SHAutoComplete

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

HRESULT SHAutoComplete(
    HWND hwndEdit,
    SHELL_AUTOCOMPLETE_FLAGS dwFlags
);

<DllImport("SHLWAPI.dll", ExactSpelling:=True)>
Public Shared Function SHAutoComplete(
    hwndEdit As IntPtr,   ' HWND
    dwFlags As UInteger   ' SHELL_AUTOCOMPLETE_FLAGS
) As Integer
End Function

' hwndEdit : HWND
' dwFlags : SHELL_AUTOCOMPLETE_FLAGS
Declare PtrSafe Function SHAutoComplete Lib "shlwapi" ( _
    ByVal hwndEdit As LongPtr, _
    ByVal dwFlags 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

SHAutoComplete = ctypes.windll.shlwapi.SHAutoComplete
SHAutoComplete.restype = ctypes.c_int
SHAutoComplete.argtypes = [
    wintypes.HANDLE,  # hwndEdit : HWND
    wintypes.DWORD,  # dwFlags : SHELL_AUTOCOMPLETE_FLAGS
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
SHAutoComplete = Fiddle::Function.new(
  lib['SHAutoComplete'],
  [
    Fiddle::TYPE_VOIDP,  # hwndEdit : HWND
    -Fiddle::TYPE_INT,  # dwFlags : SHELL_AUTOCOMPLETE_FLAGS
  ],
  Fiddle::TYPE_INT)

#[link(name = "shlwapi")]
extern "system" {
    fn SHAutoComplete(
        hwndEdit: *mut core::ffi::c_void,  // HWND
        dwFlags: u32  // SHELL_AUTOCOMPLETE_FLAGS
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHLWAPI.dll")]
public static extern int SHAutoComplete(IntPtr hwndEdit, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_SHAutoComplete' -Namespace Win32 -PassThru
# $api::SHAutoComplete(hwndEdit, dwFlags)

#uselib "SHLWAPI.dll"
#func global SHAutoComplete "SHAutoComplete" sptr, sptr
; SHAutoComplete hwndEdit, dwFlags   ; 戻り値は stat
; hwndEdit : HWND -> "sptr"
; dwFlags : SHELL_AUTOCOMPLETE_FLAGS -> "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 SHAutoComplete "SHAutoComplete" sptr, int
; res = SHAutoComplete(hwndEdit, dwFlags)
; hwndEdit : HWND -> "sptr"
; dwFlags : SHELL_AUTOCOMPLETE_FLAGS -> "int"

; HRESULT SHAutoComplete(HWND hwndEdit, SHELL_AUTOCOMPLETE_FLAGS dwFlags)
#uselib "SHLWAPI.dll"
#cfunc global SHAutoComplete "SHAutoComplete" intptr, int
; res = SHAutoComplete(hwndEdit, dwFlags)
; hwndEdit : HWND -> "intptr"
; dwFlags : SHELL_AUTOCOMPLETE_FLAGS -> "int"

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

var (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procSHAutoComplete = shlwapi.NewProc("SHAutoComplete")
)

// hwndEdit (HWND), dwFlags (SHELL_AUTOCOMPLETE_FLAGS)
r1, _, err := procSHAutoComplete.Call(
	uintptr(hwndEdit),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function SHAutoComplete(
  hwndEdit: THandle;   // HWND
  dwFlags: DWORD   // SHELL_AUTOCOMPLETE_FLAGS
): Integer; stdcall;
  external 'SHLWAPI.dll' name 'SHAutoComplete';

result := DllCall("SHLWAPI\SHAutoComplete"
    , "Ptr", hwndEdit   ; HWND
    , "UInt", dwFlags   ; SHELL_AUTOCOMPLETE_FLAGS
    , "Int")   ; return: HRESULT

●SHAutoComplete(hwndEdit, dwFlags) = DLL("SHLWAPI.dll", "int SHAutoComplete(void*, dword)")
# 呼び出し: SHAutoComplete(hwndEdit, dwFlags)
# hwndEdit : HWND -> "void*"
# dwFlags : SHELL_AUTOCOMPLETE_FLAGS -> "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)。