ホーム › System.Threading › CallbackMayRunLong

CallbackMayRunLong

関数

コールバックが長時間実行される可能性をプールに通知する。

DLLKERNEL32.dll呼出規約winapi対応OSWindows Vista 以降

シグネチャ

// KERNEL32.dll
#include <windows.h>

BOOL CallbackMayRunLong(
    PTP_CALLBACK_INSTANCE pci
);

パラメーター

名前	型	方向
pci	PTP_CALLBACK_INSTANCE	in

戻り値の型: BOOL

各言語での呼び出し定義

// KERNEL32.dll
#include <windows.h>

BOOL CallbackMayRunLong(
    PTP_CALLBACK_INSTANCE pci
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", ExactSpelling = true)]
static extern bool CallbackMayRunLong(
    IntPtr pci   // PTP_CALLBACK_INSTANCE
);

<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Function CallbackMayRunLong(
    pci As IntPtr   ' PTP_CALLBACK_INSTANCE
) As Boolean
End Function

' pci : PTP_CALLBACK_INSTANCE
Declare PtrSafe Function CallbackMayRunLong Lib "kernel32" ( _
    ByVal pci 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

CallbackMayRunLong = ctypes.windll.kernel32.CallbackMayRunLong
CallbackMayRunLong.restype = wintypes.BOOL
CallbackMayRunLong.argtypes = [
    ctypes.c_ssize_t,  # pci : PTP_CALLBACK_INSTANCE
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
CallbackMayRunLong = Fiddle::Function.new(
  lib['CallbackMayRunLong'],
  [
    Fiddle::TYPE_INTPTR_T,  # pci : PTP_CALLBACK_INSTANCE
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn CallbackMayRunLong(
        pci: isize  // PTP_CALLBACK_INSTANCE
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll")]
public static extern bool CallbackMayRunLong(IntPtr pci);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_CallbackMayRunLong' -Namespace Win32 -PassThru
# $api::CallbackMayRunLong(pci)

#uselib "KERNEL32.dll"
#func global CallbackMayRunLong "CallbackMayRunLong" sptr
; CallbackMayRunLong pci   ; 戻り値は stat
; pci : PTP_CALLBACK_INSTANCE -> "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 "KERNEL32.dll"
#cfunc global CallbackMayRunLong "CallbackMayRunLong" sptr
; res = CallbackMayRunLong(pci)
; pci : PTP_CALLBACK_INSTANCE -> "sptr"

; BOOL CallbackMayRunLong(PTP_CALLBACK_INSTANCE pci)
#uselib "KERNEL32.dll"
#cfunc global CallbackMayRunLong "CallbackMayRunLong" intptr
; res = CallbackMayRunLong(pci)
; pci : PTP_CALLBACK_INSTANCE -> "intptr"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procCallbackMayRunLong = kernel32.NewProc("CallbackMayRunLong")
)

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

function CallbackMayRunLong(
  pci: NativeInt   // PTP_CALLBACK_INSTANCE
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'CallbackMayRunLong';

result := DllCall("KERNEL32\CallbackMayRunLong"
    , "Ptr", pci   ; PTP_CALLBACK_INSTANCE
    , "Int")   ; return: BOOL

●CallbackMayRunLong(pci) = DLL("KERNEL32.dll", "bool CallbackMayRunLong(int)")
# 呼び出し: CallbackMayRunLong(pci)
# pci : PTP_CALLBACK_INSTANCE -> "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)。