mixerGetDevCapsW

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

DWORD mixerGetDevCapsW(
    UINT_PTR uMxId,
    MIXERCAPSW* pmxcaps,
    DWORD cbmxcaps
);

<DllImport("WINMM.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function mixerGetDevCapsW(
    uMxId As UIntPtr,   ' UINT_PTR
    pmxcaps As IntPtr,   ' MIXERCAPSW* out
    cbmxcaps As UInteger   ' DWORD
) As UInteger
End Function

' uMxId : UINT_PTR
' pmxcaps : MIXERCAPSW* out
' cbmxcaps : DWORD
Declare PtrSafe Function mixerGetDevCapsW Lib "winmm" ( _
    ByVal uMxId As LongPtr, _
    ByVal pmxcaps As LongPtr, _
    ByVal cbmxcaps 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

mixerGetDevCapsW = ctypes.windll.winmm.mixerGetDevCapsW
mixerGetDevCapsW.restype = wintypes.DWORD
mixerGetDevCapsW.argtypes = [
    ctypes.c_size_t,  # uMxId : UINT_PTR
    ctypes.c_void_p,  # pmxcaps : MIXERCAPSW* out
    wintypes.DWORD,  # cbmxcaps : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINMM.dll')
mixerGetDevCapsW = Fiddle::Function.new(
  lib['mixerGetDevCapsW'],
  [
    Fiddle::TYPE_UINTPTR_T,  # uMxId : UINT_PTR
    Fiddle::TYPE_VOIDP,  # pmxcaps : MIXERCAPSW* out
    -Fiddle::TYPE_INT,  # cbmxcaps : DWORD
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "winmm")]
extern "system" {
    fn mixerGetDevCapsW(
        uMxId: usize,  // UINT_PTR
        pmxcaps: *mut MIXERCAPSW,  // MIXERCAPSW* out
        cbmxcaps: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINMM.dll", CharSet = CharSet.Unicode)]
public static extern uint mixerGetDevCapsW(UIntPtr uMxId, IntPtr pmxcaps, uint cbmxcaps);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINMM_mixerGetDevCapsW' -Namespace Win32 -PassThru
# $api::mixerGetDevCapsW(uMxId, pmxcaps, cbmxcaps)

#uselib "WINMM.dll"
#func global mixerGetDevCapsW "mixerGetDevCapsW" wptr, wptr, wptr
; mixerGetDevCapsW uMxId, varptr(pmxcaps), cbmxcaps   ; 戻り値は stat
; uMxId : UINT_PTR -> "wptr"
; pmxcaps : MIXERCAPSW* out -> "wptr"
; cbmxcaps : 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 mixerGetDevCapsW "mixerGetDevCapsW" sptr, var, int
; res = mixerGetDevCapsW(uMxId, pmxcaps, cbmxcaps)
; uMxId : UINT_PTR -> "sptr"
; pmxcaps : MIXERCAPSW* out -> "var"
; cbmxcaps : 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 mixerGetDevCapsW(UINT_PTR uMxId, MIXERCAPSW* pmxcaps, DWORD cbmxcaps)
#uselib "WINMM.dll"
#cfunc global mixerGetDevCapsW "mixerGetDevCapsW" intptr, var, int
; res = mixerGetDevCapsW(uMxId, pmxcaps, cbmxcaps)
; uMxId : UINT_PTR -> "intptr"
; pmxcaps : MIXERCAPSW* out -> "var"
; cbmxcaps : 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")
	procmixerGetDevCapsW = winmm.NewProc("mixerGetDevCapsW")
)

// uMxId (UINT_PTR), pmxcaps (MIXERCAPSW* out), cbmxcaps (DWORD)
r1, _, err := procmixerGetDevCapsW.Call(
	uintptr(uMxId),
	uintptr(pmxcaps),
	uintptr(cbmxcaps),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function mixerGetDevCapsW(
  uMxId: NativeUInt;   // UINT_PTR
  pmxcaps: Pointer;   // MIXERCAPSW* out
  cbmxcaps: DWORD   // DWORD
): DWORD; stdcall;
  external 'WINMM.dll' name 'mixerGetDevCapsW';

result := DllCall("WINMM\mixerGetDevCapsW"
    , "UPtr", uMxId   ; UINT_PTR
    , "Ptr", pmxcaps   ; MIXERCAPSW* out
    , "UInt", cbmxcaps   ; DWORD
    , "UInt")   ; return: DWORD

●mixerGetDevCapsW(uMxId, pmxcaps, cbmxcaps) = DLL("WINMM.dll", "dword mixerGetDevCapsW(int, void*, dword)")
# 呼び出し: mixerGetDevCapsW(uMxId, pmxcaps, cbmxcaps)
# uMxId : UINT_PTR -> "int"
# pmxcaps : MIXERCAPSW* out -> "void*"
# cbmxcaps : 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。