SetThreadIdealProcessorEx

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

BOOL SetThreadIdealProcessorEx(
    HANDLE hThread,
    PROCESSOR_NUMBER* lpIdealProcessor,
    PROCESSOR_NUMBER* lpPreviousIdealProcessor   // optional
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetThreadIdealProcessorEx(
    hThread As IntPtr,   ' HANDLE
    lpIdealProcessor As IntPtr,   ' PROCESSOR_NUMBER*
    lpPreviousIdealProcessor As IntPtr   ' PROCESSOR_NUMBER* optional, out
) As Boolean
End Function

' hThread : HANDLE
' lpIdealProcessor : PROCESSOR_NUMBER*
' lpPreviousIdealProcessor : PROCESSOR_NUMBER* optional, out
Declare PtrSafe Function SetThreadIdealProcessorEx Lib "kernel32" ( _
    ByVal hThread As LongPtr, _
    ByVal lpIdealProcessor As LongPtr, _
    ByVal lpPreviousIdealProcessor As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SetThreadIdealProcessorEx = ctypes.windll.kernel32.SetThreadIdealProcessorEx
SetThreadIdealProcessorEx.restype = wintypes.BOOL
SetThreadIdealProcessorEx.argtypes = [
    wintypes.HANDLE,  # hThread : HANDLE
    ctypes.c_void_p,  # lpIdealProcessor : PROCESSOR_NUMBER*
    ctypes.c_void_p,  # lpPreviousIdealProcessor : PROCESSOR_NUMBER* optional, out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
SetThreadIdealProcessorEx = Fiddle::Function.new(
  lib['SetThreadIdealProcessorEx'],
  [
    Fiddle::TYPE_VOIDP,  # hThread : HANDLE
    Fiddle::TYPE_VOIDP,  # lpIdealProcessor : PROCESSOR_NUMBER*
    Fiddle::TYPE_VOIDP,  # lpPreviousIdealProcessor : PROCESSOR_NUMBER* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn SetThreadIdealProcessorEx(
        hThread: *mut core::ffi::c_void,  // HANDLE
        lpIdealProcessor: *mut PROCESSOR_NUMBER,  // PROCESSOR_NUMBER*
        lpPreviousIdealProcessor: *mut PROCESSOR_NUMBER  // PROCESSOR_NUMBER* optional, 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 SetThreadIdealProcessorEx(IntPtr hThread, IntPtr lpIdealProcessor, IntPtr lpPreviousIdealProcessor);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_SetThreadIdealProcessorEx' -Namespace Win32 -PassThru
# $api::SetThreadIdealProcessorEx(hThread, lpIdealProcessor, lpPreviousIdealProcessor)

#uselib "KERNEL32.dll"
#func global SetThreadIdealProcessorEx "SetThreadIdealProcessorEx" sptr, sptr, sptr
; SetThreadIdealProcessorEx hThread, varptr(lpIdealProcessor), varptr(lpPreviousIdealProcessor)   ; 戻り値は stat
; hThread : HANDLE -> "sptr"
; lpIdealProcessor : PROCESSOR_NUMBER* -> "sptr"
; lpPreviousIdealProcessor : PROCESSOR_NUMBER* optional, 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 SetThreadIdealProcessorEx "SetThreadIdealProcessorEx" sptr, var, var
; res = SetThreadIdealProcessorEx(hThread, lpIdealProcessor, lpPreviousIdealProcessor)
; hThread : HANDLE -> "sptr"
; lpIdealProcessor : PROCESSOR_NUMBER* -> "var"
; lpPreviousIdealProcessor : PROCESSOR_NUMBER* optional, out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; BOOL SetThreadIdealProcessorEx(HANDLE hThread, PROCESSOR_NUMBER* lpIdealProcessor, PROCESSOR_NUMBER* lpPreviousIdealProcessor)
#uselib "KERNEL32.dll"
#cfunc global SetThreadIdealProcessorEx "SetThreadIdealProcessorEx" intptr, var, var
; res = SetThreadIdealProcessorEx(hThread, lpIdealProcessor, lpPreviousIdealProcessor)
; hThread : HANDLE -> "intptr"
; lpIdealProcessor : PROCESSOR_NUMBER* -> "var"
; lpPreviousIdealProcessor : PROCESSOR_NUMBER* optional, out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procSetThreadIdealProcessorEx = kernel32.NewProc("SetThreadIdealProcessorEx")
)

// hThread (HANDLE), lpIdealProcessor (PROCESSOR_NUMBER*), lpPreviousIdealProcessor (PROCESSOR_NUMBER* optional, out)
r1, _, err := procSetThreadIdealProcessorEx.Call(
	uintptr(hThread),
	uintptr(lpIdealProcessor),
	uintptr(lpPreviousIdealProcessor),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SetThreadIdealProcessorEx(
  hThread: THandle;   // HANDLE
  lpIdealProcessor: Pointer;   // PROCESSOR_NUMBER*
  lpPreviousIdealProcessor: Pointer   // PROCESSOR_NUMBER* optional, out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'SetThreadIdealProcessorEx';

result := DllCall("KERNEL32\SetThreadIdealProcessorEx"
    , "Ptr", hThread   ; HANDLE
    , "Ptr", lpIdealProcessor   ; PROCESSOR_NUMBER*
    , "Ptr", lpPreviousIdealProcessor   ; PROCESSOR_NUMBER* optional, out
    , "Int")   ; return: BOOL

●SetThreadIdealProcessorEx(hThread, lpIdealProcessor, lpPreviousIdealProcessor) = DLL("KERNEL32.dll", "bool SetThreadIdealProcessorEx(void*, void*, void*)")
# 呼び出し: SetThreadIdealProcessorEx(hThread, lpIdealProcessor, lpPreviousIdealProcessor)
# hThread : HANDLE -> "void*"
# lpIdealProcessor : PROCESSOR_NUMBER* -> "void*"
# lpPreviousIdealProcessor : PROCESSOR_NUMBER* optional, 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)。