IsAccelerator

// OLE32.dll
#include <windows.h>

BOOL IsAccelerator(
    HACCEL hAccel,
    INT cAccelEntries,
    MSG* lpMsg,
    WORD* lpwCmd
);

<DllImport("OLE32.dll", ExactSpelling:=True)>
Public Shared Function IsAccelerator(
    hAccel As IntPtr,   ' HACCEL
    cAccelEntries As Integer,   ' INT
    lpMsg As IntPtr,   ' MSG*
    <Out> ByRef lpwCmd As UShort   ' WORD* out
) As Boolean
End Function

' hAccel : HACCEL
' cAccelEntries : INT
' lpMsg : MSG*
' lpwCmd : WORD* out
Declare PtrSafe Function IsAccelerator Lib "ole32" ( _
    ByVal hAccel As LongPtr, _
    ByVal cAccelEntries As Long, _
    ByVal lpMsg As LongPtr, _
    ByRef lpwCmd As Integer) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

IsAccelerator = ctypes.windll.ole32.IsAccelerator
IsAccelerator.restype = wintypes.BOOL
IsAccelerator.argtypes = [
    wintypes.HANDLE,  # hAccel : HACCEL
    ctypes.c_int,  # cAccelEntries : INT
    ctypes.c_void_p,  # lpMsg : MSG*
    ctypes.POINTER(ctypes.c_ushort),  # lpwCmd : WORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLE32.dll')
IsAccelerator = Fiddle::Function.new(
  lib['IsAccelerator'],
  [
    Fiddle::TYPE_VOIDP,  # hAccel : HACCEL
    Fiddle::TYPE_INT,  # cAccelEntries : INT
    Fiddle::TYPE_VOIDP,  # lpMsg : MSG*
    Fiddle::TYPE_VOIDP,  # lpwCmd : WORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "ole32")]
extern "system" {
    fn IsAccelerator(
        hAccel: *mut core::ffi::c_void,  // HACCEL
        cAccelEntries: i32,  // INT
        lpMsg: *mut MSG,  // MSG*
        lpwCmd: *mut u16  // WORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("OLE32.dll")]
public static extern bool IsAccelerator(IntPtr hAccel, int cAccelEntries, IntPtr lpMsg, out ushort lpwCmd);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLE32_IsAccelerator' -Namespace Win32 -PassThru
# $api::IsAccelerator(hAccel, cAccelEntries, lpMsg, lpwCmd)

#uselib "OLE32.dll"
#func global IsAccelerator "IsAccelerator" sptr, sptr, sptr, sptr
; IsAccelerator hAccel, cAccelEntries, varptr(lpMsg), varptr(lpwCmd)   ; 戻り値は stat
; hAccel : HACCEL -> "sptr"
; cAccelEntries : INT -> "sptr"
; lpMsg : MSG* -> "sptr"
; lpwCmd : WORD* 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 "OLE32.dll"
#cfunc global IsAccelerator "IsAccelerator" sptr, int, var, var
; res = IsAccelerator(hAccel, cAccelEntries, lpMsg, lpwCmd)
; hAccel : HACCEL -> "sptr"
; cAccelEntries : INT -> "int"
; lpMsg : MSG* -> "var"
; lpwCmd : WORD* out -> "var"
; ※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 IsAccelerator(HACCEL hAccel, INT cAccelEntries, MSG* lpMsg, WORD* lpwCmd)
#uselib "OLE32.dll"
#cfunc global IsAccelerator "IsAccelerator" intptr, int, var, var
; res = IsAccelerator(hAccel, cAccelEntries, lpMsg, lpwCmd)
; hAccel : HACCEL -> "intptr"
; cAccelEntries : INT -> "int"
; lpMsg : MSG* -> "var"
; lpwCmd : WORD* out -> "var"
; ※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 (
	ole32 = windows.NewLazySystemDLL("OLE32.dll")
	procIsAccelerator = ole32.NewProc("IsAccelerator")
)

// hAccel (HACCEL), cAccelEntries (INT), lpMsg (MSG*), lpwCmd (WORD* out)
r1, _, err := procIsAccelerator.Call(
	uintptr(hAccel),
	uintptr(cAccelEntries),
	uintptr(lpMsg),
	uintptr(lpwCmd),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function IsAccelerator(
  hAccel: THandle;   // HACCEL
  cAccelEntries: Integer;   // INT
  lpMsg: Pointer;   // MSG*
  lpwCmd: Pointer   // WORD* out
): BOOL; stdcall;
  external 'OLE32.dll' name 'IsAccelerator';

result := DllCall("OLE32\IsAccelerator"
    , "Ptr", hAccel   ; HACCEL
    , "Int", cAccelEntries   ; INT
    , "Ptr", lpMsg   ; MSG*
    , "Ptr", lpwCmd   ; WORD* out
    , "Int")   ; return: BOOL

●IsAccelerator(hAccel, cAccelEntries, lpMsg, lpwCmd) = DLL("OLE32.dll", "bool IsAccelerator(void*, int, void*, void*)")
# 呼び出し: IsAccelerator(hAccel, cAccelEntries, lpMsg, lpwCmd)
# hAccel : HACCEL -> "void*"
# cAccelEntries : INT -> "int"
# lpMsg : MSG* -> "void*"
# lpwCmd : WORD* 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)。