SHAllocShared

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

HANDLE SHAllocShared(
    const void* pvData,   // optional
    DWORD dwSize,
    DWORD dwProcessId
);

<DllImport("SHLWAPI.dll", ExactSpelling:=True)>
Public Shared Function SHAllocShared(
    pvData As IntPtr,   ' void* optional
    dwSize As UInteger,   ' DWORD
    dwProcessId As UInteger   ' DWORD
) As IntPtr
End Function

' pvData : void* optional
' dwSize : DWORD
' dwProcessId : DWORD
Declare PtrSafe Function SHAllocShared Lib "shlwapi" ( _
    ByVal pvData As LongPtr, _
    ByVal dwSize As Long, _
    ByVal dwProcessId As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SHAllocShared = ctypes.windll.shlwapi.SHAllocShared
SHAllocShared.restype = ctypes.c_void_p
SHAllocShared.argtypes = [
    ctypes.POINTER(None),  # pvData : void* optional
    wintypes.DWORD,  # dwSize : DWORD
    wintypes.DWORD,  # dwProcessId : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
SHAllocShared = Fiddle::Function.new(
  lib['SHAllocShared'],
  [
    Fiddle::TYPE_VOIDP,  # pvData : void* optional
    -Fiddle::TYPE_INT,  # dwSize : DWORD
    -Fiddle::TYPE_INT,  # dwProcessId : DWORD
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "shlwapi")]
extern "system" {
    fn SHAllocShared(
        pvData: *const (),  // void* optional
        dwSize: u32,  // DWORD
        dwProcessId: u32  // DWORD
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHLWAPI.dll")]
public static extern IntPtr SHAllocShared(IntPtr pvData, uint dwSize, uint dwProcessId);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_SHAllocShared' -Namespace Win32 -PassThru
# $api::SHAllocShared(pvData, dwSize, dwProcessId)

#uselib "SHLWAPI.dll"
#func global SHAllocShared "SHAllocShared" sptr, sptr, sptr
; SHAllocShared pvData, dwSize, dwProcessId   ; 戻り値は stat
; pvData : void* optional -> "sptr"
; dwSize : DWORD -> "sptr"
; dwProcessId : 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。

#uselib "SHLWAPI.dll"
#cfunc global SHAllocShared "SHAllocShared" sptr, int, int
; res = SHAllocShared(pvData, dwSize, dwProcessId)
; pvData : void* optional -> "sptr"
; dwSize : DWORD -> "int"
; dwProcessId : DWORD -> "int"

; HANDLE SHAllocShared(void* pvData, DWORD dwSize, DWORD dwProcessId)
#uselib "SHLWAPI.dll"
#cfunc global SHAllocShared "SHAllocShared" intptr, int, int
; res = SHAllocShared(pvData, dwSize, dwProcessId)
; pvData : void* optional -> "intptr"
; dwSize : DWORD -> "int"
; dwProcessId : DWORD -> "int"

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

var (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procSHAllocShared = shlwapi.NewProc("SHAllocShared")
)

// pvData (void* optional), dwSize (DWORD), dwProcessId (DWORD)
r1, _, err := procSHAllocShared.Call(
	uintptr(pvData),
	uintptr(dwSize),
	uintptr(dwProcessId),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HANDLE

function SHAllocShared(
  pvData: Pointer;   // void* optional
  dwSize: DWORD;   // DWORD
  dwProcessId: DWORD   // DWORD
): THandle; stdcall;
  external 'SHLWAPI.dll' name 'SHAllocShared';

result := DllCall("SHLWAPI\SHAllocShared"
    , "Ptr", pvData   ; void* optional
    , "UInt", dwSize   ; DWORD
    , "UInt", dwProcessId   ; DWORD
    , "Ptr")   ; return: HANDLE

●SHAllocShared(pvData, dwSize, dwProcessId) = DLL("SHLWAPI.dll", "void* SHAllocShared(void*, dword, dword)")
# 呼び出し: SHAllocShared(pvData, dwSize, dwProcessId)
# pvData : void* optional -> "void*"
# dwSize : DWORD -> "dword"
# dwProcessId : 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)。