DirectDrawEnumerateA

// DDRAW.dll  (ANSI / -A)
#include <windows.h>

HRESULT DirectDrawEnumerateA(
    LPDDENUMCALLBACKA lpCallback,
    void* lpContext
);

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

' lpCallback : LPDDENUMCALLBACKA
' lpContext : void* in/out
Declare PtrSafe Function DirectDrawEnumerateA Lib "ddraw" ( _
    ByVal lpCallback As LongPtr, _
    ByVal lpContext 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

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

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DDRAW.dll')
DirectDrawEnumerateA = Fiddle::Function.new(
  lib['DirectDrawEnumerateA'],
  [
    Fiddle::TYPE_VOIDP,  # lpCallback : LPDDENUMCALLBACKA
    Fiddle::TYPE_VOIDP,  # lpContext : void* in/out
  ],
  Fiddle::TYPE_INT)

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

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

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

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

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

var (
	ddraw = windows.NewLazySystemDLL("DDRAW.dll")
	procDirectDrawEnumerateA = ddraw.NewProc("DirectDrawEnumerateA")
)

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

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

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

●DirectDrawEnumerateA(lpCallback, lpContext) = DLL("DDRAW.dll", "int DirectDrawEnumerateA(void*, void*)")
# 呼び出し: DirectDrawEnumerateA(lpCallback, lpContext)
# lpCallback : LPDDENUMCALLBACKA -> "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)。