HeapFree

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

BOOL HeapFree(
    HANDLE hHeap,
    HEAP_FLAGS dwFlags,
    void* lpMem   // optional
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function HeapFree(
    hHeap As IntPtr,   ' HANDLE in/out
    dwFlags As UInteger,   ' HEAP_FLAGS
    lpMem As IntPtr   ' void* optional
) As Boolean
End Function

' hHeap : HANDLE in/out
' dwFlags : HEAP_FLAGS
' lpMem : void* optional
Declare PtrSafe Function HeapFree Lib "kernel32" ( _
    ByVal hHeap As LongPtr, _
    ByVal dwFlags As Long, _
    ByVal lpMem 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

HeapFree = ctypes.windll.kernel32.HeapFree
HeapFree.restype = wintypes.BOOL
HeapFree.argtypes = [
    wintypes.HANDLE,  # hHeap : HANDLE in/out
    wintypes.DWORD,  # dwFlags : HEAP_FLAGS
    ctypes.POINTER(None),  # lpMem : void* optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
HeapFree = Fiddle::Function.new(
  lib['HeapFree'],
  [
    Fiddle::TYPE_VOIDP,  # hHeap : HANDLE in/out
    -Fiddle::TYPE_INT,  # dwFlags : HEAP_FLAGS
    Fiddle::TYPE_VOIDP,  # lpMem : void* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn HeapFree(
        hHeap: *mut core::ffi::c_void,  // HANDLE in/out
        dwFlags: u32,  // HEAP_FLAGS
        lpMem: *mut ()  // void* optional
    ) -> 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 HeapFree(IntPtr hHeap, uint dwFlags, IntPtr lpMem);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_HeapFree' -Namespace Win32 -PassThru
# $api::HeapFree(hHeap, dwFlags, lpMem)

#uselib "KERNEL32.dll"
#func global HeapFree "HeapFree" sptr, sptr, sptr
; HeapFree hHeap, dwFlags, lpMem   ; 戻り値は stat
; hHeap : HANDLE in/out -> "sptr"
; dwFlags : HEAP_FLAGS -> "sptr"
; lpMem : void* optional -> "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 HeapFree "HeapFree" sptr, int, sptr
; res = HeapFree(hHeap, dwFlags, lpMem)
; hHeap : HANDLE in/out -> "sptr"
; dwFlags : HEAP_FLAGS -> "int"
; lpMem : void* optional -> "sptr"

; BOOL HeapFree(HANDLE hHeap, HEAP_FLAGS dwFlags, void* lpMem)
#uselib "KERNEL32.dll"
#cfunc global HeapFree "HeapFree" intptr, int, intptr
; res = HeapFree(hHeap, dwFlags, lpMem)
; hHeap : HANDLE in/out -> "intptr"
; dwFlags : HEAP_FLAGS -> "int"
; lpMem : void* optional -> "intptr"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procHeapFree = kernel32.NewProc("HeapFree")
)

// hHeap (HANDLE in/out), dwFlags (HEAP_FLAGS), lpMem (void* optional)
r1, _, err := procHeapFree.Call(
	uintptr(hHeap),
	uintptr(dwFlags),
	uintptr(lpMem),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function HeapFree(
  hHeap: THandle;   // HANDLE in/out
  dwFlags: DWORD;   // HEAP_FLAGS
  lpMem: Pointer   // void* optional
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'HeapFree';

result := DllCall("KERNEL32\HeapFree"
    , "Ptr", hHeap   ; HANDLE in/out
    , "UInt", dwFlags   ; HEAP_FLAGS
    , "Ptr", lpMem   ; void* optional
    , "Int")   ; return: BOOL

●HeapFree(hHeap, dwFlags, lpMem) = DLL("KERNEL32.dll", "bool HeapFree(void*, dword, void*)")
# 呼び出し: HeapFree(hHeap, dwFlags, lpMem)
# hHeap : HANDLE in/out -> "void*"
# dwFlags : HEAP_FLAGS -> "dword"
# lpMem : void* optional -> "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)。