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SetMessageQueue

関数

スレッドのメッセージキューサイズを設定する(旧式)。

DLLUSER32.dll呼出規約winapi

シグネチャ

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

BOOL SetMessageQueue(
    INT cMessagesMax
);

パラメーター

名前	型	方向
cMessagesMax	INT	in

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL SetMessageQueue(
    INT cMessagesMax
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll", ExactSpelling = true)]
static extern bool SetMessageQueue(
    int cMessagesMax   // INT
);

<DllImport("USER32.dll", ExactSpelling:=True)>
Public Shared Function SetMessageQueue(
    cMessagesMax As Integer   ' INT
) As Boolean
End Function

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

import ctypes
from ctypes import wintypes

SetMessageQueue = ctypes.windll.user32.SetMessageQueue
SetMessageQueue.restype = wintypes.BOOL
SetMessageQueue.argtypes = [
    ctypes.c_int,  # cMessagesMax : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
SetMessageQueue = Fiddle::Function.new(
  lib['SetMessageQueue'],
  [
    Fiddle::TYPE_INT,  # cMessagesMax : INT
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll")]
public static extern bool SetMessageQueue(int cMessagesMax);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_SetMessageQueue' -Namespace Win32 -PassThru
# $api::SetMessageQueue(cMessagesMax)

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

; BOOL SetMessageQueue(INT cMessagesMax)
#uselib "USER32.dll"
#cfunc global SetMessageQueue "SetMessageQueue" int
; res = SetMessageQueue(cMessagesMax)
; cMessagesMax : INT -> "int"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procSetMessageQueue = user32.NewProc("SetMessageQueue")
)

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

function SetMessageQueue(
  cMessagesMax: Integer   // INT
): BOOL; stdcall;
  external 'USER32.dll' name 'SetMessageQueue';

result := DllCall("USER32\SetMessageQueue"
    , "Int", cMessagesMax   ; INT
    , "Int")   ; return: BOOL

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