IsProcessInJob

// KERNEL32.dll
#include <windows.h>

BOOL IsProcessInJob(
    HANDLE ProcessHandle,
    HANDLE JobHandle,   // optional
    BOOL* Result
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function IsProcessInJob(
    ProcessHandle As IntPtr,   ' HANDLE
    JobHandle As IntPtr,   ' HANDLE optional
    <Out> ByRef Result As Integer   ' BOOL* out
) As Boolean
End Function

' ProcessHandle : HANDLE
' JobHandle : HANDLE optional
' Result : BOOL* out
Declare PtrSafe Function IsProcessInJob Lib "kernel32" ( _
    ByVal ProcessHandle As LongPtr, _
    ByVal JobHandle As LongPtr, _
    ByRef Result As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

IsProcessInJob = ctypes.windll.kernel32.IsProcessInJob
IsProcessInJob.restype = wintypes.BOOL
IsProcessInJob.argtypes = [
    wintypes.HANDLE,  # ProcessHandle : HANDLE
    wintypes.HANDLE,  # JobHandle : HANDLE optional
    ctypes.c_void_p,  # Result : BOOL* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
IsProcessInJob = Fiddle::Function.new(
  lib['IsProcessInJob'],
  [
    Fiddle::TYPE_VOIDP,  # ProcessHandle : HANDLE
    Fiddle::TYPE_VOIDP,  # JobHandle : HANDLE optional
    Fiddle::TYPE_VOIDP,  # Result : BOOL* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn IsProcessInJob(
        ProcessHandle: *mut core::ffi::c_void,  // HANDLE
        JobHandle: *mut core::ffi::c_void,  // HANDLE optional
        Result: *mut i32  // BOOL* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern bool IsProcessInJob(IntPtr ProcessHandle, IntPtr JobHandle, out int Result);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_IsProcessInJob' -Namespace Win32 -PassThru
# $api::IsProcessInJob(ProcessHandle, JobHandle, Result)

#uselib "KERNEL32.dll"
#func global IsProcessInJob "IsProcessInJob" sptr, sptr, sptr
; IsProcessInJob ProcessHandle, JobHandle, Result   ; 戻り値は stat
; ProcessHandle : HANDLE -> "sptr"
; JobHandle : HANDLE optional -> "sptr"
; Result : BOOL* out -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

#uselib "KERNEL32.dll"
#cfunc global IsProcessInJob "IsProcessInJob" sptr, sptr, int
; res = IsProcessInJob(ProcessHandle, JobHandle, Result)
; ProcessHandle : HANDLE -> "sptr"
; JobHandle : HANDLE optional -> "sptr"
; Result : BOOL* out -> "int"

; BOOL IsProcessInJob(HANDLE ProcessHandle, HANDLE JobHandle, BOOL* Result)
#uselib "KERNEL32.dll"
#cfunc global IsProcessInJob "IsProcessInJob" intptr, intptr, int
; res = IsProcessInJob(ProcessHandle, JobHandle, Result)
; ProcessHandle : HANDLE -> "intptr"
; JobHandle : HANDLE optional -> "intptr"
; Result : BOOL* out -> "int"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procIsProcessInJob = kernel32.NewProc("IsProcessInJob")
)

// ProcessHandle (HANDLE), JobHandle (HANDLE optional), Result (BOOL* out)
r1, _, err := procIsProcessInJob.Call(
	uintptr(ProcessHandle),
	uintptr(JobHandle),
	uintptr(Result),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function IsProcessInJob(
  ProcessHandle: THandle;   // HANDLE
  JobHandle: THandle;   // HANDLE optional
  Result: Pointer   // BOOL* out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'IsProcessInJob';

result := DllCall("KERNEL32\IsProcessInJob"
    , "Ptr", ProcessHandle   ; HANDLE
    , "Ptr", JobHandle   ; HANDLE optional
    , "Ptr", Result   ; BOOL* out
    , "Int")   ; return: BOOL

●IsProcessInJob(ProcessHandle, JobHandle, Result) = DLL("KERNEL32.dll", "bool IsProcessInJob(void*, void*, void*)")
# 呼び出し: IsProcessInJob(ProcessHandle, JobHandle, Result)
# ProcessHandle : HANDLE -> "void*"
# JobHandle : HANDLE optional -> "void*"
# Result : BOOL* out -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。