PathUnExpandEnvStringsA

// SHLWAPI.dll  (ANSI / -A)
#include <windows.h>

BOOL PathUnExpandEnvStringsA(
    LPCSTR pszPath,
    LPSTR pszBuf,
    DWORD cchBuf
);

<DllImport("SHLWAPI.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function PathUnExpandEnvStringsA(
    <MarshalAs(UnmanagedType.LPStr)> pszPath As String,   ' LPCSTR
    <MarshalAs(UnmanagedType.LPStr)> pszBuf As System.Text.StringBuilder,   ' LPSTR out
    cchBuf As UInteger   ' DWORD
) As Boolean
End Function

' pszPath : LPCSTR
' pszBuf : LPSTR out
' cchBuf : DWORD
Declare PtrSafe Function PathUnExpandEnvStringsA Lib "shlwapi" ( _
    ByVal pszPath As String, _
    ByVal pszBuf As String, _
    ByVal cchBuf 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

PathUnExpandEnvStringsA = ctypes.windll.shlwapi.PathUnExpandEnvStringsA
PathUnExpandEnvStringsA.restype = wintypes.BOOL
PathUnExpandEnvStringsA.argtypes = [
    wintypes.LPCSTR,  # pszPath : LPCSTR
    wintypes.LPSTR,  # pszBuf : LPSTR out
    wintypes.DWORD,  # cchBuf : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
PathUnExpandEnvStringsA = Fiddle::Function.new(
  lib['PathUnExpandEnvStringsA'],
  [
    Fiddle::TYPE_VOIDP,  # pszPath : LPCSTR
    Fiddle::TYPE_VOIDP,  # pszBuf : LPSTR out
    -Fiddle::TYPE_INT,  # cchBuf : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "shlwapi")]
extern "system" {
    fn PathUnExpandEnvStringsA(
        pszPath: *const u8,  // LPCSTR
        pszBuf: *mut u8,  // LPSTR out
        cchBuf: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("SHLWAPI.dll", CharSet = CharSet.Ansi)]
public static extern bool PathUnExpandEnvStringsA([MarshalAs(UnmanagedType.LPStr)] string pszPath, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pszBuf, uint cchBuf);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_PathUnExpandEnvStringsA' -Namespace Win32 -PassThru
# $api::PathUnExpandEnvStringsA(pszPath, pszBuf, cchBuf)

#uselib "SHLWAPI.dll"
#func global PathUnExpandEnvStringsA "PathUnExpandEnvStringsA" sptr, sptr, sptr
; PathUnExpandEnvStringsA pszPath, varptr(pszBuf), cchBuf   ; 戻り値は stat
; pszPath : LPCSTR -> "sptr"
; pszBuf : LPSTR out -> "sptr"
; cchBuf : DWORD -> "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 "SHLWAPI.dll"
#cfunc global PathUnExpandEnvStringsA "PathUnExpandEnvStringsA" str, var, int
; res = PathUnExpandEnvStringsA(pszPath, pszBuf, cchBuf)
; pszPath : LPCSTR -> "str"
; pszBuf : LPSTR out -> "var"
; cchBuf : DWORD -> "int"
; ※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。

; BOOL PathUnExpandEnvStringsA(LPCSTR pszPath, LPSTR pszBuf, DWORD cchBuf)
#uselib "SHLWAPI.dll"
#cfunc global PathUnExpandEnvStringsA "PathUnExpandEnvStringsA" str, var, int
; res = PathUnExpandEnvStringsA(pszPath, pszBuf, cchBuf)
; pszPath : LPCSTR -> "str"
; pszBuf : LPSTR out -> "var"
; cchBuf : DWORD -> "int"
; ※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 (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procPathUnExpandEnvStringsA = shlwapi.NewProc("PathUnExpandEnvStringsA")
)

// pszPath (LPCSTR), pszBuf (LPSTR out), cchBuf (DWORD)
r1, _, err := procPathUnExpandEnvStringsA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pszPath))),
	uintptr(pszBuf),
	uintptr(cchBuf),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function PathUnExpandEnvStringsA(
  pszPath: PAnsiChar;   // LPCSTR
  pszBuf: PAnsiChar;   // LPSTR out
  cchBuf: DWORD   // DWORD
): BOOL; stdcall;
  external 'SHLWAPI.dll' name 'PathUnExpandEnvStringsA';

result := DllCall("SHLWAPI\PathUnExpandEnvStringsA"
    , "AStr", pszPath   ; LPCSTR
    , "Ptr", pszBuf   ; LPSTR out
    , "UInt", cchBuf   ; DWORD
    , "Int")   ; return: BOOL

●PathUnExpandEnvStringsA(pszPath, pszBuf, cchBuf) = DLL("SHLWAPI.dll", "bool PathUnExpandEnvStringsA(char*, char*, dword)")
# 呼び出し: PathUnExpandEnvStringsA(pszPath, pszBuf, cchBuf)
# pszPath : LPCSTR -> "char*"
# pszBuf : LPSTR out -> "char*"
# cchBuf : DWORD -> "dword"
# 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)。