GetProcessHeaps

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

DWORD GetProcessHeaps(
    DWORD NumberOfHeaps,
    HANDLE* ProcessHeaps
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetProcessHeaps(
    NumberOfHeaps As UInteger,   ' DWORD
    ProcessHeaps As IntPtr   ' HANDLE* out
) As UInteger
End Function

' NumberOfHeaps : DWORD
' ProcessHeaps : HANDLE* out
Declare PtrSafe Function GetProcessHeaps Lib "kernel32" ( _
    ByVal NumberOfHeaps As Long, _
    ByVal ProcessHeaps 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

GetProcessHeaps = ctypes.windll.kernel32.GetProcessHeaps
GetProcessHeaps.restype = wintypes.DWORD
GetProcessHeaps.argtypes = [
    wintypes.DWORD,  # NumberOfHeaps : DWORD
    ctypes.c_void_p,  # ProcessHeaps : HANDLE* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetProcessHeaps = Fiddle::Function.new(
  lib['GetProcessHeaps'],
  [
    -Fiddle::TYPE_INT,  # NumberOfHeaps : DWORD
    Fiddle::TYPE_VOIDP,  # ProcessHeaps : HANDLE* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn GetProcessHeaps(
        NumberOfHeaps: u32,  // DWORD
        ProcessHeaps: *mut *mut core::ffi::c_void  // HANDLE* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern uint GetProcessHeaps(uint NumberOfHeaps, IntPtr ProcessHeaps);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetProcessHeaps' -Namespace Win32 -PassThru
# $api::GetProcessHeaps(NumberOfHeaps, ProcessHeaps)

#uselib "KERNEL32.dll"
#func global GetProcessHeaps "GetProcessHeaps" sptr, sptr
; GetProcessHeaps NumberOfHeaps, ProcessHeaps   ; 戻り値は stat
; NumberOfHeaps : DWORD -> "sptr"
; ProcessHeaps : HANDLE* 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 "KERNEL32.dll"
#cfunc global GetProcessHeaps "GetProcessHeaps" int, sptr
; res = GetProcessHeaps(NumberOfHeaps, ProcessHeaps)
; NumberOfHeaps : DWORD -> "int"
; ProcessHeaps : HANDLE* out -> "sptr"

; DWORD GetProcessHeaps(DWORD NumberOfHeaps, HANDLE* ProcessHeaps)
#uselib "KERNEL32.dll"
#cfunc global GetProcessHeaps "GetProcessHeaps" int, intptr
; res = GetProcessHeaps(NumberOfHeaps, ProcessHeaps)
; NumberOfHeaps : DWORD -> "int"
; ProcessHeaps : HANDLE* out -> "intptr"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procGetProcessHeaps = kernel32.NewProc("GetProcessHeaps")
)

// NumberOfHeaps (DWORD), ProcessHeaps (HANDLE* out)
r1, _, err := procGetProcessHeaps.Call(
	uintptr(NumberOfHeaps),
	uintptr(ProcessHeaps),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function GetProcessHeaps(
  NumberOfHeaps: DWORD;   // DWORD
  ProcessHeaps: Pointer   // HANDLE* out
): DWORD; stdcall;
  external 'KERNEL32.dll' name 'GetProcessHeaps';

result := DllCall("KERNEL32\GetProcessHeaps"
    , "UInt", NumberOfHeaps   ; DWORD
    , "Ptr", ProcessHeaps   ; HANDLE* out
    , "UInt")   ; return: DWORD

●GetProcessHeaps(NumberOfHeaps, ProcessHeaps) = DLL("KERNEL32.dll", "dword GetProcessHeaps(dword, void*)")
# 呼び出し: GetProcessHeaps(NumberOfHeaps, ProcessHeaps)
# NumberOfHeaps : DWORD -> "dword"
# ProcessHeaps : HANDLE* 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)。