WTSVirtualChannelPurgeInput

// WTSAPI32.dll
#include <windows.h>

BOOL WTSVirtualChannelPurgeInput(
    HANDLE hChannelHandle
);

<DllImport("WTSAPI32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WTSVirtualChannelPurgeInput(
    hChannelHandle As IntPtr   ' HANDLE
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' hChannelHandle : HANDLE
Declare PtrSafe Function WTSVirtualChannelPurgeInput Lib "wtsapi32" ( _
    ByVal hChannelHandle 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

WTSVirtualChannelPurgeInput = ctypes.windll.wtsapi32.WTSVirtualChannelPurgeInput
WTSVirtualChannelPurgeInput.restype = wintypes.BOOL
WTSVirtualChannelPurgeInput.argtypes = [
    wintypes.HANDLE,  # hChannelHandle : HANDLE
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WTSAPI32.dll')
WTSVirtualChannelPurgeInput = Fiddle::Function.new(
  lib['WTSVirtualChannelPurgeInput'],
  [
    Fiddle::TYPE_VOIDP,  # hChannelHandle : HANDLE
  ],
  Fiddle::TYPE_INT)

#[link(name = "wtsapi32")]
extern "system" {
    fn WTSVirtualChannelPurgeInput(
        hChannelHandle: *mut core::ffi::c_void  // HANDLE
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("WTSAPI32.dll", SetLastError = true)]
public static extern bool WTSVirtualChannelPurgeInput(IntPtr hChannelHandle);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WTSAPI32_WTSVirtualChannelPurgeInput' -Namespace Win32 -PassThru
# $api::WTSVirtualChannelPurgeInput(hChannelHandle)

#uselib "WTSAPI32.dll"
#func global WTSVirtualChannelPurgeInput "WTSVirtualChannelPurgeInput" sptr
; WTSVirtualChannelPurgeInput hChannelHandle   ; 戻り値は stat
; hChannelHandle : 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 "WTSAPI32.dll"
#cfunc global WTSVirtualChannelPurgeInput "WTSVirtualChannelPurgeInput" sptr
; res = WTSVirtualChannelPurgeInput(hChannelHandle)
; hChannelHandle : HANDLE -> "sptr"

; BOOL WTSVirtualChannelPurgeInput(HANDLE hChannelHandle)
#uselib "WTSAPI32.dll"
#cfunc global WTSVirtualChannelPurgeInput "WTSVirtualChannelPurgeInput" intptr
; res = WTSVirtualChannelPurgeInput(hChannelHandle)
; hChannelHandle : HANDLE -> "intptr"

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

var (
	wtsapi32 = windows.NewLazySystemDLL("WTSAPI32.dll")
	procWTSVirtualChannelPurgeInput = wtsapi32.NewProc("WTSVirtualChannelPurgeInput")
)

// hChannelHandle (HANDLE)
r1, _, err := procWTSVirtualChannelPurgeInput.Call(
	uintptr(hChannelHandle),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function WTSVirtualChannelPurgeInput(
  hChannelHandle: THandle   // HANDLE
): BOOL; stdcall;
  external 'WTSAPI32.dll' name 'WTSVirtualChannelPurgeInput';

result := DllCall("WTSAPI32\WTSVirtualChannelPurgeInput"
    , "Ptr", hChannelHandle   ; HANDLE
    , "Int")   ; return: BOOL

●WTSVirtualChannelPurgeInput(hChannelHandle) = DLL("WTSAPI32.dll", "bool WTSVirtualChannelPurgeInput(void*)")
# 呼び出し: WTSVirtualChannelPurgeInput(hChannelHandle)
# hChannelHandle : 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)。

const std = @import("std");

extern "wtsapi32" fn WTSVirtualChannelPurgeInput(
    hChannelHandle: ?*anyopaque // HANDLE
) callconv(std.os.windows.WINAPI) i32;

proc WTSVirtualChannelPurgeInput(
    hChannelHandle: pointer  # HANDLE
): int32 {.importc: "WTSVirtualChannelPurgeInput", stdcall, dynlib: "WTSAPI32.dll".}

pragma(lib, "wtsapi32");
extern(Windows)
int WTSVirtualChannelPurgeInput(
    void* hChannelHandle   // HANDLE
);

ccall((:WTSVirtualChannelPurgeInput, "WTSAPI32.dll"), stdcall, Int32,
      (Ptr{Cvoid},),
      hChannelHandle)
# hChannelHandle : HANDLE -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t WTSVirtualChannelPurgeInput(
    void* hChannelHandle);
]]
local wtsapi32 = ffi.load("wtsapi32")
-- wtsapi32.WTSVirtualChannelPurgeInput(hChannelHandle)
-- hChannelHandle : HANDLE
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('WTSAPI32.dll');
const WTSVirtualChannelPurgeInput = lib.func('__stdcall', 'WTSVirtualChannelPurgeInput', 'int32_t', ['void *']);
// WTSVirtualChannelPurgeInput(hChannelHandle)
// hChannelHandle : HANDLE -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("WTSAPI32.dll", {
  WTSVirtualChannelPurgeInput: { parameters: ["pointer"], result: "i32" },
});
// lib.symbols.WTSVirtualChannelPurgeInput(hChannelHandle)
// hChannelHandle : HANDLE -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t WTSVirtualChannelPurgeInput(
    void* hChannelHandle);
C, "WTSAPI32.dll");
// $ffi->WTSVirtualChannelPurgeInput(hChannelHandle);
// hChannelHandle : HANDLE
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Wtsapi32 extends StdCallLibrary {
    Wtsapi32 INSTANCE = Native.load("wtsapi32", Wtsapi32.class);
    boolean WTSVirtualChannelPurgeInput(
        Pointer hChannelHandle   // HANDLE
    );
}

@[Link("wtsapi32")]
lib LibWTSAPI32
  fun WTSVirtualChannelPurgeInput = WTSVirtualChannelPurgeInput(
    hChannelHandle : Void*   # HANDLE
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef WTSVirtualChannelPurgeInputNative = Int32 Function(Pointer<Void>);
typedef WTSVirtualChannelPurgeInputDart = int Function(Pointer<Void>);
final WTSVirtualChannelPurgeInput = DynamicLibrary.open('WTSAPI32.dll')
    .lookupFunction<WTSVirtualChannelPurgeInputNative, WTSVirtualChannelPurgeInputDart>('WTSVirtualChannelPurgeInput');
// hChannelHandle : HANDLE -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function WTSVirtualChannelPurgeInput(
  hChannelHandle: THandle   // HANDLE
): BOOL; stdcall;
  external 'WTSAPI32.dll' name 'WTSVirtualChannelPurgeInput';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "WTSVirtualChannelPurgeInput"
  c_WTSVirtualChannelPurgeInput :: Ptr () -> IO CInt
-- hChannelHandle : HANDLE -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let wtsvirtualchannelpurgeinput =
  foreign "WTSVirtualChannelPurgeInput"
    ((ptr void) @-> returning int32_t)
(* hChannelHandle : HANDLE -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library wtsapi32 (t "WTSAPI32.dll"))
(cffi:use-foreign-library wtsapi32)

(cffi:defcfun ("WTSVirtualChannelPurgeInput" wtsvirtual-channel-purge-input :convention :stdcall) :int32
  (h-channel-handle :pointer))   ; HANDLE
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $WTSVirtualChannelPurgeInput = Win32::API::More->new('WTSAPI32',
    'BOOL WTSVirtualChannelPurgeInput(HANDLE hChannelHandle)');
# my $ret = $WTSVirtualChannelPurgeInput->Call($hChannelHandle);
# hChannelHandle : HANDLE -> HANDLE
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。