Heap32First

// KERNEL32.dll
#include <windows.h>

BOOL Heap32First(
    HEAPENTRY32* lphe,
    DWORD th32ProcessID,
    UINT_PTR th32HeapID
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function Heap32First(
    lphe As IntPtr,   ' HEAPENTRY32* in/out
    th32ProcessID As UInteger,   ' DWORD
    th32HeapID As UIntPtr   ' UINT_PTR
) As Boolean
End Function

' lphe : HEAPENTRY32* in/out
' th32ProcessID : DWORD
' th32HeapID : UINT_PTR
Declare PtrSafe Function Heap32First Lib "kernel32" ( _
    ByVal lphe As LongPtr, _
    ByVal th32ProcessID As Long, _
    ByVal th32HeapID 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

Heap32First = ctypes.windll.kernel32.Heap32First
Heap32First.restype = wintypes.BOOL
Heap32First.argtypes = [
    ctypes.c_void_p,  # lphe : HEAPENTRY32* in/out
    wintypes.DWORD,  # th32ProcessID : DWORD
    ctypes.c_size_t,  # th32HeapID : UINT_PTR
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
Heap32First = Fiddle::Function.new(
  lib['Heap32First'],
  [
    Fiddle::TYPE_VOIDP,  # lphe : HEAPENTRY32* in/out
    -Fiddle::TYPE_INT,  # th32ProcessID : DWORD
    Fiddle::TYPE_UINTPTR_T,  # th32HeapID : UINT_PTR
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn Heap32First(
        lphe: *mut HEAPENTRY32,  // HEAPENTRY32* in/out
        th32ProcessID: u32,  // DWORD
        th32HeapID: usize  // UINT_PTR
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern bool Heap32First(IntPtr lphe, uint th32ProcessID, UIntPtr th32HeapID);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_Heap32First' -Namespace Win32 -PassThru
# $api::Heap32First(lphe, th32ProcessID, th32HeapID)

#uselib "KERNEL32.dll"
#func global Heap32First "Heap32First" sptr, sptr, sptr
; Heap32First varptr(lphe), th32ProcessID, th32HeapID   ; 戻り値は stat
; lphe : HEAPENTRY32* in/out -> "sptr"
; th32ProcessID : DWORD -> "sptr"
; th32HeapID : UINT_PTR -> "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 "KERNEL32.dll"
#cfunc global Heap32First "Heap32First" var, int, sptr
; res = Heap32First(lphe, th32ProcessID, th32HeapID)
; lphe : HEAPENTRY32* in/out -> "var"
; th32ProcessID : DWORD -> "int"
; th32HeapID : UINT_PTR -> "sptr"
; ※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 Heap32First(HEAPENTRY32* lphe, DWORD th32ProcessID, UINT_PTR th32HeapID)
#uselib "KERNEL32.dll"
#cfunc global Heap32First "Heap32First" var, int, intptr
; res = Heap32First(lphe, th32ProcessID, th32HeapID)
; lphe : HEAPENTRY32* in/out -> "var"
; th32ProcessID : DWORD -> "int"
; th32HeapID : UINT_PTR -> "intptr"
; ※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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procHeap32First = kernel32.NewProc("Heap32First")
)

// lphe (HEAPENTRY32* in/out), th32ProcessID (DWORD), th32HeapID (UINT_PTR)
r1, _, err := procHeap32First.Call(
	uintptr(lphe),
	uintptr(th32ProcessID),
	uintptr(th32HeapID),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function Heap32First(
  lphe: Pointer;   // HEAPENTRY32* in/out
  th32ProcessID: DWORD;   // DWORD
  th32HeapID: NativeUInt   // UINT_PTR
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'Heap32First';

result := DllCall("KERNEL32\Heap32First"
    , "Ptr", lphe   ; HEAPENTRY32* in/out
    , "UInt", th32ProcessID   ; DWORD
    , "UPtr", th32HeapID   ; UINT_PTR
    , "Int")   ; return: BOOL

●Heap32First(lphe, th32ProcessID, th32HeapID) = DLL("KERNEL32.dll", "bool Heap32First(void*, dword, int)")
# 呼び出し: Heap32First(lphe, th32ProcessID, th32HeapID)
# lphe : HEAPENTRY32* in/out -> "void*"
# th32ProcessID : DWORD -> "dword"
# th32HeapID : UINT_PTR -> "int"
# 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)。