CoGetTreatAsClass

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

HRESULT CoGetTreatAsClass(
    const GUID* clsidOld,
    GUID* pClsidNew
);

<DllImport("OLE32.dll", ExactSpelling:=True)>
Public Shared Function CoGetTreatAsClass(
    ByRef clsidOld As Guid,   ' GUID*
    <Out> ByRef pClsidNew As Guid   ' GUID* out
) As Integer
End Function

' clsidOld : GUID*
' pClsidNew : GUID* out
Declare PtrSafe Function CoGetTreatAsClass Lib "ole32" ( _
    ByVal clsidOld As LongPtr, _
    ByVal pClsidNew 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

CoGetTreatAsClass = ctypes.windll.ole32.CoGetTreatAsClass
CoGetTreatAsClass.restype = ctypes.c_int
CoGetTreatAsClass.argtypes = [
    ctypes.c_void_p,  # clsidOld : GUID*
    ctypes.c_void_p,  # pClsidNew : GUID* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLE32.dll')
CoGetTreatAsClass = Fiddle::Function.new(
  lib['CoGetTreatAsClass'],
  [
    Fiddle::TYPE_VOIDP,  # clsidOld : GUID*
    Fiddle::TYPE_VOIDP,  # pClsidNew : GUID* out
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("OLE32.dll")]
public static extern int CoGetTreatAsClass(ref Guid clsidOld, out Guid pClsidNew);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLE32_CoGetTreatAsClass' -Namespace Win32 -PassThru
# $api::CoGetTreatAsClass(clsidOld, pClsidNew)

#uselib "OLE32.dll"
#func global CoGetTreatAsClass "CoGetTreatAsClass" sptr, sptr
; CoGetTreatAsClass varptr(clsidOld), varptr(pClsidNew)   ; 戻り値は stat
; clsidOld : GUID* -> "sptr"
; pClsidNew : GUID* 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 CoGetTreatAsClass "CoGetTreatAsClass" var, var
; res = CoGetTreatAsClass(clsidOld, pClsidNew)
; clsidOld : GUID* -> "var"
; pClsidNew : GUID* 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 CoGetTreatAsClass(GUID* clsidOld, GUID* pClsidNew)
#uselib "OLE32.dll"
#cfunc global CoGetTreatAsClass "CoGetTreatAsClass" var, var
; res = CoGetTreatAsClass(clsidOld, pClsidNew)
; clsidOld : GUID* -> "var"
; pClsidNew : GUID* 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 (
	ole32 = windows.NewLazySystemDLL("OLE32.dll")
	procCoGetTreatAsClass = ole32.NewProc("CoGetTreatAsClass")
)

// clsidOld (GUID*), pClsidNew (GUID* out)
r1, _, err := procCoGetTreatAsClass.Call(
	uintptr(clsidOld),
	uintptr(pClsidNew),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function CoGetTreatAsClass(
  clsidOld: PGUID;   // GUID*
  pClsidNew: PGUID   // GUID* out
): Integer; stdcall;
  external 'OLE32.dll' name 'CoGetTreatAsClass';

result := DllCall("OLE32\CoGetTreatAsClass"
    , "Ptr", clsidOld   ; GUID*
    , "Ptr", pClsidNew   ; GUID* out
    , "Int")   ; return: HRESULT

●CoGetTreatAsClass(clsidOld, pClsidNew) = DLL("OLE32.dll", "int CoGetTreatAsClass(void*, void*)")
# 呼び出し: CoGetTreatAsClass(clsidOld, pClsidNew)
# clsidOld : GUID* -> "void*"
# pClsidNew : GUID* 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)。