TcDeleteFlow

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

DWORD TcDeleteFlow(
    HANDLE FlowHandle
);

<DllImport("TRAFFIC.dll", ExactSpelling:=True)>
Public Shared Function TcDeleteFlow(
    FlowHandle As IntPtr   ' HANDLE
) As UInteger
End Function

' FlowHandle : HANDLE
Declare PtrSafe Function TcDeleteFlow Lib "traffic" ( _
    ByVal FlowHandle 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

TcDeleteFlow = ctypes.windll.traffic.TcDeleteFlow
TcDeleteFlow.restype = wintypes.DWORD
TcDeleteFlow.argtypes = [
    wintypes.HANDLE,  # FlowHandle : HANDLE
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('TRAFFIC.dll')
TcDeleteFlow = Fiddle::Function.new(
  lib['TcDeleteFlow'],
  [
    Fiddle::TYPE_VOIDP,  # FlowHandle : HANDLE
  ],
  -Fiddle::TYPE_INT)

#[link(name = "traffic")]
extern "system" {
    fn TcDeleteFlow(
        FlowHandle: *mut core::ffi::c_void  // HANDLE
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("TRAFFIC.dll")]
public static extern uint TcDeleteFlow(IntPtr FlowHandle);
"@
$api = Add-Type -MemberDefinition $sig -Name 'TRAFFIC_TcDeleteFlow' -Namespace Win32 -PassThru
# $api::TcDeleteFlow(FlowHandle)

#uselib "TRAFFIC.dll"
#func global TcDeleteFlow "TcDeleteFlow" sptr
; TcDeleteFlow FlowHandle   ; 戻り値は stat
; FlowHandle : HANDLE -> "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 "TRAFFIC.dll"
#cfunc global TcDeleteFlow "TcDeleteFlow" sptr
; res = TcDeleteFlow(FlowHandle)
; FlowHandle : HANDLE -> "sptr"

; DWORD TcDeleteFlow(HANDLE FlowHandle)
#uselib "TRAFFIC.dll"
#cfunc global TcDeleteFlow "TcDeleteFlow" intptr
; res = TcDeleteFlow(FlowHandle)
; FlowHandle : HANDLE -> "intptr"

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

var (
	traffic = windows.NewLazySystemDLL("TRAFFIC.dll")
	procTcDeleteFlow = traffic.NewProc("TcDeleteFlow")
)

// FlowHandle (HANDLE)
r1, _, err := procTcDeleteFlow.Call(
	uintptr(FlowHandle),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function TcDeleteFlow(
  FlowHandle: THandle   // HANDLE
): DWORD; stdcall;
  external 'TRAFFIC.dll' name 'TcDeleteFlow';

result := DllCall("TRAFFIC\TcDeleteFlow"
    , "Ptr", FlowHandle   ; HANDLE
    , "UInt")   ; return: DWORD

●TcDeleteFlow(FlowHandle) = DLL("TRAFFIC.dll", "dword TcDeleteFlow(void*)")
# 呼び出し: TcDeleteFlow(FlowHandle)
# FlowHandle : HANDLE -> "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)。