midiOutMessage

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

DWORD midiOutMessage(
    HMIDIOUT hmo,   // optional
    DWORD uMsg,
    UINT_PTR dw1,   // optional
    UINT_PTR dw2   // optional
);

<DllImport("WINMM.dll", ExactSpelling:=True)>
Public Shared Function midiOutMessage(
    hmo As IntPtr,   ' HMIDIOUT optional
    uMsg As UInteger,   ' DWORD
    dw1 As UIntPtr,   ' UINT_PTR optional
    dw2 As UIntPtr   ' UINT_PTR optional
) As UInteger
End Function

' hmo : HMIDIOUT optional
' uMsg : DWORD
' dw1 : UINT_PTR optional
' dw2 : UINT_PTR optional
Declare PtrSafe Function midiOutMessage Lib "winmm" ( _
    ByVal hmo As LongPtr, _
    ByVal uMsg As Long, _
    ByVal dw1 As LongPtr, _
    ByVal dw2 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

midiOutMessage = ctypes.windll.winmm.midiOutMessage
midiOutMessage.restype = wintypes.DWORD
midiOutMessage.argtypes = [
    wintypes.HANDLE,  # hmo : HMIDIOUT optional
    wintypes.DWORD,  # uMsg : DWORD
    ctypes.c_size_t,  # dw1 : UINT_PTR optional
    ctypes.c_size_t,  # dw2 : UINT_PTR optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINMM.dll')
midiOutMessage = Fiddle::Function.new(
  lib['midiOutMessage'],
  [
    Fiddle::TYPE_VOIDP,  # hmo : HMIDIOUT optional
    -Fiddle::TYPE_INT,  # uMsg : DWORD
    Fiddle::TYPE_UINTPTR_T,  # dw1 : UINT_PTR optional
    Fiddle::TYPE_UINTPTR_T,  # dw2 : UINT_PTR optional
  ],
  -Fiddle::TYPE_INT)

#[link(name = "winmm")]
extern "system" {
    fn midiOutMessage(
        hmo: *mut core::ffi::c_void,  // HMIDIOUT optional
        uMsg: u32,  // DWORD
        dw1: usize,  // UINT_PTR optional
        dw2: usize  // UINT_PTR optional
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINMM.dll")]
public static extern uint midiOutMessage(IntPtr hmo, uint uMsg, UIntPtr dw1, UIntPtr dw2);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINMM_midiOutMessage' -Namespace Win32 -PassThru
# $api::midiOutMessage(hmo, uMsg, dw1, dw2)

#uselib "WINMM.dll"
#func global midiOutMessage "midiOutMessage" sptr, sptr, sptr, sptr
; midiOutMessage hmo, uMsg, dw1, dw2   ; 戻り値は stat
; hmo : HMIDIOUT optional -> "sptr"
; uMsg : DWORD -> "sptr"
; dw1 : UINT_PTR optional -> "sptr"
; dw2 : 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 midiOutMessage "midiOutMessage" sptr, int, sptr, sptr
; res = midiOutMessage(hmo, uMsg, dw1, dw2)
; hmo : HMIDIOUT optional -> "sptr"
; uMsg : DWORD -> "int"
; dw1 : UINT_PTR optional -> "sptr"
; dw2 : UINT_PTR optional -> "sptr"

; DWORD midiOutMessage(HMIDIOUT hmo, DWORD uMsg, UINT_PTR dw1, UINT_PTR dw2)
#uselib "WINMM.dll"
#cfunc global midiOutMessage "midiOutMessage" intptr, int, intptr, intptr
; res = midiOutMessage(hmo, uMsg, dw1, dw2)
; hmo : HMIDIOUT optional -> "intptr"
; uMsg : DWORD -> "int"
; dw1 : UINT_PTR optional -> "intptr"
; dw2 : UINT_PTR optional -> "intptr"

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

var (
	winmm = windows.NewLazySystemDLL("WINMM.dll")
	procmidiOutMessage = winmm.NewProc("midiOutMessage")
)

// hmo (HMIDIOUT optional), uMsg (DWORD), dw1 (UINT_PTR optional), dw2 (UINT_PTR optional)
r1, _, err := procmidiOutMessage.Call(
	uintptr(hmo),
	uintptr(uMsg),
	uintptr(dw1),
	uintptr(dw2),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function midiOutMessage(
  hmo: THandle;   // HMIDIOUT optional
  uMsg: DWORD;   // DWORD
  dw1: NativeUInt;   // UINT_PTR optional
  dw2: NativeUInt   // UINT_PTR optional
): DWORD; stdcall;
  external 'WINMM.dll' name 'midiOutMessage';

result := DllCall("WINMM\midiOutMessage"
    , "Ptr", hmo   ; HMIDIOUT optional
    , "UInt", uMsg   ; DWORD
    , "UPtr", dw1   ; UINT_PTR optional
    , "UPtr", dw2   ; UINT_PTR optional
    , "UInt")   ; return: DWORD

●midiOutMessage(hmo, uMsg, dw1, dw2) = DLL("WINMM.dll", "dword midiOutMessage(void*, dword, int, int)")
# 呼び出し: midiOutMessage(hmo, uMsg, dw1, dw2)
# hmo : HMIDIOUT optional -> "void*"
# uMsg : DWORD -> "dword"
# dw1 : UINT_PTR optional -> "int"
# dw2 : 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)。