GetMenuItemCount

// USER32.dll
#include <windows.h>

INT GetMenuItemCount(
    HMENU hMenu   // optional
);

<DllImport("USER32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetMenuItemCount(
    hMenu As IntPtr   ' HMENU optional
) As Integer
End Function

' hMenu : HMENU optional
Declare PtrSafe Function GetMenuItemCount Lib "user32" ( _
    ByVal hMenu 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

GetMenuItemCount = ctypes.windll.user32.GetMenuItemCount
GetMenuItemCount.restype = ctypes.c_int
GetMenuItemCount.argtypes = [
    wintypes.HANDLE,  # hMenu : HMENU optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
GetMenuItemCount = Fiddle::Function.new(
  lib['GetMenuItemCount'],
  [
    Fiddle::TYPE_VOIDP,  # hMenu : HMENU optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn GetMenuItemCount(
        hMenu: *mut core::ffi::c_void  // HMENU optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("USER32.dll", SetLastError = true)]
public static extern int GetMenuItemCount(IntPtr hMenu);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_GetMenuItemCount' -Namespace Win32 -PassThru
# $api::GetMenuItemCount(hMenu)

#uselib "USER32.dll"
#func global GetMenuItemCount "GetMenuItemCount" sptr
; GetMenuItemCount hMenu   ; 戻り値は stat
; hMenu : HMENU 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 "USER32.dll"
#cfunc global GetMenuItemCount "GetMenuItemCount" sptr
; res = GetMenuItemCount(hMenu)
; hMenu : HMENU optional -> "sptr"

; INT GetMenuItemCount(HMENU hMenu)
#uselib "USER32.dll"
#cfunc global GetMenuItemCount "GetMenuItemCount" intptr
; res = GetMenuItemCount(hMenu)
; hMenu : HMENU optional -> "intptr"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procGetMenuItemCount = user32.NewProc("GetMenuItemCount")
)

// hMenu (HMENU optional)
r1, _, err := procGetMenuItemCount.Call(
	uintptr(hMenu),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function GetMenuItemCount(
  hMenu: THandle   // HMENU optional
): Integer; stdcall;
  external 'USER32.dll' name 'GetMenuItemCount';

result := DllCall("USER32\GetMenuItemCount"
    , "Ptr", hMenu   ; HMENU optional
    , "Int")   ; return: INT

●GetMenuItemCount(hMenu) = DLL("USER32.dll", "int GetMenuItemCount(void*)")
# 呼び出し: GetMenuItemCount(hMenu)
# hMenu : HMENU 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)。