SymGetSourceVarFromToken

// dbghelp.dll  (ANSI / -A)
#include <windows.h>

BOOL SymGetSourceVarFromToken(
    HANDLE hProcess,
    void* Token,
    LPCSTR Params,   // optional
    LPCSTR VarName,
    LPSTR Value,
    DWORD Size
);

<DllImport("dbghelp.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SymGetSourceVarFromToken(
    hProcess As IntPtr,   ' HANDLE
    Token As IntPtr,   ' void*
    <MarshalAs(UnmanagedType.LPStr)> Params As String,   ' LPCSTR optional
    <MarshalAs(UnmanagedType.LPStr)> VarName As String,   ' LPCSTR
    <MarshalAs(UnmanagedType.LPStr)> Value As System.Text.StringBuilder,   ' LPSTR out
    Size As UInteger   ' DWORD
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' hProcess : HANDLE
' Token : void*
' Params : LPCSTR optional
' VarName : LPCSTR
' Value : LPSTR out
' Size : DWORD
Declare PtrSafe Function SymGetSourceVarFromToken Lib "dbghelp" ( _
    ByVal hProcess As LongPtr, _
    ByVal Token As LongPtr, _
    ByVal Params As String, _
    ByVal VarName As String, _
    ByVal Value As String, _
    ByVal Size 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

SymGetSourceVarFromToken = ctypes.windll.dbghelp.SymGetSourceVarFromToken
SymGetSourceVarFromToken.restype = wintypes.BOOL
SymGetSourceVarFromToken.argtypes = [
    wintypes.HANDLE,  # hProcess : HANDLE
    ctypes.POINTER(None),  # Token : void*
    wintypes.LPCSTR,  # Params : LPCSTR optional
    wintypes.LPCSTR,  # VarName : LPCSTR
    wintypes.LPSTR,  # Value : LPSTR out
    wintypes.DWORD,  # Size : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('dbghelp.dll')
SymGetSourceVarFromToken = Fiddle::Function.new(
  lib['SymGetSourceVarFromToken'],
  [
    Fiddle::TYPE_VOIDP,  # hProcess : HANDLE
    Fiddle::TYPE_VOIDP,  # Token : void*
    Fiddle::TYPE_VOIDP,  # Params : LPCSTR optional
    Fiddle::TYPE_VOIDP,  # VarName : LPCSTR
    Fiddle::TYPE_VOIDP,  # Value : LPSTR out
    -Fiddle::TYPE_INT,  # Size : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "dbghelp")]
extern "system" {
    fn SymGetSourceVarFromToken(
        hProcess: *mut core::ffi::c_void,  // HANDLE
        Token: *mut (),  // void*
        Params: *const u8,  // LPCSTR optional
        VarName: *const u8,  // LPCSTR
        Value: *mut u8,  // LPSTR out
        Size: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("dbghelp.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern bool SymGetSourceVarFromToken(IntPtr hProcess, IntPtr Token, [MarshalAs(UnmanagedType.LPStr)] string Params, [MarshalAs(UnmanagedType.LPStr)] string VarName, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder Value, uint Size);
"@
$api = Add-Type -MemberDefinition $sig -Name 'dbghelp_SymGetSourceVarFromToken' -Namespace Win32 -PassThru
# $api::SymGetSourceVarFromToken(hProcess, Token, Params, VarName, Value, Size)

#uselib "dbghelp.dll"
#func global SymGetSourceVarFromToken "SymGetSourceVarFromToken" sptr, sptr, sptr, sptr, sptr, sptr
; SymGetSourceVarFromToken hProcess, Token, Params, VarName, varptr(Value), Size   ; 戻り値は stat
; hProcess : HANDLE -> "sptr"
; Token : void* -> "sptr"
; Params : LPCSTR optional -> "sptr"
; VarName : LPCSTR -> "sptr"
; Value : LPSTR out -> "sptr"
; Size : 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。

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

var (
	dbghelp = windows.NewLazySystemDLL("dbghelp.dll")
	procSymGetSourceVarFromToken = dbghelp.NewProc("SymGetSourceVarFromToken")
)

// hProcess (HANDLE), Token (void*), Params (LPCSTR optional), VarName (LPCSTR), Value (LPSTR out), Size (DWORD)
r1, _, err := procSymGetSourceVarFromToken.Call(
	uintptr(hProcess),
	uintptr(Token),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(Params))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(VarName))),
	uintptr(Value),
	uintptr(Size),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SymGetSourceVarFromToken(
  hProcess: THandle;   // HANDLE
  Token: Pointer;   // void*
  Params: PAnsiChar;   // LPCSTR optional
  VarName: PAnsiChar;   // LPCSTR
  Value: PAnsiChar;   // LPSTR out
  Size: DWORD   // DWORD
): BOOL; stdcall;
  external 'dbghelp.dll' name 'SymGetSourceVarFromToken';

result := DllCall("dbghelp\SymGetSourceVarFromToken"
    , "Ptr", hProcess   ; HANDLE
    , "Ptr", Token   ; void*
    , "AStr", Params   ; LPCSTR optional
    , "AStr", VarName   ; LPCSTR
    , "Ptr", Value   ; LPSTR out
    , "UInt", Size   ; DWORD
    , "Int")   ; return: BOOL

●SymGetSourceVarFromToken(hProcess, Token, Params, VarName, Value, Size) = DLL("dbghelp.dll", "bool SymGetSourceVarFromToken(void*, void*, char*, char*, char*, dword)")
# 呼び出し: SymGetSourceVarFromToken(hProcess, Token, Params, VarName, Value, Size)
# hProcess : HANDLE -> "void*"
# Token : void* -> "void*"
# Params : LPCSTR optional -> "char*"
# VarName : LPCSTR -> "char*"
# Value : LPSTR out -> "char*"
# Size : 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)。

const std = @import("std");

extern "dbghelp" fn SymGetSourceVarFromToken(
    hProcess: ?*anyopaque, // HANDLE
    Token: ?*anyopaque, // void*
    Params: [*c]const u8, // LPCSTR optional
    VarName: [*c]const u8, // LPCSTR
    Value: [*c]u8, // LPSTR out
    Size: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;

proc SymGetSourceVarFromToken(
    hProcess: pointer,  # HANDLE
    Token: pointer,  # void*
    Params: cstring,  # LPCSTR optional
    VarName: cstring,  # LPCSTR
    Value: ptr char,  # LPSTR out
    Size: uint32  # DWORD
): int32 {.importc: "SymGetSourceVarFromToken", stdcall, dynlib: "dbghelp.dll".}

pragma(lib, "dbghelp");
extern(Windows)
int SymGetSourceVarFromToken(
    void* hProcess,   // HANDLE
    void* Token,   // void*
    const(char)* Params,   // LPCSTR optional
    const(char)* VarName,   // LPCSTR
    char* Value,   // LPSTR out
    uint Size   // DWORD
);

ccall((:SymGetSourceVarFromToken, "dbghelp.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{Cvoid}, Cstring, Cstring, Ptr{UInt8}, UInt32),
      hProcess, Token, Params, VarName, Value, Size)
# hProcess : HANDLE -> Ptr{Cvoid}
# Token : void* -> Ptr{Cvoid}
# Params : LPCSTR optional -> Cstring
# VarName : LPCSTR -> Cstring
# Value : LPSTR out -> Ptr{UInt8}
# Size : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t SymGetSourceVarFromToken(
    void* hProcess,
    void* Token,
    const char* Params,
    const char* VarName,
    char* Value,
    uint32_t Size);
]]
local dbghelp = ffi.load("dbghelp")
-- dbghelp.SymGetSourceVarFromToken(hProcess, Token, Params, VarName, Value, Size)
-- hProcess : HANDLE
-- Token : void*
-- Params : LPCSTR optional
-- VarName : LPCSTR
-- Value : LPSTR out
-- Size : DWORD
-- 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 SymGetSourceVarFromToken = lib.func('__stdcall', 'SymGetSourceVarFromToken', 'int32_t', ['void *', 'void *', 'str', 'str', 'char *', 'uint32_t']);
// SymGetSourceVarFromToken(hProcess, Token, Params, VarName, Value, Size)
// hProcess : HANDLE -> 'void *'
// Token : void* -> 'void *'
// Params : LPCSTR optional -> 'str'
// VarName : LPCSTR -> 'str'
// Value : LPSTR out -> 'char *'
// Size : DWORD -> 'uint32_t'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("dbghelp.dll", {
  SymGetSourceVarFromToken: { parameters: ["pointer", "pointer", "buffer", "buffer", "buffer", "u32"], result: "i32" },
});
// lib.symbols.SymGetSourceVarFromToken(hProcess, Token, Params, VarName, Value, Size)
// hProcess : HANDLE -> "pointer"
// Token : void* -> "pointer"
// Params : LPCSTR optional -> "buffer"
// VarName : LPCSTR -> "buffer"
// Value : LPSTR out -> "buffer"
// Size : DWORD -> "u32"
// 文字列は "buffer"。ANSI(-A) は new TextEncoder() で UTF-8/ANSI バイト列(末尾に \x00)を渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t SymGetSourceVarFromToken(
    void* hProcess,
    void* Token,
    const char* Params,
    const char* VarName,
    char* Value,
    uint32_t Size);
C, "dbghelp.dll");
// $ffi->SymGetSourceVarFromToken(hProcess, Token, Params, VarName, Value, Size);
// hProcess : HANDLE
// Token : void*
// Params : LPCSTR optional
// VarName : LPCSTR
// Value : LPSTR out
// Size : DWORD
// 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, W32APIOptions.ASCII_OPTIONS);
    boolean SymGetSourceVarFromToken(
        Pointer hProcess,   // HANDLE
        Pointer Token,   // void*
        String Params,   // LPCSTR optional
        String VarName,   // LPCSTR
        byte[] Value,   // LPSTR out
        int Size   // DWORD
    );
}

@[Link("dbghelp")]
lib Libdbghelp
  fun SymGetSourceVarFromToken = SymGetSourceVarFromToken(
    hProcess : Void*,   # HANDLE
    Token : Void*,   # void*
    Params : UInt8*,   # LPCSTR optional
    VarName : UInt8*,   # LPCSTR
    Value : UInt8*,   # LPSTR out
    Size : UInt32   # DWORD
  ) : 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 SymGetSourceVarFromTokenNative = Int32 Function(Pointer<Void>, Pointer<Void>, Pointer<Utf8>, Pointer<Utf8>, Pointer<Utf8>, Uint32);
typedef SymGetSourceVarFromTokenDart = int Function(Pointer<Void>, Pointer<Void>, Pointer<Utf8>, Pointer<Utf8>, Pointer<Utf8>, int);
final SymGetSourceVarFromToken = DynamicLibrary.open('dbghelp.dll')
    .lookupFunction<SymGetSourceVarFromTokenNative, SymGetSourceVarFromTokenDart>('SymGetSourceVarFromToken');
// hProcess : HANDLE -> Pointer<Void>
// Token : void* -> Pointer<Void>
// Params : LPCSTR optional -> Pointer<Utf8>
// VarName : LPCSTR -> Pointer<Utf8>
// Value : LPSTR out -> Pointer<Utf8>
// Size : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SymGetSourceVarFromToken(
  hProcess: THandle;   // HANDLE
  Token: Pointer;   // void*
  Params: PAnsiChar;   // LPCSTR optional
  VarName: PAnsiChar;   // LPCSTR
  Value: PAnsiChar;   // LPSTR out
  Size: DWORD   // DWORD
): BOOL; stdcall;
  external 'dbghelp.dll' name 'SymGetSourceVarFromToken';

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

foreign import stdcall safe "SymGetSourceVarFromToken"
  c_SymGetSourceVarFromToken :: Ptr () -> Ptr () -> CString -> CString -> CString -> Word32 -> IO CInt
-- hProcess : HANDLE -> Ptr ()
-- Token : void* -> Ptr ()
-- Params : LPCSTR optional -> CString
-- VarName : LPCSTR -> CString
-- Value : LPSTR out -> CString
-- Size : DWORD -> Word32
-- 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 symgetsourcevarfromtoken =
  foreign "SymGetSourceVarFromToken"
    ((ptr void) @-> (ptr void) @-> string @-> string @-> string @-> uint32_t @-> returning int32_t)
(* hProcess : HANDLE -> (ptr void) *)
(* Token : void* -> (ptr void) *)
(* Params : LPCSTR optional -> string *)
(* VarName : LPCSTR -> string *)
(* Value : LPSTR out -> string *)
(* Size : DWORD -> uint32_t *)
(* 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 ("SymGetSourceVarFromToken" sym-get-source-var-from-token :convention :stdcall) :int32
  (h-process :pointer)   ; HANDLE
  (token :pointer)   ; void*
  (params :string)   ; LPCSTR optional
  (var-name :string)   ; LPCSTR
  (value :pointer)   ; LPSTR out
  (size :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SymGetSourceVarFromToken = Win32::API::More->new('dbghelp',
    'BOOL SymGetSourceVarFromToken(HANDLE hProcess, LPVOID Token, LPCSTR Params, LPCSTR VarName, LPSTR Value, DWORD Size)');
# my $ret = $SymGetSourceVarFromToken->Call($hProcess, $Token, $Params, $VarName, $Value, $Size);
# hProcess : HANDLE -> HANDLE
# Token : void* -> LPVOID
# Params : LPCSTR optional -> LPCSTR
# VarName : LPCSTR -> LPCSTR
# Value : LPSTR out -> LPSTR
# Size : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。