HashData

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

HRESULT HashData(
    BYTE* pbData,
    DWORD cbData,
    BYTE* pbHash,
    DWORD cbHash
);

<DllImport("SHLWAPI.dll", ExactSpelling:=True)>
Public Shared Function HashData(
    pbData As IntPtr,   ' BYTE*
    cbData As UInteger,   ' DWORD
    pbHash As IntPtr,   ' BYTE* out
    cbHash As UInteger   ' DWORD
) As Integer
End Function

' pbData : BYTE*
' cbData : DWORD
' pbHash : BYTE* out
' cbHash : DWORD
Declare PtrSafe Function HashData Lib "shlwapi" ( _
    ByVal pbData As LongPtr, _
    ByVal cbData As Long, _
    ByVal pbHash As LongPtr, _
    ByVal cbHash 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

HashData = ctypes.windll.shlwapi.HashData
HashData.restype = ctypes.c_int
HashData.argtypes = [
    ctypes.POINTER(ctypes.c_ubyte),  # pbData : BYTE*
    wintypes.DWORD,  # cbData : DWORD
    ctypes.POINTER(ctypes.c_ubyte),  # pbHash : BYTE* out
    wintypes.DWORD,  # cbHash : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
HashData = Fiddle::Function.new(
  lib['HashData'],
  [
    Fiddle::TYPE_VOIDP,  # pbData : BYTE*
    -Fiddle::TYPE_INT,  # cbData : DWORD
    Fiddle::TYPE_VOIDP,  # pbHash : BYTE* out
    -Fiddle::TYPE_INT,  # cbHash : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "shlwapi")]
extern "system" {
    fn HashData(
        pbData: *mut u8,  // BYTE*
        cbData: u32,  // DWORD
        pbHash: *mut u8,  // BYTE* out
        cbHash: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHLWAPI.dll")]
public static extern int HashData(IntPtr pbData, uint cbData, IntPtr pbHash, uint cbHash);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_HashData' -Namespace Win32 -PassThru
# $api::HashData(pbData, cbData, pbHash, cbHash)

#uselib "SHLWAPI.dll"
#func global HashData "HashData" sptr, sptr, sptr, sptr
; HashData varptr(pbData), cbData, varptr(pbHash), cbHash   ; 戻り値は stat
; pbData : BYTE* -> "sptr"
; cbData : DWORD -> "sptr"
; pbHash : BYTE* out -> "sptr"
; cbHash : 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 HashData "HashData" var, int, var, int
; res = HashData(pbData, cbData, pbHash, cbHash)
; pbData : BYTE* -> "var"
; cbData : DWORD -> "int"
; pbHash : BYTE* out -> "var"
; cbHash : 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。

; HRESULT HashData(BYTE* pbData, DWORD cbData, BYTE* pbHash, DWORD cbHash)
#uselib "SHLWAPI.dll"
#cfunc global HashData "HashData" var, int, var, int
; res = HashData(pbData, cbData, pbHash, cbHash)
; pbData : BYTE* -> "var"
; cbData : DWORD -> "int"
; pbHash : BYTE* out -> "var"
; cbHash : 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")
	procHashData = shlwapi.NewProc("HashData")
)

// pbData (BYTE*), cbData (DWORD), pbHash (BYTE* out), cbHash (DWORD)
r1, _, err := procHashData.Call(
	uintptr(pbData),
	uintptr(cbData),
	uintptr(pbHash),
	uintptr(cbHash),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function HashData(
  pbData: Pointer;   // BYTE*
  cbData: DWORD;   // DWORD
  pbHash: Pointer;   // BYTE* out
  cbHash: DWORD   // DWORD
): Integer; stdcall;
  external 'SHLWAPI.dll' name 'HashData';

result := DllCall("SHLWAPI\HashData"
    , "Ptr", pbData   ; BYTE*
    , "UInt", cbData   ; DWORD
    , "Ptr", pbHash   ; BYTE* out
    , "UInt", cbHash   ; DWORD
    , "Int")   ; return: HRESULT

●HashData(pbData, cbData, pbHash, cbHash) = DLL("SHLWAPI.dll", "int HashData(void*, dword, void*, dword)")
# 呼び出し: HashData(pbData, cbData, pbHash, cbHash)
# pbData : BYTE* -> "void*"
# cbData : DWORD -> "dword"
# pbHash : BYTE* out -> "void*"
# cbHash : 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)。