SymEnumProcesses

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

BOOL SymEnumProcesses(
    PSYM_ENUMPROCESSES_CALLBACK EnumProcessesCallback,
    void* UserContext
);

<DllImport("dbghelp.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SymEnumProcesses(
    EnumProcessesCallback As IntPtr,   ' PSYM_ENUMPROCESSES_CALLBACK
    UserContext As IntPtr   ' void*
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' EnumProcessesCallback : PSYM_ENUMPROCESSES_CALLBACK
' UserContext : void*
Declare PtrSafe Function SymEnumProcesses Lib "dbghelp" ( _
    ByVal EnumProcessesCallback As LongPtr, _
    ByVal UserContext 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

SymEnumProcesses = ctypes.windll.dbghelp.SymEnumProcesses
SymEnumProcesses.restype = wintypes.BOOL
SymEnumProcesses.argtypes = [
    ctypes.c_void_p,  # EnumProcessesCallback : PSYM_ENUMPROCESSES_CALLBACK
    ctypes.POINTER(None),  # UserContext : void*
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('dbghelp.dll')
SymEnumProcesses = Fiddle::Function.new(
  lib['SymEnumProcesses'],
  [
    Fiddle::TYPE_VOIDP,  # EnumProcessesCallback : PSYM_ENUMPROCESSES_CALLBACK
    Fiddle::TYPE_VOIDP,  # UserContext : void*
  ],
  Fiddle::TYPE_INT)

#[link(name = "dbghelp")]
extern "system" {
    fn SymEnumProcesses(
        EnumProcessesCallback: *const core::ffi::c_void,  // PSYM_ENUMPROCESSES_CALLBACK
        UserContext: *mut ()  // void*
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("dbghelp.dll", SetLastError = true)]
public static extern bool SymEnumProcesses(IntPtr EnumProcessesCallback, IntPtr UserContext);
"@
$api = Add-Type -MemberDefinition $sig -Name 'dbghelp_SymEnumProcesses' -Namespace Win32 -PassThru
# $api::SymEnumProcesses(EnumProcessesCallback, UserContext)

#uselib "dbghelp.dll"
#func global SymEnumProcesses "SymEnumProcesses" sptr, sptr
; SymEnumProcesses EnumProcessesCallback, UserContext   ; 戻り値は stat
; EnumProcessesCallback : PSYM_ENUMPROCESSES_CALLBACK -> "sptr"
; UserContext : void* -> "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 "dbghelp.dll"
#cfunc global SymEnumProcesses "SymEnumProcesses" sptr, sptr
; res = SymEnumProcesses(EnumProcessesCallback, UserContext)
; EnumProcessesCallback : PSYM_ENUMPROCESSES_CALLBACK -> "sptr"
; UserContext : void* -> "sptr"

; BOOL SymEnumProcesses(PSYM_ENUMPROCESSES_CALLBACK EnumProcessesCallback, void* UserContext)
#uselib "dbghelp.dll"
#cfunc global SymEnumProcesses "SymEnumProcesses" intptr, intptr
; res = SymEnumProcesses(EnumProcessesCallback, UserContext)
; EnumProcessesCallback : PSYM_ENUMPROCESSES_CALLBACK -> "intptr"
; UserContext : void* -> "intptr"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	dbghelp = windows.NewLazySystemDLL("dbghelp.dll")
	procSymEnumProcesses = dbghelp.NewProc("SymEnumProcesses")
)

// EnumProcessesCallback (PSYM_ENUMPROCESSES_CALLBACK), UserContext (void*)
r1, _, err := procSymEnumProcesses.Call(
	uintptr(EnumProcessesCallback),
	uintptr(UserContext),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SymEnumProcesses(
  EnumProcessesCallback: Pointer;   // PSYM_ENUMPROCESSES_CALLBACK
  UserContext: Pointer   // void*
): BOOL; stdcall;
  external 'dbghelp.dll' name 'SymEnumProcesses';

result := DllCall("dbghelp\SymEnumProcesses"
    , "Ptr", EnumProcessesCallback   ; PSYM_ENUMPROCESSES_CALLBACK
    , "Ptr", UserContext   ; void*
    , "Int")   ; return: BOOL

●SymEnumProcesses(EnumProcessesCallback, UserContext) = DLL("dbghelp.dll", "bool SymEnumProcesses(void*, void*)")
# 呼び出し: SymEnumProcesses(EnumProcessesCallback, UserContext)
# EnumProcessesCallback : PSYM_ENUMPROCESSES_CALLBACK -> "void*"
# UserContext : void* -> "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)。

const std = @import("std");

extern "dbghelp" fn SymEnumProcesses(
    EnumProcessesCallback: ?*anyopaque, // PSYM_ENUMPROCESSES_CALLBACK
    UserContext: ?*anyopaque // void*
) callconv(std.os.windows.WINAPI) i32;

proc SymEnumProcesses(
    EnumProcessesCallback: pointer,  # PSYM_ENUMPROCESSES_CALLBACK
    UserContext: pointer  # void*
): int32 {.importc: "SymEnumProcesses", stdcall, dynlib: "dbghelp.dll".}

pragma(lib, "dbghelp");
extern(Windows)
int SymEnumProcesses(
    void* EnumProcessesCallback,   // PSYM_ENUMPROCESSES_CALLBACK
    void* UserContext   // void*
);

ccall((:SymEnumProcesses, "dbghelp.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{Cvoid}),
      EnumProcessesCallback, UserContext)
# EnumProcessesCallback : PSYM_ENUMPROCESSES_CALLBACK -> Ptr{Cvoid}
# UserContext : void* -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t SymEnumProcesses(
    void* EnumProcessesCallback,
    void* UserContext);
]]
local dbghelp = ffi.load("dbghelp")
-- dbghelp.SymEnumProcesses(EnumProcessesCallback, UserContext)
-- EnumProcessesCallback : PSYM_ENUMPROCESSES_CALLBACK
-- UserContext : void*
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('dbghelp.dll');
const SymEnumProcesses = lib.func('__stdcall', 'SymEnumProcesses', 'int32_t', ['void *', 'void *']);
// SymEnumProcesses(EnumProcessesCallback, UserContext)
// EnumProcessesCallback : PSYM_ENUMPROCESSES_CALLBACK -> 'void *'
// UserContext : void* -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。
// コールバック(関数ポインタ)は koffi.proto/koffi.register で型を定義して渡す(素の void* では JS 関数を渡せない)。

const lib = Deno.dlopen("dbghelp.dll", {
  SymEnumProcesses: { parameters: ["pointer", "pointer"], result: "i32" },
});
// lib.symbols.SymEnumProcesses(EnumProcessesCallback, UserContext)
// EnumProcessesCallback : PSYM_ENUMPROCESSES_CALLBACK -> "pointer"
// UserContext : void* -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t SymEnumProcesses(
    void* EnumProcessesCallback,
    void* UserContext);
C, "dbghelp.dll");
// $ffi->SymEnumProcesses(EnumProcessesCallback, UserContext);
// EnumProcessesCallback : PSYM_ENUMPROCESSES_CALLBACK
// UserContext : void*
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Dbghelp extends StdCallLibrary {
    Dbghelp INSTANCE = Native.load("dbghelp", Dbghelp.class);
    boolean SymEnumProcesses(
        Callback EnumProcessesCallback,   // PSYM_ENUMPROCESSES_CALLBACK
        Pointer UserContext   // void*
    );
}

@[Link("dbghelp")]
lib Libdbghelp
  fun SymEnumProcesses = SymEnumProcesses(
    EnumProcessesCallback : Void*,   # PSYM_ENUMPROCESSES_CALLBACK
    UserContext : Void*   # void*
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef SymEnumProcessesNative = Int32 Function(Pointer<Void>, Pointer<Void>);
typedef SymEnumProcessesDart = int Function(Pointer<Void>, Pointer<Void>);
final SymEnumProcesses = DynamicLibrary.open('dbghelp.dll')
    .lookupFunction<SymEnumProcessesNative, SymEnumProcessesDart>('SymEnumProcesses');
// EnumProcessesCallback : PSYM_ENUMPROCESSES_CALLBACK -> Pointer<Void>
// UserContext : void* -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SymEnumProcesses(
  EnumProcessesCallback: Pointer;   // PSYM_ENUMPROCESSES_CALLBACK
  UserContext: Pointer   // void*
): BOOL; stdcall;
  external 'dbghelp.dll' name 'SymEnumProcesses';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "SymEnumProcesses"
  c_SymEnumProcesses :: Ptr () -> Ptr () -> IO CInt
-- EnumProcessesCallback : PSYM_ENUMPROCESSES_CALLBACK -> Ptr ()
-- UserContext : void* -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let symenumprocesses =
  foreign "SymEnumProcesses"
    ((ptr void) @-> (ptr void) @-> returning int32_t)
(* EnumProcessesCallback : PSYM_ENUMPROCESSES_CALLBACK -> (ptr void) *)
(* UserContext : void* -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library dbghelp (t "dbghelp.dll"))
(cffi:use-foreign-library dbghelp)

(cffi:defcfun ("SymEnumProcesses" sym-enum-processes :convention :stdcall) :int32
  (enum-processes-callback :pointer)   ; PSYM_ENUMPROCESSES_CALLBACK
  (user-context :pointer))   ; void*
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SymEnumProcesses = Win32::API::More->new('dbghelp',
    'BOOL SymEnumProcesses(LPVOID EnumProcessesCallback, LPVOID UserContext)');
# my $ret = $SymEnumProcesses->Call($EnumProcessesCallback, $UserContext);
# EnumProcessesCallback : PSYM_ENUMPROCESSES_CALLBACK -> LPVOID
# UserContext : void* -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# コールバック(関数ポインタ)は Perl sub を直接渡せません。Win32::API::Callback を使用してください。