TcModifyFlow

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

DWORD TcModifyFlow(
    HANDLE FlowHandle,
    TC_GEN_FLOW* pGenericFlow
);

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

' FlowHandle : HANDLE
' pGenericFlow : TC_GEN_FLOW*
Declare PtrSafe Function TcModifyFlow Lib "traffic" ( _
    ByVal FlowHandle As LongPtr, _
    ByVal pGenericFlow 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

TcModifyFlow = ctypes.windll.traffic.TcModifyFlow
TcModifyFlow.restype = wintypes.DWORD
TcModifyFlow.argtypes = [
    wintypes.HANDLE,  # FlowHandle : HANDLE
    ctypes.c_void_p,  # pGenericFlow : TC_GEN_FLOW*
]

require 'fiddle'
require 'fiddle/import'

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

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

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

#uselib "TRAFFIC.dll"
#func global TcModifyFlow "TcModifyFlow" sptr, sptr
; TcModifyFlow FlowHandle, varptr(pGenericFlow)   ; 戻り値は stat
; FlowHandle : HANDLE -> "sptr"
; pGenericFlow : TC_GEN_FLOW* -> "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 TcModifyFlow "TcModifyFlow" sptr, var
; res = TcModifyFlow(FlowHandle, pGenericFlow)
; FlowHandle : HANDLE -> "sptr"
; pGenericFlow : TC_GEN_FLOW* -> "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。

; DWORD TcModifyFlow(HANDLE FlowHandle, TC_GEN_FLOW* pGenericFlow)
#uselib "TRAFFIC.dll"
#cfunc global TcModifyFlow "TcModifyFlow" intptr, var
; res = TcModifyFlow(FlowHandle, pGenericFlow)
; FlowHandle : HANDLE -> "intptr"
; pGenericFlow : TC_GEN_FLOW* -> "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。

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

var (
	traffic = windows.NewLazySystemDLL("TRAFFIC.dll")
	procTcModifyFlow = traffic.NewProc("TcModifyFlow")
)

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

function TcModifyFlow(
  FlowHandle: THandle;   // HANDLE
  pGenericFlow: Pointer   // TC_GEN_FLOW*
): DWORD; stdcall;
  external 'TRAFFIC.dll' name 'TcModifyFlow';

result := DllCall("TRAFFIC\TcModifyFlow"
    , "Ptr", FlowHandle   ; HANDLE
    , "Ptr", pGenericFlow   ; TC_GEN_FLOW*
    , "UInt")   ; return: DWORD

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