VarI1FromCy

// OLEAUT32.dll
#include <windows.h>

HRESULT VarI1FromCy(
    CY cyIn,
    LPSTR pcOut
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function VarI1FromCy(
    cyIn As CY,   ' CY
    <MarshalAs(UnmanagedType.LPStr)> pcOut As System.Text.StringBuilder   ' LPSTR out
) As Integer
End Function

' cyIn : CY
' pcOut : LPSTR out
Declare PtrSafe Function VarI1FromCy Lib "oleaut32" ( _
    ByVal cyIn As LongPtr, _
    ByVal pcOut As String) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

VarI1FromCy = ctypes.windll.oleaut32.VarI1FromCy
VarI1FromCy.restype = ctypes.c_int
VarI1FromCy.argtypes = [
    CY,  # cyIn : CY
    wintypes.LPSTR,  # pcOut : LPSTR out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
VarI1FromCy = Fiddle::Function.new(
  lib['VarI1FromCy'],
  [
    Fiddle::TYPE_VOIDP,  # cyIn : CY
    Fiddle::TYPE_VOIDP,  # pcOut : LPSTR out
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn VarI1FromCy(
        cyIn: CY,  // CY
        pcOut: *mut u8  // LPSTR out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int VarI1FromCy(CY cyIn, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pcOut);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_VarI1FromCy' -Namespace Win32 -PassThru
# $api::VarI1FromCy(cyIn, pcOut)

#uselib "OLEAUT32.dll"
#func global VarI1FromCy "VarI1FromCy" sptr, sptr
; VarI1FromCy cyIn, varptr(pcOut)   ; 戻り値は stat
; cyIn : CY -> "sptr"
; pcOut : LPSTR out -> "sptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 "OLEAUT32.dll"
#cfunc global VarI1FromCy "VarI1FromCy" int, var
; res = VarI1FromCy(cyIn, pcOut)
; cyIn : CY -> "int"
; pcOut : LPSTR out -> "var"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 VarI1FromCy(CY cyIn, LPSTR pcOut)
#uselib "OLEAUT32.dll"
#cfunc global VarI1FromCy "VarI1FromCy" int, var
; res = VarI1FromCy(cyIn, pcOut)
; cyIn : CY -> "int"
; pcOut : LPSTR out -> "var"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 (
	oleaut32 = windows.NewLazySystemDLL("OLEAUT32.dll")
	procVarI1FromCy = oleaut32.NewProc("VarI1FromCy")
)

// cyIn (CY), pcOut (LPSTR out)
r1, _, err := procVarI1FromCy.Call(
	uintptr(cyIn),
	uintptr(pcOut),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function VarI1FromCy(
  cyIn: CY;   // CY
  pcOut: PAnsiChar   // LPSTR out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'VarI1FromCy';

result := DllCall("OLEAUT32\VarI1FromCy"
    , "Ptr", cyIn   ; CY
    , "Ptr", pcOut   ; LPSTR out
    , "Int")   ; return: HRESULT

●VarI1FromCy(cyIn, pcOut) = DLL("OLEAUT32.dll", "int VarI1FromCy(void*, char*)")
# 呼び出し: VarI1FromCy(cyIn, pcOut)
# cyIn : CY -> "void*"
# pcOut : LPSTR out -> "char*"
# 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)。