midiOutGetDevCapsW

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

DWORD midiOutGetDevCapsW(
    UINT_PTR uDeviceID,
    MIDIOUTCAPSW* pmoc,
    DWORD cbmoc
);

<DllImport("WINMM.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function midiOutGetDevCapsW(
    uDeviceID As UIntPtr,   ' UINT_PTR
    pmoc As IntPtr,   ' MIDIOUTCAPSW* out
    cbmoc As UInteger   ' DWORD
) As UInteger
End Function

' uDeviceID : UINT_PTR
' pmoc : MIDIOUTCAPSW* out
' cbmoc : DWORD
Declare PtrSafe Function midiOutGetDevCapsW Lib "winmm" ( _
    ByVal uDeviceID As LongPtr, _
    ByVal pmoc As LongPtr, _
    ByVal cbmoc As Long) 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

midiOutGetDevCapsW = ctypes.windll.winmm.midiOutGetDevCapsW
midiOutGetDevCapsW.restype = wintypes.DWORD
midiOutGetDevCapsW.argtypes = [
    ctypes.c_size_t,  # uDeviceID : UINT_PTR
    ctypes.c_void_p,  # pmoc : MIDIOUTCAPSW* out
    wintypes.DWORD,  # cbmoc : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINMM.dll')
midiOutGetDevCapsW = Fiddle::Function.new(
  lib['midiOutGetDevCapsW'],
  [
    Fiddle::TYPE_UINTPTR_T,  # uDeviceID : UINT_PTR
    Fiddle::TYPE_VOIDP,  # pmoc : MIDIOUTCAPSW* out
    -Fiddle::TYPE_INT,  # cbmoc : DWORD
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "winmm")]
extern "system" {
    fn midiOutGetDevCapsW(
        uDeviceID: usize,  // UINT_PTR
        pmoc: *mut MIDIOUTCAPSW,  // MIDIOUTCAPSW* out
        cbmoc: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINMM.dll", CharSet = CharSet.Unicode)]
public static extern uint midiOutGetDevCapsW(UIntPtr uDeviceID, IntPtr pmoc, uint cbmoc);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINMM_midiOutGetDevCapsW' -Namespace Win32 -PassThru
# $api::midiOutGetDevCapsW(uDeviceID, pmoc, cbmoc)

#uselib "WINMM.dll"
#func global midiOutGetDevCapsW "midiOutGetDevCapsW" wptr, wptr, wptr
; midiOutGetDevCapsW uDeviceID, varptr(pmoc), cbmoc   ; 戻り値は stat
; uDeviceID : UINT_PTR -> "wptr"
; pmoc : MIDIOUTCAPSW* out -> "wptr"
; cbmoc : DWORD -> "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 "WINMM.dll"
#cfunc global midiOutGetDevCapsW "midiOutGetDevCapsW" sptr, var, int
; res = midiOutGetDevCapsW(uDeviceID, pmoc, cbmoc)
; uDeviceID : UINT_PTR -> "sptr"
; pmoc : MIDIOUTCAPSW* out -> "var"
; cbmoc : DWORD -> "int"
; ※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 midiOutGetDevCapsW(UINT_PTR uDeviceID, MIDIOUTCAPSW* pmoc, DWORD cbmoc)
#uselib "WINMM.dll"
#cfunc global midiOutGetDevCapsW "midiOutGetDevCapsW" intptr, var, int
; res = midiOutGetDevCapsW(uDeviceID, pmoc, cbmoc)
; uDeviceID : UINT_PTR -> "intptr"
; pmoc : MIDIOUTCAPSW* out -> "var"
; cbmoc : DWORD -> "int"
; ※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 (
	winmm = windows.NewLazySystemDLL("WINMM.dll")
	procmidiOutGetDevCapsW = winmm.NewProc("midiOutGetDevCapsW")
)

// uDeviceID (UINT_PTR), pmoc (MIDIOUTCAPSW* out), cbmoc (DWORD)
r1, _, err := procmidiOutGetDevCapsW.Call(
	uintptr(uDeviceID),
	uintptr(pmoc),
	uintptr(cbmoc),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function midiOutGetDevCapsW(
  uDeviceID: NativeUInt;   // UINT_PTR
  pmoc: Pointer;   // MIDIOUTCAPSW* out
  cbmoc: DWORD   // DWORD
): DWORD; stdcall;
  external 'WINMM.dll' name 'midiOutGetDevCapsW';

result := DllCall("WINMM\midiOutGetDevCapsW"
    , "UPtr", uDeviceID   ; UINT_PTR
    , "Ptr", pmoc   ; MIDIOUTCAPSW* out
    , "UInt", cbmoc   ; DWORD
    , "UInt")   ; return: DWORD

●midiOutGetDevCapsW(uDeviceID, pmoc, cbmoc) = DLL("WINMM.dll", "dword midiOutGetDevCapsW(int, void*, dword)")
# 呼び出し: midiOutGetDevCapsW(uDeviceID, pmoc, cbmoc)
# uDeviceID : UINT_PTR -> "int"
# pmoc : MIDIOUTCAPSW* out -> "void*"
# cbmoc : DWORD -> "dword"
# 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。