mmioGetInfo

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

DWORD mmioGetInfo(
    HMMIO hmmio,
    MMIOINFO* pmmioinfo,
    DWORD fuInfo
);

<DllImport("WINMM.dll", ExactSpelling:=True)>
Public Shared Function mmioGetInfo(
    hmmio As IntPtr,   ' HMMIO
    pmmioinfo As IntPtr,   ' MMIOINFO* out
    fuInfo As UInteger   ' DWORD
) As UInteger
End Function

' hmmio : HMMIO
' pmmioinfo : MMIOINFO* out
' fuInfo : DWORD
Declare PtrSafe Function mmioGetInfo Lib "winmm" ( _
    ByVal hmmio As LongPtr, _
    ByVal pmmioinfo As LongPtr, _
    ByVal fuInfo As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

mmioGetInfo = ctypes.windll.winmm.mmioGetInfo
mmioGetInfo.restype = wintypes.DWORD
mmioGetInfo.argtypes = [
    wintypes.HANDLE,  # hmmio : HMMIO
    ctypes.c_void_p,  # pmmioinfo : MMIOINFO* out
    wintypes.DWORD,  # fuInfo : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINMM.dll')
mmioGetInfo = Fiddle::Function.new(
  lib['mmioGetInfo'],
  [
    Fiddle::TYPE_VOIDP,  # hmmio : HMMIO
    Fiddle::TYPE_VOIDP,  # pmmioinfo : MMIOINFO* out
    -Fiddle::TYPE_INT,  # fuInfo : DWORD
  ],
  -Fiddle::TYPE_INT)

#[link(name = "winmm")]
extern "system" {
    fn mmioGetInfo(
        hmmio: *mut core::ffi::c_void,  // HMMIO
        pmmioinfo: *mut MMIOINFO,  // MMIOINFO* out
        fuInfo: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINMM.dll")]
public static extern uint mmioGetInfo(IntPtr hmmio, IntPtr pmmioinfo, uint fuInfo);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINMM_mmioGetInfo' -Namespace Win32 -PassThru
# $api::mmioGetInfo(hmmio, pmmioinfo, fuInfo)

#uselib "WINMM.dll"
#func global mmioGetInfo "mmioGetInfo" sptr, sptr, sptr
; mmioGetInfo hmmio, varptr(pmmioinfo), fuInfo   ; 戻り値は stat
; hmmio : HMMIO -> "sptr"
; pmmioinfo : MMIOINFO* out -> "sptr"
; fuInfo : DWORD -> "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 "WINMM.dll"
#cfunc global mmioGetInfo "mmioGetInfo" sptr, var, int
; res = mmioGetInfo(hmmio, pmmioinfo, fuInfo)
; hmmio : HMMIO -> "sptr"
; pmmioinfo : MMIOINFO* out -> "var"
; fuInfo : 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 mmioGetInfo(HMMIO hmmio, MMIOINFO* pmmioinfo, DWORD fuInfo)
#uselib "WINMM.dll"
#cfunc global mmioGetInfo "mmioGetInfo" intptr, var, int
; res = mmioGetInfo(hmmio, pmmioinfo, fuInfo)
; hmmio : HMMIO -> "intptr"
; pmmioinfo : MMIOINFO* out -> "var"
; fuInfo : 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")
	procmmioGetInfo = winmm.NewProc("mmioGetInfo")
)

// hmmio (HMMIO), pmmioinfo (MMIOINFO* out), fuInfo (DWORD)
r1, _, err := procmmioGetInfo.Call(
	uintptr(hmmio),
	uintptr(pmmioinfo),
	uintptr(fuInfo),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function mmioGetInfo(
  hmmio: THandle;   // HMMIO
  pmmioinfo: Pointer;   // MMIOINFO* out
  fuInfo: DWORD   // DWORD
): DWORD; stdcall;
  external 'WINMM.dll' name 'mmioGetInfo';

result := DllCall("WINMM\mmioGetInfo"
    , "Ptr", hmmio   ; HMMIO
    , "Ptr", pmmioinfo   ; MMIOINFO* out
    , "UInt", fuInfo   ; DWORD
    , "UInt")   ; return: DWORD

●mmioGetInfo(hmmio, pmmioinfo, fuInfo) = DLL("WINMM.dll", "dword mmioGetInfo(void*, void*, dword)")
# 呼び出し: mmioGetInfo(hmmio, pmmioinfo, fuInfo)
# hmmio : HMMIO -> "void*"
# pmmioinfo : MMIOINFO* out -> "void*"
# fuInfo : 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)。