GetKeyState

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

SHORT GetKeyState(
    INT nVirtKey
);

<DllImport("USER32.dll", ExactSpelling:=True)>
Public Shared Function GetKeyState(
    nVirtKey As Integer   ' INT
) As Short
End Function

' nVirtKey : INT
Declare PtrSafe Function GetKeyState Lib "user32" ( _
    ByVal nVirtKey As Long) As Integer
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GetKeyState = ctypes.windll.user32.GetKeyState
GetKeyState.restype = ctypes.c_short
GetKeyState.argtypes = [
    ctypes.c_int,  # nVirtKey : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
GetKeyState = Fiddle::Function.new(
  lib['GetKeyState'],
  [
    Fiddle::TYPE_INT,  # nVirtKey : INT
  ],
  Fiddle::TYPE_SHORT)

#[link(name = "user32")]
extern "system" {
    fn GetKeyState(
        nVirtKey: i32  // INT
    ) -> i16;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("USER32.dll")]
public static extern short GetKeyState(int nVirtKey);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_GetKeyState' -Namespace Win32 -PassThru
# $api::GetKeyState(nVirtKey)

#uselib "USER32.dll"
#func global GetKeyState "GetKeyState" sptr
; GetKeyState nVirtKey   ; 戻り値は stat
; nVirtKey : INT -> "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 GetKeyState "GetKeyState" int
; res = GetKeyState(nVirtKey)
; nVirtKey : INT -> "int"

; SHORT GetKeyState(INT nVirtKey)
#uselib "USER32.dll"
#cfunc global GetKeyState "GetKeyState" int
; res = GetKeyState(nVirtKey)
; nVirtKey : INT -> "int"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procGetKeyState = user32.NewProc("GetKeyState")
)

// nVirtKey (INT)
r1, _, err := procGetKeyState.Call(
	uintptr(nVirtKey),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // SHORT

function GetKeyState(
  nVirtKey: Integer   // INT
): Smallint; stdcall;
  external 'USER32.dll' name 'GetKeyState';

result := DllCall("USER32\GetKeyState"
    , "Int", nVirtKey   ; INT
    , "Short")   ; return: SHORT

●GetKeyState(nVirtKey) = DLL("USER32.dll", "int GetKeyState(int)")
# 呼び出し: GetKeyState(nVirtKey)
# nVirtKey : INT -> "int"
# 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)。