 } ProcessWorkingSetWatchEx, // q: PROCESS_WS_WATCH_INFORMATION_EX[]
{ 43 } ProcessImageFileNameWin32, // q: UNICODE_STRING
{ 44 } ProcessImageFileMapping, // q: HANDLE (input)
{ 45 } ProcessAffinityUpdateMode, // qs: PROCESS_AFFINITY_UPDATE_MODE
{ 46 } ProcessMemoryAllocationMode, // qs: PROCESS_MEMORY_ALLOCATION_MODE
{ 47 } ProcessGroupInformation, // q: USHORT[]
{ 48 } ProcessTokenVirtualizationEnabled, // s: ULONG
{ 49 } ProcessConsoleHostProcess, // q: ULONG_PTR
{ 50 } ProcessWindowInformation, // q: PROCESS_WINDOW_INFORMATION // 50
{ 51 } ProcessHandleInformation, // q: PROCESS_HANDLE_SNAPSHOT_INFORMATION // since WIN8
{ 52 } ProcessMitigationPolicy, // s: PROCESS_MITIGATION_POLICY_INFORMATION
{ 53 } ProcessDynamicFunctionTableInformation,
{ 54 } ProcessHandleCheckingMode,
{ 55 } ProcessKeepAliveCount, // q: PROCESS_KEEPALIVE_COUNT_INFORMATION
{ 56 } ProcessRevokeFileHandles, // s: PROCESS_REVOKE_FILE_HANDLES_INFORMATION
{ 57 } ProcessWorkingSetControl, // s: PROCESS_WORKING_SET_CONTROL
{ 58 } ProcessHandleTable, // since WINBLUE
{ 59 } ProcessCheckStackExtentsMode,
{ 60 } ProcessCommandLineInformation, // q: UNICODE_STRING // 60
{ 61 } ProcessProtectionInformation, // q: PS_PROTECTION
{ 62 } ProcessMemoryExhaustion, // PROCESS_MEMORY_EXHAUSTION_INFO // since THRESHOLD
{ 63 } ProcessFaultInformation, // PROCESS_FAULT_INFORMATION
{ 64 } ProcessTelemetryIdInformation, // PROCESS_TELEMETRY_ID_INFORMATION
{ 65 } ProcessCommitReleaseInformation, // PROCESS_COMMIT_RELEASE_INFORMATION
{ 66 } ProcessDefaultCpuSetsInformation,
{ 67 } ProcessAllowedCpuSetsInformation,
{ 68 } ProcessReserved1Information,
{ 69 } ProcessReserved2Information,
{ 70 } ProcessSubsystemProcess, // 70
{ 71 } ProcessJobMemoryInformation, // PROCESS_JOB_MEMORY_INFO
{ 72 } ProcessInPrivate, // since THRESHOLD2
{ 73 } ProcessRaiseUMExceptionOnInvalidHandleClose,
{ 74 } MaxProcessInfoClass
);
type
NTSTATUS = DWORD;
{-----------------------------------------------------------------------------}
function NtQueryInformationProcess(ProcessHandle : THANDLE;
ProcessInformationClass : DWORD;
ProcessInformation : pointer;
ProcessInformationLength : DWORD;
ReturnLength : PDWORD)
: NTSTATUS; stdcall; external ntdll;
{-----------------------------------------------------------------------------}
procedure EndProgram(ExitCode : ptruint);
begin
writeln('Exit code : ', ExitCode);
writeln('Press <enter>/<return> to end this program.');
readln;
end;
{-----------------------------------------------------------------------------}
var
ProcessHandle : THANDLE;
ReturnLength : DWORD;
NtResult : NTSTATUS;
{ upon success should contain the conhost.exe process id }
ConsoleHostProcess : ptruint;
begin
writeln;
writeln('GetCurrentProcessId : ', GetCurrentProcessId()); { not conhost's }
// since we are dealing with our own process we can specify PROCESS_ALL_ACCESS
ProcessHandle := OpenProcess(PROCESS_ALL_ACCESS,
FALSE,
GetCurrentProcessId());
if ProcessHandle = 0 then EndProgram(1);
// use the process handle to obtain conhost.exe process id
ReturnLength := 0; { for good measure }
NtResult := 0;
NtResult := NtQueryInformationProcess(ProcessHandle,
DWORD(ProcessConsoleHostProcess),
@ConsoleHostProcess,
sizeof(ConsoleHostProcess),
nil);
//@ReturnLength);
{ returns 0xC0000003 STATUS_INVALID_INFO_CLASS }
{ [Invalid Parameter] The specified information class is not a valid }
{ information class for the specified object. }
writeln('NTSTATUS : ', IntToHex(NtResult, 0));
writeln('ReturnLength : ', ReturnLength);
writeln;
writeln('Press <enter>/<result> to end this program.');
readln;
end.
如程序注释中所述，我得到NTSTATUS-0xC0000003 STATUS_INVALID_INFO_CLASS
这意味着：
[无效参数]指定的信息类对于指定的对象不是有效的信息类。
但是，我看不到，我的错误在哪里？
谢谢您的帮助。
答案 0 :(得分：2)
似乎参数ProcessConsoleHostProcess(49)在32位中不受支持，我可以在64位程序中使用它。您可以尝试使用x64进行编译。
为保持应用程序的兼容性，最好使用 说明中提到的公共职能 而是使用ProcessInformationClass参数。
或者您也可以使用Tool Help Functions以另一种方式获得它。这是相关的sample。