MFGetWorkQueueMMCSSPriority

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

HRESULT MFGetWorkQueueMMCSSPriority(
    DWORD dwWorkQueueId,
    INT* lPriority
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFGetWorkQueueMMCSSPriority(
    dwWorkQueueId As UInteger,   ' DWORD
    <Out> ByRef lPriority As Integer   ' INT* out
) As Integer
End Function

' dwWorkQueueId : DWORD
' lPriority : INT* out
Declare PtrSafe Function MFGetWorkQueueMMCSSPriority Lib "mfplat" ( _
    ByVal dwWorkQueueId As Long, _
    ByRef lPriority 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

MFGetWorkQueueMMCSSPriority = ctypes.windll.mfplat.MFGetWorkQueueMMCSSPriority
MFGetWorkQueueMMCSSPriority.restype = ctypes.c_int
MFGetWorkQueueMMCSSPriority.argtypes = [
    wintypes.DWORD,  # dwWorkQueueId : DWORD
    ctypes.POINTER(ctypes.c_int),  # lPriority : INT* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFGetWorkQueueMMCSSPriority = Fiddle::Function.new(
  lib['MFGetWorkQueueMMCSSPriority'],
  [
    -Fiddle::TYPE_INT,  # dwWorkQueueId : DWORD
    Fiddle::TYPE_VOIDP,  # lPriority : INT* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFGetWorkQueueMMCSSPriority(
        dwWorkQueueId: u32,  // DWORD
        lPriority: *mut i32  // INT* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MFPlat.dll")]
public static extern int MFGetWorkQueueMMCSSPriority(uint dwWorkQueueId, out int lPriority);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFGetWorkQueueMMCSSPriority' -Namespace Win32 -PassThru
# $api::MFGetWorkQueueMMCSSPriority(dwWorkQueueId, lPriority)

#uselib "MFPlat.dll"
#func global MFGetWorkQueueMMCSSPriority "MFGetWorkQueueMMCSSPriority" sptr, sptr
; MFGetWorkQueueMMCSSPriority dwWorkQueueId, varptr(lPriority)   ; 戻り値は stat
; dwWorkQueueId : DWORD -> "sptr"
; lPriority : INT* 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 "MFPlat.dll"
#cfunc global MFGetWorkQueueMMCSSPriority "MFGetWorkQueueMMCSSPriority" int, var
; res = MFGetWorkQueueMMCSSPriority(dwWorkQueueId, lPriority)
; dwWorkQueueId : DWORD -> "int"
; lPriority : INT* 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。

; HRESULT MFGetWorkQueueMMCSSPriority(DWORD dwWorkQueueId, INT* lPriority)
#uselib "MFPlat.dll"
#cfunc global MFGetWorkQueueMMCSSPriority "MFGetWorkQueueMMCSSPriority" int, var
; res = MFGetWorkQueueMMCSSPriority(dwWorkQueueId, lPriority)
; dwWorkQueueId : DWORD -> "int"
; lPriority : INT* 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 (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFGetWorkQueueMMCSSPriority = mfplat.NewProc("MFGetWorkQueueMMCSSPriority")
)

// dwWorkQueueId (DWORD), lPriority (INT* out)
r1, _, err := procMFGetWorkQueueMMCSSPriority.Call(
	uintptr(dwWorkQueueId),
	uintptr(lPriority),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFGetWorkQueueMMCSSPriority(
  dwWorkQueueId: DWORD;   // DWORD
  lPriority: Pointer   // INT* out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFGetWorkQueueMMCSSPriority';

result := DllCall("MFPlat\MFGetWorkQueueMMCSSPriority"
    , "UInt", dwWorkQueueId   ; DWORD
    , "Ptr", lPriority   ; INT* out
    , "Int")   ; return: HRESULT

●MFGetWorkQueueMMCSSPriority(dwWorkQueueId, lPriority) = DLL("MFPlat.dll", "int MFGetWorkQueueMMCSSPriority(dword, void*)")
# 呼び出し: MFGetWorkQueueMMCSSPriority(dwWorkQueueId, lPriority)
# dwWorkQueueId : DWORD -> "dword"
# lPriority : INT* 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)。