SHGetThreadRef

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

HRESULT SHGetThreadRef(
    IUnknown** ppunk
);

<DllImport("SHLWAPI.dll", ExactSpelling:=True)>
Public Shared Function SHGetThreadRef(
    ppunk As IntPtr   ' IUnknown** out
) As Integer
End Function

' ppunk : IUnknown** out
Declare PtrSafe Function SHGetThreadRef Lib "shlwapi" ( _
    ByVal ppunk 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

SHGetThreadRef = ctypes.windll.shlwapi.SHGetThreadRef
SHGetThreadRef.restype = ctypes.c_int
SHGetThreadRef.argtypes = [
    ctypes.c_void_p,  # ppunk : IUnknown** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
SHGetThreadRef = Fiddle::Function.new(
  lib['SHGetThreadRef'],
  [
    Fiddle::TYPE_VOIDP,  # ppunk : IUnknown** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "shlwapi")]
extern "system" {
    fn SHGetThreadRef(
        ppunk: *mut *mut core::ffi::c_void  // IUnknown** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHLWAPI.dll")]
public static extern int SHGetThreadRef(IntPtr ppunk);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_SHGetThreadRef' -Namespace Win32 -PassThru
# $api::SHGetThreadRef(ppunk)

#uselib "SHLWAPI.dll"
#func global SHGetThreadRef "SHGetThreadRef" sptr
; SHGetThreadRef ppunk   ; 戻り値は stat
; ppunk : IUnknown** 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 "SHLWAPI.dll"
#cfunc global SHGetThreadRef "SHGetThreadRef" sptr
; res = SHGetThreadRef(ppunk)
; ppunk : IUnknown** out -> "sptr"

; HRESULT SHGetThreadRef(IUnknown** ppunk)
#uselib "SHLWAPI.dll"
#cfunc global SHGetThreadRef "SHGetThreadRef" intptr
; res = SHGetThreadRef(ppunk)
; ppunk : IUnknown** out -> "intptr"

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

var (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procSHGetThreadRef = shlwapi.NewProc("SHGetThreadRef")
)

// ppunk (IUnknown** out)
r1, _, err := procSHGetThreadRef.Call(
	uintptr(ppunk),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function SHGetThreadRef(
  ppunk: Pointer   // IUnknown** out
): Integer; stdcall;
  external 'SHLWAPI.dll' name 'SHGetThreadRef';

result := DllCall("SHLWAPI\SHGetThreadRef"
    , "Ptr", ppunk   ; IUnknown** out
    , "Int")   ; return: HRESULT

●SHGetThreadRef(ppunk) = DLL("SHLWAPI.dll", "int SHGetThreadRef(void*)")
# 呼び出し: SHGetThreadRef(ppunk)
# ppunk : IUnknown** 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)。