DirectDrawEnumerateW

// DDRAW.dll  (Unicode / -W)
#include <windows.h>

HRESULT DirectDrawEnumerateW(
    LPDDENUMCALLBACKW lpCallback,
    void* lpContext
);

<DllImport("DDRAW.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function DirectDrawEnumerateW(
    lpCallback As IntPtr,   ' LPDDENUMCALLBACKW
    lpContext As IntPtr   ' void* in/out
) As Integer
End Function

' lpCallback : LPDDENUMCALLBACKW
' lpContext : void* in/out
Declare PtrSafe Function DirectDrawEnumerateW Lib "ddraw" ( _
    ByVal lpCallback As LongPtr, _
    ByVal lpContext As LongPtr) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

DirectDrawEnumerateW = ctypes.windll.ddraw.DirectDrawEnumerateW
DirectDrawEnumerateW.restype = ctypes.c_int
DirectDrawEnumerateW.argtypes = [
    ctypes.c_void_p,  # lpCallback : LPDDENUMCALLBACKW
    ctypes.POINTER(None),  # lpContext : void* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DDRAW.dll')
DirectDrawEnumerateW = Fiddle::Function.new(
  lib['DirectDrawEnumerateW'],
  [
    Fiddle::TYPE_VOIDP,  # lpCallback : LPDDENUMCALLBACKW
    Fiddle::TYPE_VOIDP,  # lpContext : void* in/out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "ddraw")]
extern "system" {
    fn DirectDrawEnumerateW(
        lpCallback: *const core::ffi::c_void,  // LPDDENUMCALLBACKW
        lpContext: *mut ()  // void* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("DDRAW.dll", CharSet = CharSet.Unicode)]
public static extern int DirectDrawEnumerateW(IntPtr lpCallback, IntPtr lpContext);
"@
$api = Add-Type -MemberDefinition $sig -Name 'DDRAW_DirectDrawEnumerateW' -Namespace Win32 -PassThru
# $api::DirectDrawEnumerateW(lpCallback, lpContext)

#uselib "DDRAW.dll"
#func global DirectDrawEnumerateW "DirectDrawEnumerateW" wptr, wptr
; DirectDrawEnumerateW lpCallback, lpContext   ; 戻り値は stat
; lpCallback : LPDDENUMCALLBACKW -> "wptr"
; lpContext : void* in/out -> "wptr"
; ※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 "DDRAW.dll"
#cfunc global DirectDrawEnumerateW "DirectDrawEnumerateW" sptr, sptr
; res = DirectDrawEnumerateW(lpCallback, lpContext)
; lpCallback : LPDDENUMCALLBACKW -> "sptr"
; lpContext : void* in/out -> "sptr"

; HRESULT DirectDrawEnumerateW(LPDDENUMCALLBACKW lpCallback, void* lpContext)
#uselib "DDRAW.dll"
#cfunc global DirectDrawEnumerateW "DirectDrawEnumerateW" intptr, intptr
; res = DirectDrawEnumerateW(lpCallback, lpContext)
; lpCallback : LPDDENUMCALLBACKW -> "intptr"
; lpContext : void* in/out -> "intptr"

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

var (
	ddraw = windows.NewLazySystemDLL("DDRAW.dll")
	procDirectDrawEnumerateW = ddraw.NewProc("DirectDrawEnumerateW")
)

// lpCallback (LPDDENUMCALLBACKW), lpContext (void* in/out)
r1, _, err := procDirectDrawEnumerateW.Call(
	uintptr(lpCallback),
	uintptr(lpContext),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function DirectDrawEnumerateW(
  lpCallback: Pointer;   // LPDDENUMCALLBACKW
  lpContext: Pointer   // void* in/out
): Integer; stdcall;
  external 'DDRAW.dll' name 'DirectDrawEnumerateW';

result := DllCall("DDRAW\DirectDrawEnumerateW"
    , "Ptr", lpCallback   ; LPDDENUMCALLBACKW
    , "Ptr", lpContext   ; void* in/out
    , "Int")   ; return: HRESULT

●DirectDrawEnumerateW(lpCallback, lpContext) = DLL("DDRAW.dll", "int DirectDrawEnumerateW(void*, void*)")
# 呼び出し: DirectDrawEnumerateW(lpCallback, lpContext)
# lpCallback : LPDDENUMCALLBACKW -> "void*"
# lpContext : void* in/out -> "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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。