CryptSetProviderExW

// ADVAPI32.dll  (Unicode / -W)
#include <windows.h>

BOOL CryptSetProviderExW(
    LPCWSTR pszProvName,
    DWORD dwProvType,
    DWORD* pdwReserved,   // optional
    DWORD dwFlags
);

<DllImport("ADVAPI32.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CryptSetProviderExW(
    <MarshalAs(UnmanagedType.LPWStr)> pszProvName As String,   ' LPCWSTR
    dwProvType As UInteger,   ' DWORD
    pdwReserved As IntPtr,   ' DWORD* optional
    dwFlags As UInteger   ' DWORD
) As Boolean
End Function

' pszProvName : LPCWSTR
' dwProvType : DWORD
' pdwReserved : DWORD* optional
' dwFlags : DWORD
Declare PtrSafe Function CryptSetProviderExW Lib "advapi32" ( _
    ByVal pszProvName As LongPtr, _
    ByVal dwProvType As Long, _
    ByVal pdwReserved As LongPtr, _
    ByVal dwFlags As Long) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CryptSetProviderExW = ctypes.windll.advapi32.CryptSetProviderExW
CryptSetProviderExW.restype = wintypes.BOOL
CryptSetProviderExW.argtypes = [
    wintypes.LPCWSTR,  # pszProvName : LPCWSTR
    wintypes.DWORD,  # dwProvType : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pdwReserved : DWORD* optional
    wintypes.DWORD,  # dwFlags : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
CryptSetProviderExW = Fiddle::Function.new(
  lib['CryptSetProviderExW'],
  [
    Fiddle::TYPE_VOIDP,  # pszProvName : LPCWSTR
    -Fiddle::TYPE_INT,  # dwProvType : DWORD
    Fiddle::TYPE_VOIDP,  # pdwReserved : DWORD* optional
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "advapi32")]
extern "system" {
    fn CryptSetProviderExW(
        pszProvName: *const u16,  // LPCWSTR
        dwProvType: u32,  // DWORD
        pdwReserved: *mut u32,  // DWORD* optional
        dwFlags: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern bool CryptSetProviderExW([MarshalAs(UnmanagedType.LPWStr)] string pszProvName, uint dwProvType, IntPtr pdwReserved, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_CryptSetProviderExW' -Namespace Win32 -PassThru
# $api::CryptSetProviderExW(pszProvName, dwProvType, pdwReserved, dwFlags)

#uselib "ADVAPI32.dll"
#func global CryptSetProviderExW "CryptSetProviderExW" wptr, wptr, wptr, wptr
; CryptSetProviderExW pszProvName, dwProvType, varptr(pdwReserved), dwFlags   ; 戻り値は stat
; pszProvName : LPCWSTR -> "wptr"
; dwProvType : DWORD -> "wptr"
; pdwReserved : DWORD* optional -> "wptr"
; dwFlags : DWORD -> "wptr"
; ※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 "ADVAPI32.dll"
#cfunc global CryptSetProviderExW "CryptSetProviderExW" wstr, int, var, int
; res = CryptSetProviderExW(pszProvName, dwProvType, pdwReserved, dwFlags)
; pszProvName : LPCWSTR -> "wstr"
; dwProvType : DWORD -> "int"
; pdwReserved : DWORD* optional -> "var"
; dwFlags : 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 CryptSetProviderExW(LPCWSTR pszProvName, DWORD dwProvType, DWORD* pdwReserved, DWORD dwFlags)
#uselib "ADVAPI32.dll"
#cfunc global CryptSetProviderExW "CryptSetProviderExW" wstr, int, var, int
; res = CryptSetProviderExW(pszProvName, dwProvType, pdwReserved, dwFlags)
; pszProvName : LPCWSTR -> "wstr"
; dwProvType : DWORD -> "int"
; pdwReserved : DWORD* optional -> "var"
; dwFlags : 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 (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procCryptSetProviderExW = advapi32.NewProc("CryptSetProviderExW")
)

// pszProvName (LPCWSTR), dwProvType (DWORD), pdwReserved (DWORD* optional), dwFlags (DWORD)
r1, _, err := procCryptSetProviderExW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszProvName))),
	uintptr(dwProvType),
	uintptr(pdwReserved),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CryptSetProviderExW(
  pszProvName: PWideChar;   // LPCWSTR
  dwProvType: DWORD;   // DWORD
  pdwReserved: Pointer;   // DWORD* optional
  dwFlags: DWORD   // DWORD
): BOOL; stdcall;
  external 'ADVAPI32.dll' name 'CryptSetProviderExW';

result := DllCall("ADVAPI32\CryptSetProviderExW"
    , "WStr", pszProvName   ; LPCWSTR
    , "UInt", dwProvType   ; DWORD
    , "Ptr", pdwReserved   ; DWORD* optional
    , "UInt", dwFlags   ; DWORD
    , "Int")   ; return: BOOL

●CryptSetProviderExW(pszProvName, dwProvType, pdwReserved, dwFlags) = DLL("ADVAPI32.dll", "bool CryptSetProviderExW(char*, dword, void*, dword)")
# 呼び出し: CryptSetProviderExW(pszProvName, dwProvType, pdwReserved, dwFlags)
# pszProvName : LPCWSTR -> "char*"
# dwProvType : DWORD -> "dword"
# pdwReserved : DWORD* optional -> "void*"
# dwFlags : 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。