SetConvertStg

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

HRESULT SetConvertStg(
    IStorage* pStg,
    BOOL fConvert
);

<DllImport("OLE32.dll", ExactSpelling:=True)>
Public Shared Function SetConvertStg(
    pStg As IntPtr,   ' IStorage*
    fConvert As Boolean   ' BOOL
) As Integer
End Function

' pStg : IStorage*
' fConvert : BOOL
Declare PtrSafe Function SetConvertStg Lib "ole32" ( _
    ByVal pStg As LongPtr, _
    ByVal fConvert As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SetConvertStg = ctypes.windll.ole32.SetConvertStg
SetConvertStg.restype = ctypes.c_int
SetConvertStg.argtypes = [
    ctypes.c_void_p,  # pStg : IStorage*
    wintypes.BOOL,  # fConvert : BOOL
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLE32.dll')
SetConvertStg = Fiddle::Function.new(
  lib['SetConvertStg'],
  [
    Fiddle::TYPE_VOIDP,  # pStg : IStorage*
    Fiddle::TYPE_INT,  # fConvert : BOOL
  ],
  Fiddle::TYPE_INT)

#[link(name = "ole32")]
extern "system" {
    fn SetConvertStg(
        pStg: *mut core::ffi::c_void,  // IStorage*
        fConvert: i32  // BOOL
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLE32.dll")]
public static extern int SetConvertStg(IntPtr pStg, bool fConvert);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLE32_SetConvertStg' -Namespace Win32 -PassThru
# $api::SetConvertStg(pStg, fConvert)

#uselib "OLE32.dll"
#func global SetConvertStg "SetConvertStg" sptr, sptr
; SetConvertStg pStg, fConvert   ; 戻り値は stat
; pStg : IStorage* -> "sptr"
; fConvert : BOOL -> "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 SetConvertStg "SetConvertStg" sptr, int
; res = SetConvertStg(pStg, fConvert)
; pStg : IStorage* -> "sptr"
; fConvert : BOOL -> "int"

; HRESULT SetConvertStg(IStorage* pStg, BOOL fConvert)
#uselib "OLE32.dll"
#cfunc global SetConvertStg "SetConvertStg" intptr, int
; res = SetConvertStg(pStg, fConvert)
; pStg : IStorage* -> "intptr"
; fConvert : BOOL -> "int"

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

var (
	ole32 = windows.NewLazySystemDLL("OLE32.dll")
	procSetConvertStg = ole32.NewProc("SetConvertStg")
)

// pStg (IStorage*), fConvert (BOOL)
r1, _, err := procSetConvertStg.Call(
	uintptr(pStg),
	uintptr(fConvert),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function SetConvertStg(
  pStg: Pointer;   // IStorage*
  fConvert: BOOL   // BOOL
): Integer; stdcall;
  external 'OLE32.dll' name 'SetConvertStg';

result := DllCall("OLE32\SetConvertStg"
    , "Ptr", pStg   ; IStorage*
    , "Int", fConvert   ; BOOL
    , "Int")   ; return: HRESULT

●SetConvertStg(pStg, fConvert) = DLL("OLE32.dll", "int SetConvertStg(void*, bool)")
# 呼び出し: SetConvertStg(pStg, fConvert)
# pStg : IStorage* -> "void*"
# fConvert : BOOL -> "bool"
# 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)。