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DispatchMessageA

関数

メッセージを対応するウィンドウプロシージャへ送出する(ANSI)。

DLLUSER32.dll文字セットANSI (-A)呼出規約winapi対応OSWindows 2000 以降

シグネチャ

// USER32.dll  (ANSI / -A)
#include <windows.h>

LRESULT DispatchMessageA(
    const MSG* lpMsg
);

パラメーター

名前	型	方向
lpMsg	MSG*	in

戻り値の型: LRESULT

各言語での呼び出し定義

// USER32.dll  (ANSI / -A)
#include <windows.h>

LRESULT DispatchMessageA(
    const MSG* lpMsg
);

[DllImport("USER32.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
static extern IntPtr DispatchMessageA(
    IntPtr lpMsg   // MSG*
);

<DllImport("USER32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function DispatchMessageA(
    lpMsg As IntPtr   ' MSG*
) As IntPtr
End Function

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

import ctypes
from ctypes import wintypes

DispatchMessageA = ctypes.windll.user32.DispatchMessageA
DispatchMessageA.restype = ctypes.c_ssize_t
DispatchMessageA.argtypes = [
    ctypes.c_void_p,  # lpMsg : MSG*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
DispatchMessageA = Fiddle::Function.new(
  lib['DispatchMessageA'],
  [
    Fiddle::TYPE_VOIDP,  # lpMsg : MSG*
  ],
  Fiddle::TYPE_INTPTR_T)

#[link(name = "user32")]
extern "system" {
    fn DispatchMessageA(
        lpMsg: *const MSG  // MSG*
    ) -> isize;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("USER32.dll", CharSet = CharSet.Ansi)]
public static extern IntPtr DispatchMessageA(IntPtr lpMsg);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_DispatchMessageA' -Namespace Win32 -PassThru
# $api::DispatchMessageA(lpMsg)

#uselib "USER32.dll"
#func global DispatchMessageA "DispatchMessageA" sptr
; DispatchMessageA varptr(lpMsg)   ; 戻り値は stat
; lpMsg : MSG* -> "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。

出力引数:

#uselib "USER32.dll"
#cfunc global DispatchMessageA "DispatchMessageA" var
; res = DispatchMessageA(lpMsg)
; lpMsg : MSG* -> "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。#uselib "USER32.dll"
#cfunc global DispatchMessageA "DispatchMessageA" sptr
; res = DispatchMessageA(varptr(lpMsg))
; lpMsg : MSG* -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; LRESULT DispatchMessageA(MSG* lpMsg)
#uselib "USER32.dll"
#cfunc global DispatchMessageA "DispatchMessageA" var
; res = DispatchMessageA(lpMsg)
; lpMsg : MSG* -> "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。; LRESULT DispatchMessageA(MSG* lpMsg)
#uselib "USER32.dll"
#cfunc global DispatchMessageA "DispatchMessageA" intptr
; res = DispatchMessageA(varptr(lpMsg))
; lpMsg : MSG* -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procDispatchMessageA = user32.NewProc("DispatchMessageA")
)

// lpMsg (MSG*)
r1, _, err := procDispatchMessageA.Call(
	uintptr(lpMsg),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LRESULT

function DispatchMessageA(
  lpMsg: Pointer   // MSG*
): NativeInt; stdcall;
  external 'USER32.dll' name 'DispatchMessageA';

result := DllCall("USER32\DispatchMessageA"
    , "Ptr", lpMsg   ; MSG*
    , "Ptr")   ; return: LRESULT

●DispatchMessageA(lpMsg) = DLL("USER32.dll", "int DispatchMessageA(void*)")
# 呼び出し: DispatchMessageA(lpMsg)
# lpMsg : MSG* -> "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)。