mciGetErrorStringA

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

BOOL mciGetErrorStringA(
    DWORD mcierr,
    LPSTR pszText,
    DWORD cchText
);

<DllImport("WINMM.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function mciGetErrorStringA(
    mcierr As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPStr)> pszText As System.Text.StringBuilder,   ' LPSTR out
    cchText As UInteger   ' DWORD
) As Boolean
End Function

' mcierr : DWORD
' pszText : LPSTR out
' cchText : DWORD
Declare PtrSafe Function mciGetErrorStringA Lib "winmm" ( _
    ByVal mcierr As Long, _
    ByVal pszText As String, _
    ByVal cchText 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

mciGetErrorStringA = ctypes.windll.winmm.mciGetErrorStringA
mciGetErrorStringA.restype = wintypes.BOOL
mciGetErrorStringA.argtypes = [
    wintypes.DWORD,  # mcierr : DWORD
    wintypes.LPSTR,  # pszText : LPSTR out
    wintypes.DWORD,  # cchText : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINMM.dll')
mciGetErrorStringA = Fiddle::Function.new(
  lib['mciGetErrorStringA'],
  [
    -Fiddle::TYPE_INT,  # mcierr : DWORD
    Fiddle::TYPE_VOIDP,  # pszText : LPSTR out
    -Fiddle::TYPE_INT,  # cchText : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "winmm")]
extern "system" {
    fn mciGetErrorStringA(
        mcierr: u32,  // DWORD
        pszText: *mut u8,  // LPSTR out
        cchText: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("WINMM.dll", CharSet = CharSet.Ansi)]
public static extern bool mciGetErrorStringA(uint mcierr, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pszText, uint cchText);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINMM_mciGetErrorStringA' -Namespace Win32 -PassThru
# $api::mciGetErrorStringA(mcierr, pszText, cchText)

#uselib "WINMM.dll"
#func global mciGetErrorStringA "mciGetErrorStringA" sptr, sptr, sptr
; mciGetErrorStringA mcierr, varptr(pszText), cchText   ; 戻り値は stat
; mcierr : DWORD -> "sptr"
; pszText : LPSTR out -> "sptr"
; cchText : 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 mciGetErrorStringA "mciGetErrorStringA" int, var, int
; res = mciGetErrorStringA(mcierr, pszText, cchText)
; mcierr : DWORD -> "int"
; pszText : LPSTR out -> "var"
; cchText : 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。

; BOOL mciGetErrorStringA(DWORD mcierr, LPSTR pszText, DWORD cchText)
#uselib "WINMM.dll"
#cfunc global mciGetErrorStringA "mciGetErrorStringA" int, var, int
; res = mciGetErrorStringA(mcierr, pszText, cchText)
; mcierr : DWORD -> "int"
; pszText : LPSTR out -> "var"
; cchText : 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")
	procmciGetErrorStringA = winmm.NewProc("mciGetErrorStringA")
)

// mcierr (DWORD), pszText (LPSTR out), cchText (DWORD)
r1, _, err := procmciGetErrorStringA.Call(
	uintptr(mcierr),
	uintptr(pszText),
	uintptr(cchText),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function mciGetErrorStringA(
  mcierr: DWORD;   // DWORD
  pszText: PAnsiChar;   // LPSTR out
  cchText: DWORD   // DWORD
): BOOL; stdcall;
  external 'WINMM.dll' name 'mciGetErrorStringA';

result := DllCall("WINMM\mciGetErrorStringA"
    , "UInt", mcierr   ; DWORD
    , "Ptr", pszText   ; LPSTR out
    , "UInt", cchText   ; DWORD
    , "Int")   ; return: BOOL

●mciGetErrorStringA(mcierr, pszText, cchText) = DLL("WINMM.dll", "bool mciGetErrorStringA(dword, char*, dword)")
# 呼び出し: mciGetErrorStringA(mcierr, pszText, cchText)
# mcierr : DWORD -> "dword"
# pszText : LPSTR out -> "char*"
# cchText : 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)。