mixerMessage

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

DWORD mixerMessage(
    HMIXER hmx,   // optional
    DWORD uMsg,
    UINT_PTR dwParam1,   // optional
    UINT_PTR dwParam2   // optional
);

<DllImport("WINMM.dll", ExactSpelling:=True)>
Public Shared Function mixerMessage(
    hmx As IntPtr,   ' HMIXER optional
    uMsg As UInteger,   ' DWORD
    dwParam1 As UIntPtr,   ' UINT_PTR optional
    dwParam2 As UIntPtr   ' UINT_PTR optional
) As UInteger
End Function

' hmx : HMIXER optional
' uMsg : DWORD
' dwParam1 : UINT_PTR optional
' dwParam2 : UINT_PTR optional
Declare PtrSafe Function mixerMessage Lib "winmm" ( _
    ByVal hmx As LongPtr, _
    ByVal uMsg As Long, _
    ByVal dwParam1 As LongPtr, _
    ByVal dwParam2 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

mixerMessage = ctypes.windll.winmm.mixerMessage
mixerMessage.restype = wintypes.DWORD
mixerMessage.argtypes = [
    wintypes.HANDLE,  # hmx : HMIXER optional
    wintypes.DWORD,  # uMsg : DWORD
    ctypes.c_size_t,  # dwParam1 : UINT_PTR optional
    ctypes.c_size_t,  # dwParam2 : UINT_PTR optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINMM.dll')
mixerMessage = Fiddle::Function.new(
  lib['mixerMessage'],
  [
    Fiddle::TYPE_VOIDP,  # hmx : HMIXER optional
    -Fiddle::TYPE_INT,  # uMsg : DWORD
    Fiddle::TYPE_UINTPTR_T,  # dwParam1 : UINT_PTR optional
    Fiddle::TYPE_UINTPTR_T,  # dwParam2 : UINT_PTR optional
  ],
  -Fiddle::TYPE_INT)

#[link(name = "winmm")]
extern "system" {
    fn mixerMessage(
        hmx: *mut core::ffi::c_void,  // HMIXER optional
        uMsg: u32,  // DWORD
        dwParam1: usize,  // UINT_PTR optional
        dwParam2: usize  // UINT_PTR optional
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINMM.dll")]
public static extern uint mixerMessage(IntPtr hmx, uint uMsg, UIntPtr dwParam1, UIntPtr dwParam2);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINMM_mixerMessage' -Namespace Win32 -PassThru
# $api::mixerMessage(hmx, uMsg, dwParam1, dwParam2)

#uselib "WINMM.dll"
#func global mixerMessage "mixerMessage" sptr, sptr, sptr, sptr
; mixerMessage hmx, uMsg, dwParam1, dwParam2   ; 戻り値は stat
; hmx : HMIXER optional -> "sptr"
; uMsg : DWORD -> "sptr"
; dwParam1 : UINT_PTR optional -> "sptr"
; dwParam2 : UINT_PTR optional -> "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 mixerMessage "mixerMessage" sptr, int, sptr, sptr
; res = mixerMessage(hmx, uMsg, dwParam1, dwParam2)
; hmx : HMIXER optional -> "sptr"
; uMsg : DWORD -> "int"
; dwParam1 : UINT_PTR optional -> "sptr"
; dwParam2 : UINT_PTR optional -> "sptr"

; DWORD mixerMessage(HMIXER hmx, DWORD uMsg, UINT_PTR dwParam1, UINT_PTR dwParam2)
#uselib "WINMM.dll"
#cfunc global mixerMessage "mixerMessage" intptr, int, intptr, intptr
; res = mixerMessage(hmx, uMsg, dwParam1, dwParam2)
; hmx : HMIXER optional -> "intptr"
; uMsg : DWORD -> "int"
; dwParam1 : UINT_PTR optional -> "intptr"
; dwParam2 : UINT_PTR optional -> "intptr"

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

var (
	winmm = windows.NewLazySystemDLL("WINMM.dll")
	procmixerMessage = winmm.NewProc("mixerMessage")
)

// hmx (HMIXER optional), uMsg (DWORD), dwParam1 (UINT_PTR optional), dwParam2 (UINT_PTR optional)
r1, _, err := procmixerMessage.Call(
	uintptr(hmx),
	uintptr(uMsg),
	uintptr(dwParam1),
	uintptr(dwParam2),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function mixerMessage(
  hmx: THandle;   // HMIXER optional
  uMsg: DWORD;   // DWORD
  dwParam1: NativeUInt;   // UINT_PTR optional
  dwParam2: NativeUInt   // UINT_PTR optional
): DWORD; stdcall;
  external 'WINMM.dll' name 'mixerMessage';

result := DllCall("WINMM\mixerMessage"
    , "Ptr", hmx   ; HMIXER optional
    , "UInt", uMsg   ; DWORD
    , "UPtr", dwParam1   ; UINT_PTR optional
    , "UPtr", dwParam2   ; UINT_PTR optional
    , "UInt")   ; return: DWORD

●mixerMessage(hmx, uMsg, dwParam1, dwParam2) = DLL("WINMM.dll", "dword mixerMessage(void*, dword, int, int)")
# 呼び出し: mixerMessage(hmx, uMsg, dwParam1, dwParam2)
# hmx : HMIXER optional -> "void*"
# uMsg : DWORD -> "dword"
# dwParam1 : UINT_PTR optional -> "int"
# dwParam2 : UINT_PTR optional -> "int"
# 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)。