InitVariantFromGUIDAsString

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

HRESULT InitVariantFromGUIDAsString(
    const GUID* guid,
    VARIANT* pvar
);

<DllImport("PROPSYS.dll", ExactSpelling:=True)>
Public Shared Function InitVariantFromGUIDAsString(
    ByRef guid As Guid,   ' GUID*
    pvar As IntPtr   ' VARIANT* out
) As Integer
End Function

' guid : GUID*
' pvar : VARIANT* out
Declare PtrSafe Function InitVariantFromGUIDAsString Lib "propsys" ( _
    ByVal guid As LongPtr, _
    ByVal pvar 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

InitVariantFromGUIDAsString = ctypes.windll.propsys.InitVariantFromGUIDAsString
InitVariantFromGUIDAsString.restype = ctypes.c_int
InitVariantFromGUIDAsString.argtypes = [
    ctypes.c_void_p,  # guid : GUID*
    ctypes.c_void_p,  # pvar : VARIANT* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PROPSYS.dll')
InitVariantFromGUIDAsString = Fiddle::Function.new(
  lib['InitVariantFromGUIDAsString'],
  [
    Fiddle::TYPE_VOIDP,  # guid : GUID*
    Fiddle::TYPE_VOIDP,  # pvar : VARIANT* out
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("PROPSYS.dll")]
public static extern int InitVariantFromGUIDAsString(ref Guid guid, IntPtr pvar);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PROPSYS_InitVariantFromGUIDAsString' -Namespace Win32 -PassThru
# $api::InitVariantFromGUIDAsString(guid, pvar)

#uselib "PROPSYS.dll"
#func global InitVariantFromGUIDAsString "InitVariantFromGUIDAsString" sptr, sptr
; InitVariantFromGUIDAsString varptr(guid), varptr(pvar)   ; 戻り値は stat
; guid : GUID* -> "sptr"
; pvar : VARIANT* 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 "PROPSYS.dll"
#cfunc global InitVariantFromGUIDAsString "InitVariantFromGUIDAsString" var, var
; res = InitVariantFromGUIDAsString(guid, pvar)
; guid : GUID* -> "var"
; pvar : VARIANT* 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 InitVariantFromGUIDAsString(GUID* guid, VARIANT* pvar)
#uselib "PROPSYS.dll"
#cfunc global InitVariantFromGUIDAsString "InitVariantFromGUIDAsString" var, var
; res = InitVariantFromGUIDAsString(guid, pvar)
; guid : GUID* -> "var"
; pvar : VARIANT* 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 (
	propsys = windows.NewLazySystemDLL("PROPSYS.dll")
	procInitVariantFromGUIDAsString = propsys.NewProc("InitVariantFromGUIDAsString")
)

// guid (GUID*), pvar (VARIANT* out)
r1, _, err := procInitVariantFromGUIDAsString.Call(
	uintptr(guid),
	uintptr(pvar),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function InitVariantFromGUIDAsString(
  guid: PGUID;   // GUID*
  pvar: Pointer   // VARIANT* out
): Integer; stdcall;
  external 'PROPSYS.dll' name 'InitVariantFromGUIDAsString';

result := DllCall("PROPSYS\InitVariantFromGUIDAsString"
    , "Ptr", guid   ; GUID*
    , "Ptr", pvar   ; VARIANT* out
    , "Int")   ; return: HRESULT

●InitVariantFromGUIDAsString(guid, pvar) = DLL("PROPSYS.dll", "int InitVariantFromGUIDAsString(void*, void*)")
# 呼び出し: InitVariantFromGUIDAsString(guid, pvar)
# guid : GUID* -> "void*"
# pvar : VARIANT* 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)。