GetCurrentInputMessageSource

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

BOOL GetCurrentInputMessageSource(
    INPUT_MESSAGE_SOURCE* inputMessageSource
);

<DllImport("USER32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetCurrentInputMessageSource(
    inputMessageSource As IntPtr   ' INPUT_MESSAGE_SOURCE* out
) As Boolean
End Function

' inputMessageSource : INPUT_MESSAGE_SOURCE* out
Declare PtrSafe Function GetCurrentInputMessageSource Lib "user32" ( _
    ByVal inputMessageSource 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

GetCurrentInputMessageSource = ctypes.windll.user32.GetCurrentInputMessageSource
GetCurrentInputMessageSource.restype = wintypes.BOOL
GetCurrentInputMessageSource.argtypes = [
    ctypes.c_void_p,  # inputMessageSource : INPUT_MESSAGE_SOURCE* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
GetCurrentInputMessageSource = Fiddle::Function.new(
  lib['GetCurrentInputMessageSource'],
  [
    Fiddle::TYPE_VOIDP,  # inputMessageSource : INPUT_MESSAGE_SOURCE* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn GetCurrentInputMessageSource(
        inputMessageSource: *mut INPUT_MESSAGE_SOURCE  // INPUT_MESSAGE_SOURCE* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll", SetLastError = true)]
public static extern bool GetCurrentInputMessageSource(IntPtr inputMessageSource);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_GetCurrentInputMessageSource' -Namespace Win32 -PassThru
# $api::GetCurrentInputMessageSource(inputMessageSource)

#uselib "USER32.dll"
#func global GetCurrentInputMessageSource "GetCurrentInputMessageSource" sptr
; GetCurrentInputMessageSource varptr(inputMessageSource)   ; 戻り値は stat
; inputMessageSource : INPUT_MESSAGE_SOURCE* 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 "USER32.dll"
#cfunc global GetCurrentInputMessageSource "GetCurrentInputMessageSource" var
; res = GetCurrentInputMessageSource(inputMessageSource)
; inputMessageSource : INPUT_MESSAGE_SOURCE* 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 GetCurrentInputMessageSource(INPUT_MESSAGE_SOURCE* inputMessageSource)
#uselib "USER32.dll"
#cfunc global GetCurrentInputMessageSource "GetCurrentInputMessageSource" var
; res = GetCurrentInputMessageSource(inputMessageSource)
; inputMessageSource : INPUT_MESSAGE_SOURCE* 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 (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procGetCurrentInputMessageSource = user32.NewProc("GetCurrentInputMessageSource")
)

// inputMessageSource (INPUT_MESSAGE_SOURCE* out)
r1, _, err := procGetCurrentInputMessageSource.Call(
	uintptr(inputMessageSource),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetCurrentInputMessageSource(
  inputMessageSource: Pointer   // INPUT_MESSAGE_SOURCE* out
): BOOL; stdcall;
  external 'USER32.dll' name 'GetCurrentInputMessageSource';

result := DllCall("USER32\GetCurrentInputMessageSource"
    , "Ptr", inputMessageSource   ; INPUT_MESSAGE_SOURCE* out
    , "Int")   ; return: BOOL

●GetCurrentInputMessageSource(inputMessageSource) = DLL("USER32.dll", "bool GetCurrentInputMessageSource(void*)")
# 呼び出し: GetCurrentInputMessageSource(inputMessageSource)
# inputMessageSource : INPUT_MESSAGE_SOURCE* 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)。