CryptGenRandom

// ADVAPI32.dll
#include <windows.h>

BOOL CryptGenRandom(
    UINT_PTR hProv,
    DWORD dwLen,
    BYTE* pbBuffer
);

<DllImport("ADVAPI32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CryptGenRandom(
    hProv As UIntPtr,   ' UINT_PTR
    dwLen As UInteger,   ' DWORD
    pbBuffer As IntPtr   ' BYTE* in/out
) As Boolean
End Function

' hProv : UINT_PTR
' dwLen : DWORD
' pbBuffer : BYTE* in/out
Declare PtrSafe Function CryptGenRandom Lib "advapi32" ( _
    ByVal hProv As LongPtr, _
    ByVal dwLen As Long, _
    ByVal pbBuffer As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CryptGenRandom = ctypes.windll.advapi32.CryptGenRandom
CryptGenRandom.restype = wintypes.BOOL
CryptGenRandom.argtypes = [
    ctypes.c_size_t,  # hProv : UINT_PTR
    wintypes.DWORD,  # dwLen : DWORD
    ctypes.POINTER(ctypes.c_ubyte),  # pbBuffer : BYTE* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
CryptGenRandom = Fiddle::Function.new(
  lib['CryptGenRandom'],
  [
    Fiddle::TYPE_UINTPTR_T,  # hProv : UINT_PTR
    -Fiddle::TYPE_INT,  # dwLen : DWORD
    Fiddle::TYPE_VOIDP,  # pbBuffer : BYTE* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "advapi32")]
extern "system" {
    fn CryptGenRandom(
        hProv: usize,  // UINT_PTR
        dwLen: u32,  // DWORD
        pbBuffer: *mut u8  // BYTE* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll", SetLastError = true)]
public static extern bool CryptGenRandom(UIntPtr hProv, uint dwLen, IntPtr pbBuffer);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_CryptGenRandom' -Namespace Win32 -PassThru
# $api::CryptGenRandom(hProv, dwLen, pbBuffer)

#uselib "ADVAPI32.dll"
#func global CryptGenRandom "CryptGenRandom" sptr, sptr, sptr
; CryptGenRandom hProv, dwLen, varptr(pbBuffer)   ; 戻り値は stat
; hProv : UINT_PTR -> "sptr"
; dwLen : DWORD -> "sptr"
; pbBuffer : BYTE* 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 "ADVAPI32.dll"
#cfunc global CryptGenRandom "CryptGenRandom" sptr, int, var
; res = CryptGenRandom(hProv, dwLen, pbBuffer)
; hProv : UINT_PTR -> "sptr"
; dwLen : DWORD -> "int"
; pbBuffer : BYTE* 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。

; BOOL CryptGenRandom(UINT_PTR hProv, DWORD dwLen, BYTE* pbBuffer)
#uselib "ADVAPI32.dll"
#cfunc global CryptGenRandom "CryptGenRandom" intptr, int, var
; res = CryptGenRandom(hProv, dwLen, pbBuffer)
; hProv : UINT_PTR -> "intptr"
; dwLen : DWORD -> "int"
; pbBuffer : BYTE* 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 (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procCryptGenRandom = advapi32.NewProc("CryptGenRandom")
)

// hProv (UINT_PTR), dwLen (DWORD), pbBuffer (BYTE* in/out)
r1, _, err := procCryptGenRandom.Call(
	uintptr(hProv),
	uintptr(dwLen),
	uintptr(pbBuffer),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CryptGenRandom(
  hProv: NativeUInt;   // UINT_PTR
  dwLen: DWORD;   // DWORD
  pbBuffer: Pointer   // BYTE* in/out
): BOOL; stdcall;
  external 'ADVAPI32.dll' name 'CryptGenRandom';

result := DllCall("ADVAPI32\CryptGenRandom"
    , "UPtr", hProv   ; UINT_PTR
    , "UInt", dwLen   ; DWORD
    , "Ptr", pbBuffer   ; BYTE* in/out
    , "Int")   ; return: BOOL

●CryptGenRandom(hProv, dwLen, pbBuffer) = DLL("ADVAPI32.dll", "bool CryptGenRandom(int, dword, void*)")
# 呼び出し: CryptGenRandom(hProv, dwLen, pbBuffer)
# hProv : UINT_PTR -> "int"
# dwLen : DWORD -> "dword"
# pbBuffer : BYTE* 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)。