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InSendMessage

関数

現スレッドが他からの送信メッセージ処理中かを判定する。

DLLUSER32.dll呼出規約winapi対応OSWindows 2000 以降

シグネチャ

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

BOOL InSendMessage(void);

パラメーターなし。戻り値: BOOL

各言語での呼び出し定義

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

BOOL InSendMessage(void);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll", ExactSpelling = true)]
static extern bool InSendMessage();

<DllImport("USER32.dll", ExactSpelling:=True)>
Public Shared Function InSendMessage() As Boolean
End Function

Declare PtrSafe Function InSendMessage Lib "user32" () As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

InSendMessage = ctypes.windll.user32.InSendMessage
InSendMessage.restype = wintypes.BOOL
InSendMessage.argtypes = []

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
InSendMessage = Fiddle::Function.new(
  lib['InSendMessage'],
  [],
  Fiddle::TYPE_INT)

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

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll")]
public static extern bool InSendMessage();
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_InSendMessage' -Namespace Win32 -PassThru
# $api::InSendMessage()

#uselib "USER32.dll"
#func global InSendMessage "InSendMessage"
; InSendMessage   ; 戻り値は stat
; ※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 InSendMessage "InSendMessage"
; res = InSendMessage()

; BOOL InSendMessage()
#uselib "USER32.dll"
#cfunc global InSendMessage "InSendMessage"
; res = InSendMessage()

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procInSendMessage = user32.NewProc("InSendMessage")
)

r1, _, err := procInSendMessage.Call()
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function InSendMessage: BOOL; stdcall;
  external 'USER32.dll' name 'InSendMessage';

result := DllCall("USER32\InSendMessage", "Int")

●InSendMessage() = DLL("USER32.dll", "bool InSendMessage()")
# 呼び出し: InSendMessage()
# 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)。