mciSendStringA

// WINMM.dll  (ANSI / -A)
#include <windows.h>

DWORD mciSendStringA(
    LPCSTR lpstrCommand,
    LPSTR lpstrReturnString,   // optional
    DWORD uReturnLength,
    HWND hwndCallback   // optional
);

<DllImport("WINMM.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function mciSendStringA(
    <MarshalAs(UnmanagedType.LPStr)> lpstrCommand As String,   ' LPCSTR
    <MarshalAs(UnmanagedType.LPStr)> lpstrReturnString As System.Text.StringBuilder,   ' LPSTR optional, out
    uReturnLength As UInteger,   ' DWORD
    hwndCallback As IntPtr   ' HWND optional
) As UInteger
End Function

' lpstrCommand : LPCSTR
' lpstrReturnString : LPSTR optional, out
' uReturnLength : DWORD
' hwndCallback : HWND optional
Declare PtrSafe Function mciSendStringA Lib "winmm" ( _
    ByVal lpstrCommand As String, _
    ByVal lpstrReturnString As String, _
    ByVal uReturnLength As Long, _
    ByVal hwndCallback 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

mciSendStringA = ctypes.windll.winmm.mciSendStringA
mciSendStringA.restype = wintypes.DWORD
mciSendStringA.argtypes = [
    wintypes.LPCSTR,  # lpstrCommand : LPCSTR
    wintypes.LPSTR,  # lpstrReturnString : LPSTR optional, out
    wintypes.DWORD,  # uReturnLength : DWORD
    wintypes.HANDLE,  # hwndCallback : HWND optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINMM.dll')
mciSendStringA = Fiddle::Function.new(
  lib['mciSendStringA'],
  [
    Fiddle::TYPE_VOIDP,  # lpstrCommand : LPCSTR
    Fiddle::TYPE_VOIDP,  # lpstrReturnString : LPSTR optional, out
    -Fiddle::TYPE_INT,  # uReturnLength : DWORD
    Fiddle::TYPE_VOIDP,  # hwndCallback : HWND optional
  ],
  -Fiddle::TYPE_INT)

#[link(name = "winmm")]
extern "system" {
    fn mciSendStringA(
        lpstrCommand: *const u8,  // LPCSTR
        lpstrReturnString: *mut u8,  // LPSTR optional, out
        uReturnLength: u32,  // DWORD
        hwndCallback: *mut core::ffi::c_void  // HWND optional
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINMM.dll", CharSet = CharSet.Ansi)]
public static extern uint mciSendStringA([MarshalAs(UnmanagedType.LPStr)] string lpstrCommand, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder lpstrReturnString, uint uReturnLength, IntPtr hwndCallback);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINMM_mciSendStringA' -Namespace Win32 -PassThru
# $api::mciSendStringA(lpstrCommand, lpstrReturnString, uReturnLength, hwndCallback)

#uselib "WINMM.dll"
#func global mciSendStringA "mciSendStringA" sptr, sptr, sptr, sptr
; mciSendStringA lpstrCommand, varptr(lpstrReturnString), uReturnLength, hwndCallback   ; 戻り値は stat
; lpstrCommand : LPCSTR -> "sptr"
; lpstrReturnString : LPSTR optional, out -> "sptr"
; uReturnLength : DWORD -> "sptr"
; hwndCallback : HWND 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 mciSendStringA "mciSendStringA" str, var, int, sptr
; res = mciSendStringA(lpstrCommand, lpstrReturnString, uReturnLength, hwndCallback)
; lpstrCommand : LPCSTR -> "str"
; lpstrReturnString : LPSTR optional, out -> "var"
; uReturnLength : DWORD -> "int"
; hwndCallback : HWND optional -> "sptr"
; ※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 mciSendStringA(LPCSTR lpstrCommand, LPSTR lpstrReturnString, DWORD uReturnLength, HWND hwndCallback)
#uselib "WINMM.dll"
#cfunc global mciSendStringA "mciSendStringA" str, var, int, intptr
; res = mciSendStringA(lpstrCommand, lpstrReturnString, uReturnLength, hwndCallback)
; lpstrCommand : LPCSTR -> "str"
; lpstrReturnString : LPSTR optional, out -> "var"
; uReturnLength : DWORD -> "int"
; hwndCallback : HWND optional -> "intptr"
; ※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")
	procmciSendStringA = winmm.NewProc("mciSendStringA")
)

// lpstrCommand (LPCSTR), lpstrReturnString (LPSTR optional, out), uReturnLength (DWORD), hwndCallback (HWND optional)
r1, _, err := procmciSendStringA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpstrCommand))),
	uintptr(lpstrReturnString),
	uintptr(uReturnLength),
	uintptr(hwndCallback),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function mciSendStringA(
  lpstrCommand: PAnsiChar;   // LPCSTR
  lpstrReturnString: PAnsiChar;   // LPSTR optional, out
  uReturnLength: DWORD;   // DWORD
  hwndCallback: THandle   // HWND optional
): DWORD; stdcall;
  external 'WINMM.dll' name 'mciSendStringA';

result := DllCall("WINMM\mciSendStringA"
    , "AStr", lpstrCommand   ; LPCSTR
    , "Ptr", lpstrReturnString   ; LPSTR optional, out
    , "UInt", uReturnLength   ; DWORD
    , "Ptr", hwndCallback   ; HWND optional
    , "UInt")   ; return: DWORD

●mciSendStringA(lpstrCommand, lpstrReturnString, uReturnLength, hwndCallback) = DLL("WINMM.dll", "dword mciSendStringA(char*, char*, dword, void*)")
# 呼び出し: mciSendStringA(lpstrCommand, lpstrReturnString, uReturnLength, hwndCallback)
# lpstrCommand : LPCSTR -> "char*"
# lpstrReturnString : LPSTR optional, out -> "char*"
# uReturnLength : DWORD -> "dword"
# hwndCallback : HWND optional -> "void*"
# 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)。