AvSetMmThreadPriority

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

BOOL AvSetMmThreadPriority(
    AVRT_TASK_HANDLE AvrtHandle,
    AVRT_PRIORITY Priority
);

<DllImport("AVRT.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function AvSetMmThreadPriority(
    AvrtHandle As AVRT_TASK_HANDLE,   ' AVRT_TASK_HANDLE
    Priority As Integer   ' AVRT_PRIORITY
) As Boolean
End Function

' AvrtHandle : AVRT_TASK_HANDLE
' Priority : AVRT_PRIORITY
Declare PtrSafe Function AvSetMmThreadPriority Lib "avrt" ( _
    ByVal AvrtHandle As LongPtr, _
    ByVal Priority 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

AvSetMmThreadPriority = ctypes.windll.avrt.AvSetMmThreadPriority
AvSetMmThreadPriority.restype = wintypes.BOOL
AvSetMmThreadPriority.argtypes = [
    AVRT_TASK_HANDLE,  # AvrtHandle : AVRT_TASK_HANDLE
    ctypes.c_int,  # Priority : AVRT_PRIORITY
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('AVRT.dll')
AvSetMmThreadPriority = Fiddle::Function.new(
  lib['AvSetMmThreadPriority'],
  [
    Fiddle::TYPE_VOIDP,  # AvrtHandle : AVRT_TASK_HANDLE
    Fiddle::TYPE_INT,  # Priority : AVRT_PRIORITY
  ],
  Fiddle::TYPE_INT)

#[link(name = "avrt")]
extern "system" {
    fn AvSetMmThreadPriority(
        AvrtHandle: AVRT_TASK_HANDLE,  // AVRT_TASK_HANDLE
        Priority: i32  // AVRT_PRIORITY
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("AVRT.dll", SetLastError = true)]
public static extern bool AvSetMmThreadPriority(AVRT_TASK_HANDLE AvrtHandle, int Priority);
"@
$api = Add-Type -MemberDefinition $sig -Name 'AVRT_AvSetMmThreadPriority' -Namespace Win32 -PassThru
# $api::AvSetMmThreadPriority(AvrtHandle, Priority)

#uselib "AVRT.dll"
#func global AvSetMmThreadPriority "AvSetMmThreadPriority" sptr, sptr
; AvSetMmThreadPriority AvrtHandle, Priority   ; 戻り値は stat
; AvrtHandle : AVRT_TASK_HANDLE -> "sptr"
; Priority : AVRT_PRIORITY -> "sptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 "AVRT.dll"
#cfunc global AvSetMmThreadPriority "AvSetMmThreadPriority" int, int
; res = AvSetMmThreadPriority(AvrtHandle, Priority)
; AvrtHandle : AVRT_TASK_HANDLE -> "int"
; Priority : AVRT_PRIORITY -> "int"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。

; BOOL AvSetMmThreadPriority(AVRT_TASK_HANDLE AvrtHandle, AVRT_PRIORITY Priority)
#uselib "AVRT.dll"
#cfunc global AvSetMmThreadPriority "AvSetMmThreadPriority" int, int
; res = AvSetMmThreadPriority(AvrtHandle, Priority)
; AvrtHandle : AVRT_TASK_HANDLE -> "int"
; Priority : AVRT_PRIORITY -> "int"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。

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

var (
	avrt = windows.NewLazySystemDLL("AVRT.dll")
	procAvSetMmThreadPriority = avrt.NewProc("AvSetMmThreadPriority")
)

// AvrtHandle (AVRT_TASK_HANDLE), Priority (AVRT_PRIORITY)
r1, _, err := procAvSetMmThreadPriority.Call(
	uintptr(AvrtHandle),
	uintptr(Priority),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function AvSetMmThreadPriority(
  AvrtHandle: AVRT_TASK_HANDLE;   // AVRT_TASK_HANDLE
  Priority: Integer   // AVRT_PRIORITY
): BOOL; stdcall;
  external 'AVRT.dll' name 'AvSetMmThreadPriority';

result := DllCall("AVRT\AvSetMmThreadPriority"
    , "Ptr", AvrtHandle   ; AVRT_TASK_HANDLE
    , "Int", Priority   ; AVRT_PRIORITY
    , "Int")   ; return: BOOL

●AvSetMmThreadPriority(AvrtHandle, Priority) = DLL("AVRT.dll", "bool AvSetMmThreadPriority(void*, int)")
# 呼び出し: AvSetMmThreadPriority(AvrtHandle, Priority)
# AvrtHandle : AVRT_TASK_HANDLE -> "void*"
# Priority : AVRT_PRIORITY -> "int"
# 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)。