GetFileVersion

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

HRESULT GetFileVersion(
    LPCWSTR szFilename,
    LPWSTR szBuffer,   // optional
    DWORD cchBuffer,
    DWORD* dwLength
);

<DllImport("MSCorEE.dll", ExactSpelling:=True)>
Public Shared Function GetFileVersion(
    <MarshalAs(UnmanagedType.LPWStr)> szFilename As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> szBuffer As System.Text.StringBuilder,   ' LPWSTR optional, out
    cchBuffer As UInteger,   ' DWORD
    ByRef dwLength As UInteger   ' DWORD* in/out
) As Integer
End Function

' szFilename : LPCWSTR
' szBuffer : LPWSTR optional, out
' cchBuffer : DWORD
' dwLength : DWORD* in/out
Declare PtrSafe Function GetFileVersion Lib "mscoree" ( _
    ByVal szFilename As LongPtr, _
    ByVal szBuffer As LongPtr, _
    ByVal cchBuffer As Long, _
    ByRef dwLength 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

GetFileVersion = ctypes.windll.mscoree.GetFileVersion
GetFileVersion.restype = ctypes.c_int
GetFileVersion.argtypes = [
    wintypes.LPCWSTR,  # szFilename : LPCWSTR
    wintypes.LPWSTR,  # szBuffer : LPWSTR optional, out
    wintypes.DWORD,  # cchBuffer : DWORD
    ctypes.POINTER(wintypes.DWORD),  # dwLength : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MSCorEE.dll')
GetFileVersion = Fiddle::Function.new(
  lib['GetFileVersion'],
  [
    Fiddle::TYPE_VOIDP,  # szFilename : LPCWSTR
    Fiddle::TYPE_VOIDP,  # szBuffer : LPWSTR optional, out
    -Fiddle::TYPE_INT,  # cchBuffer : DWORD
    Fiddle::TYPE_VOIDP,  # dwLength : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mscoree")]
extern "system" {
    fn GetFileVersion(
        szFilename: *const u16,  // LPCWSTR
        szBuffer: *mut u16,  // LPWSTR optional, out
        cchBuffer: u32,  // DWORD
        dwLength: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MSCorEE.dll")]
public static extern int GetFileVersion([MarshalAs(UnmanagedType.LPWStr)] string szFilename, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder szBuffer, uint cchBuffer, ref uint dwLength);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MSCorEE_GetFileVersion' -Namespace Win32 -PassThru
# $api::GetFileVersion(szFilename, szBuffer, cchBuffer, dwLength)

#uselib "MSCorEE.dll"
#func global GetFileVersion "GetFileVersion" sptr, sptr, sptr, sptr
; GetFileVersion szFilename, varptr(szBuffer), cchBuffer, varptr(dwLength)   ; 戻り値は stat
; szFilename : LPCWSTR -> "sptr"
; szBuffer : LPWSTR optional, out -> "sptr"
; cchBuffer : DWORD -> "sptr"
; dwLength : DWORD* in/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 "MSCorEE.dll"
#cfunc global GetFileVersion "GetFileVersion" wstr, var, int, var
; res = GetFileVersion(szFilename, szBuffer, cchBuffer, dwLength)
; szFilename : LPCWSTR -> "wstr"
; szBuffer : LPWSTR optional, out -> "var"
; cchBuffer : DWORD -> "int"
; dwLength : DWORD* in/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 GetFileVersion(LPCWSTR szFilename, LPWSTR szBuffer, DWORD cchBuffer, DWORD* dwLength)
#uselib "MSCorEE.dll"
#cfunc global GetFileVersion "GetFileVersion" wstr, var, int, var
; res = GetFileVersion(szFilename, szBuffer, cchBuffer, dwLength)
; szFilename : LPCWSTR -> "wstr"
; szBuffer : LPWSTR optional, out -> "var"
; cchBuffer : DWORD -> "int"
; dwLength : DWORD* in/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 (
	mscoree = windows.NewLazySystemDLL("MSCorEE.dll")
	procGetFileVersion = mscoree.NewProc("GetFileVersion")
)

// szFilename (LPCWSTR), szBuffer (LPWSTR optional, out), cchBuffer (DWORD), dwLength (DWORD* in/out)
r1, _, err := procGetFileVersion.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(szFilename))),
	uintptr(szBuffer),
	uintptr(cchBuffer),
	uintptr(dwLength),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function GetFileVersion(
  szFilename: PWideChar;   // LPCWSTR
  szBuffer: PWideChar;   // LPWSTR optional, out
  cchBuffer: DWORD;   // DWORD
  dwLength: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'MSCorEE.dll' name 'GetFileVersion';

result := DllCall("MSCorEE\GetFileVersion"
    , "WStr", szFilename   ; LPCWSTR
    , "Ptr", szBuffer   ; LPWSTR optional, out
    , "UInt", cchBuffer   ; DWORD
    , "Ptr", dwLength   ; DWORD* in/out
    , "Int")   ; return: HRESULT

●GetFileVersion(szFilename, szBuffer, cchBuffer, dwLength) = DLL("MSCorEE.dll", "int GetFileVersion(char*, char*, dword, void*)")
# 呼び出し: GetFileVersion(szFilename, szBuffer, cchBuffer, dwLength)
# szFilename : LPCWSTR -> "char*"
# szBuffer : LPWSTR optional, out -> "char*"
# cchBuffer : DWORD -> "dword"
# dwLength : DWORD* in/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)。