CoGetCancelObject

// OLE32.dll
#include <windows.h>

HRESULT CoGetCancelObject(
    DWORD dwThreadId,
    const GUID* iid,
    void** ppUnk
);

<DllImport("OLE32.dll", ExactSpelling:=True)>
Public Shared Function CoGetCancelObject(
    dwThreadId As UInteger,   ' DWORD
    ByRef iid As Guid,   ' GUID*
    ppUnk As IntPtr   ' void** out
) As Integer
End Function

' dwThreadId : DWORD
' iid : GUID*
' ppUnk : void** out
Declare PtrSafe Function CoGetCancelObject Lib "ole32" ( _
    ByVal dwThreadId As Long, _
    ByVal iid As LongPtr, _
    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

CoGetCancelObject = ctypes.windll.ole32.CoGetCancelObject
CoGetCancelObject.restype = ctypes.c_int
CoGetCancelObject.argtypes = [
    wintypes.DWORD,  # dwThreadId : DWORD
    ctypes.c_void_p,  # iid : GUID*
    ctypes.c_void_p,  # ppUnk : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLE32.dll')
CoGetCancelObject = Fiddle::Function.new(
  lib['CoGetCancelObject'],
  [
    -Fiddle::TYPE_INT,  # dwThreadId : DWORD
    Fiddle::TYPE_VOIDP,  # iid : GUID*
    Fiddle::TYPE_VOIDP,  # ppUnk : void** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "ole32")]
extern "system" {
    fn CoGetCancelObject(
        dwThreadId: u32,  // DWORD
        iid: *const GUID,  // GUID*
        ppUnk: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLE32.dll")]
public static extern int CoGetCancelObject(uint dwThreadId, ref Guid iid, IntPtr ppUnk);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLE32_CoGetCancelObject' -Namespace Win32 -PassThru
# $api::CoGetCancelObject(dwThreadId, iid, ppUnk)

#uselib "OLE32.dll"
#func global CoGetCancelObject "CoGetCancelObject" sptr, sptr, sptr
; CoGetCancelObject dwThreadId, varptr(iid), ppUnk   ; 戻り値は stat
; dwThreadId : DWORD -> "sptr"
; iid : GUID* -> "sptr"
; ppUnk : void** 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 "OLE32.dll"
#cfunc global CoGetCancelObject "CoGetCancelObject" int, var, sptr
; res = CoGetCancelObject(dwThreadId, iid, ppUnk)
; dwThreadId : DWORD -> "int"
; iid : GUID* -> "var"
; ppUnk : void** out -> "sptr"
; ※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 CoGetCancelObject(DWORD dwThreadId, GUID* iid, void** ppUnk)
#uselib "OLE32.dll"
#cfunc global CoGetCancelObject "CoGetCancelObject" int, var, intptr
; res = CoGetCancelObject(dwThreadId, iid, ppUnk)
; dwThreadId : DWORD -> "int"
; iid : GUID* -> "var"
; ppUnk : void** out -> "intptr"
; ※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 (
	ole32 = windows.NewLazySystemDLL("OLE32.dll")
	procCoGetCancelObject = ole32.NewProc("CoGetCancelObject")
)

// dwThreadId (DWORD), iid (GUID*), ppUnk (void** out)
r1, _, err := procCoGetCancelObject.Call(
	uintptr(dwThreadId),
	uintptr(iid),
	uintptr(ppUnk),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function CoGetCancelObject(
  dwThreadId: DWORD;   // DWORD
  iid: PGUID;   // GUID*
  ppUnk: Pointer   // void** out
): Integer; stdcall;
  external 'OLE32.dll' name 'CoGetCancelObject';

result := DllCall("OLE32\CoGetCancelObject"
    , "UInt", dwThreadId   ; DWORD
    , "Ptr", iid   ; GUID*
    , "Ptr", ppUnk   ; void** out
    , "Int")   ; return: HRESULT

●CoGetCancelObject(dwThreadId, iid, ppUnk) = DLL("OLE32.dll", "int CoGetCancelObject(dword, void*, void*)")
# 呼び出し: CoGetCancelObject(dwThreadId, iid, ppUnk)
# dwThreadId : DWORD -> "dword"
# iid : GUID* -> "void*"
# ppUnk : void** 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)。