CoGetCallContext

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

HRESULT CoGetCallContext(
    const GUID* riid,
    void** ppInterface
);

<DllImport("OLE32.dll", ExactSpelling:=True)>
Public Shared Function CoGetCallContext(
    ByRef riid As Guid,   ' GUID*
    ppInterface As IntPtr   ' void** out
) As Integer
End Function

' riid : GUID*
' ppInterface : void** out
Declare PtrSafe Function CoGetCallContext Lib "ole32" ( _
    ByVal riid As LongPtr, _
    ByVal ppInterface 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

CoGetCallContext = ctypes.windll.ole32.CoGetCallContext
CoGetCallContext.restype = ctypes.c_int
CoGetCallContext.argtypes = [
    ctypes.c_void_p,  # riid : GUID*
    ctypes.c_void_p,  # ppInterface : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLE32.dll')
CoGetCallContext = Fiddle::Function.new(
  lib['CoGetCallContext'],
  [
    Fiddle::TYPE_VOIDP,  # riid : GUID*
    Fiddle::TYPE_VOIDP,  # ppInterface : void** out
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("OLE32.dll")]
public static extern int CoGetCallContext(ref Guid riid, IntPtr ppInterface);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLE32_CoGetCallContext' -Namespace Win32 -PassThru
# $api::CoGetCallContext(riid, ppInterface)

#uselib "OLE32.dll"
#func global CoGetCallContext "CoGetCallContext" sptr, sptr
; CoGetCallContext varptr(riid), ppInterface   ; 戻り値は stat
; riid : GUID* -> "sptr"
; ppInterface : 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 CoGetCallContext "CoGetCallContext" var, sptr
; res = CoGetCallContext(riid, ppInterface)
; riid : GUID* -> "var"
; ppInterface : 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 CoGetCallContext(GUID* riid, void** ppInterface)
#uselib "OLE32.dll"
#cfunc global CoGetCallContext "CoGetCallContext" var, intptr
; res = CoGetCallContext(riid, ppInterface)
; riid : GUID* -> "var"
; ppInterface : 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")
	procCoGetCallContext = ole32.NewProc("CoGetCallContext")
)

// riid (GUID*), ppInterface (void** out)
r1, _, err := procCoGetCallContext.Call(
	uintptr(riid),
	uintptr(ppInterface),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function CoGetCallContext(
  riid: PGUID;   // GUID*
  ppInterface: Pointer   // void** out
): Integer; stdcall;
  external 'OLE32.dll' name 'CoGetCallContext';

result := DllCall("OLE32\CoGetCallContext"
    , "Ptr", riid   ; GUID*
    , "Ptr", ppInterface   ; void** out
    , "Int")   ; return: HRESULT

●CoGetCallContext(riid, ppInterface) = DLL("OLE32.dll", "int CoGetCallContext(void*, void*)")
# 呼び出し: CoGetCallContext(riid, ppInterface)
# riid : GUID* -> "void*"
# ppInterface : 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)。