WerFreeString

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

void WerFreeString(
    LPCWSTR pwszStr
);

<DllImport("wer.dll", ExactSpelling:=True)>
Public Shared Sub WerFreeString(
    <MarshalAs(UnmanagedType.LPWStr)> pwszStr As String   ' LPCWSTR
)
End Sub

' pwszStr : LPCWSTR
Declare PtrSafe Sub WerFreeString Lib "wer" ( _
    ByVal pwszStr As LongPtr)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

WerFreeString = ctypes.windll.wer.WerFreeString
WerFreeString.restype = None
WerFreeString.argtypes = [
    wintypes.LPCWSTR,  # pwszStr : LPCWSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('wer.dll')
WerFreeString = Fiddle::Function.new(
  lib['WerFreeString'],
  [
    Fiddle::TYPE_VOIDP,  # pwszStr : LPCWSTR
  ],
  Fiddle::TYPE_VOID)

#[link(name = "wer")]
extern "system" {
    fn WerFreeString(
        pwszStr: *const u16  // LPCWSTR
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("wer.dll")]
public static extern void WerFreeString([MarshalAs(UnmanagedType.LPWStr)] string pwszStr);
"@
$api = Add-Type -MemberDefinition $sig -Name 'wer_WerFreeString' -Namespace Win32 -PassThru
# $api::WerFreeString(pwszStr)

#uselib "wer.dll"
#func global WerFreeString "WerFreeString" sptr
; WerFreeString pwszStr
; pwszStr : LPCWSTR -> "sptr"

#uselib "wer.dll"
#func global WerFreeString "WerFreeString" wstr
; WerFreeString pwszStr
; pwszStr : LPCWSTR -> "wstr"

; void WerFreeString(LPCWSTR pwszStr)
#uselib "wer.dll"
#func global WerFreeString "WerFreeString" wstr
; WerFreeString pwszStr
; pwszStr : LPCWSTR -> "wstr"

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

var (
	wer = windows.NewLazySystemDLL("wer.dll")
	procWerFreeString = wer.NewProc("WerFreeString")
)

// pwszStr (LPCWSTR)
r1, _, err := procWerFreeString.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pwszStr))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure WerFreeString(
  pwszStr: PWideChar   // LPCWSTR
); stdcall;
  external 'wer.dll' name 'WerFreeString';

result := DllCall("wer\WerFreeString"
    , "WStr", pwszStr   ; LPCWSTR
    , "Int")   ; return: void

●WerFreeString(pwszStr) = DLL("wer.dll", "int WerFreeString(char*)")
# 呼び出し: WerFreeString(pwszStr)
# pwszStr : LPCWSTR -> "char*"
# 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)。