ホーム › Devices.Usb › WinUsb_UnregisterIsochBuffer

WinUsb_UnregisterIsochBuffer

関数

登録済みのアイソクロナス転送バッファを解放する。

DLLWINUSB.dll呼出規約winapiSetLastErrorあり対応OSWindows 8.1 以降

シグネチャ

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

BOOL WinUsb_UnregisterIsochBuffer(
    void* IsochBufferHandle
);

パラメーター

名前	型	方向	説明
IsochBufferHandle	void*	in	登録を解除する対象のアイソクロナスバッファハンドル。

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL WinUsb_UnregisterIsochBuffer(
    void* IsochBufferHandle
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("WINUSB.dll", SetLastError = true, ExactSpelling = true)]
static extern bool WinUsb_UnregisterIsochBuffer(
    IntPtr IsochBufferHandle   // void*
);

<DllImport("WINUSB.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WinUsb_UnregisterIsochBuffer(
    IsochBufferHandle As IntPtr   ' void*
) As Boolean
End Function

' IsochBufferHandle : void*
Declare PtrSafe Function WinUsb_UnregisterIsochBuffer Lib "winusb" ( _
    ByVal IsochBufferHandle 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

WinUsb_UnregisterIsochBuffer = ctypes.windll.winusb.WinUsb_UnregisterIsochBuffer
WinUsb_UnregisterIsochBuffer.restype = wintypes.BOOL
WinUsb_UnregisterIsochBuffer.argtypes = [
    ctypes.POINTER(None),  # IsochBufferHandle : void*
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINUSB.dll')
WinUsb_UnregisterIsochBuffer = Fiddle::Function.new(
  lib['WinUsb_UnregisterIsochBuffer'],
  [
    Fiddle::TYPE_VOIDP,  # IsochBufferHandle : void*
  ],
  Fiddle::TYPE_INT)

#[link(name = "winusb")]
extern "system" {
    fn WinUsb_UnregisterIsochBuffer(
        IsochBufferHandle: *mut ()  // void*
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

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

#uselib "WINUSB.dll"
#func global WinUsb_UnregisterIsochBuffer "WinUsb_UnregisterIsochBuffer" sptr
; WinUsb_UnregisterIsochBuffer IsochBufferHandle   ; 戻り値は stat
; IsochBufferHandle : void* -> "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 "WINUSB.dll"
#cfunc global WinUsb_UnregisterIsochBuffer "WinUsb_UnregisterIsochBuffer" sptr
; res = WinUsb_UnregisterIsochBuffer(IsochBufferHandle)
; IsochBufferHandle : void* -> "sptr"

; BOOL WinUsb_UnregisterIsochBuffer(void* IsochBufferHandle)
#uselib "WINUSB.dll"
#cfunc global WinUsb_UnregisterIsochBuffer "WinUsb_UnregisterIsochBuffer" intptr
; res = WinUsb_UnregisterIsochBuffer(IsochBufferHandle)
; IsochBufferHandle : void* -> "intptr"

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

var (
	winusb = windows.NewLazySystemDLL("WINUSB.dll")
	procWinUsb_UnregisterIsochBuffer = winusb.NewProc("WinUsb_UnregisterIsochBuffer")
)

// IsochBufferHandle (void*)
r1, _, err := procWinUsb_UnregisterIsochBuffer.Call(
	uintptr(IsochBufferHandle),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function WinUsb_UnregisterIsochBuffer(
  IsochBufferHandle: Pointer   // void*
): BOOL; stdcall;
  external 'WINUSB.dll' name 'WinUsb_UnregisterIsochBuffer';

result := DllCall("WINUSB\WinUsb_UnregisterIsochBuffer"
    , "Ptr", IsochBufferHandle   ; void*
    , "Int")   ; return: BOOL

●WinUsb_UnregisterIsochBuffer(IsochBufferHandle) = DLL("WINUSB.dll", "bool WinUsb_UnregisterIsochBuffer(void*)")
# 呼び出し: WinUsb_UnregisterIsochBuffer(IsochBufferHandle)
# IsochBufferHandle : void* -> "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)。