mmioRead

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

INT mmioRead(
    HMMIO hmmio,
    CHAR* pch,
    INT cch
);

<DllImport("WINMM.dll", ExactSpelling:=True)>
Public Shared Function mmioRead(
    hmmio As IntPtr,   ' HMMIO
    pch As IntPtr,   ' CHAR* out
    cch As Integer   ' INT
) As Integer
End Function

' hmmio : HMMIO
' pch : CHAR* out
' cch : INT
Declare PtrSafe Function mmioRead Lib "winmm" ( _
    ByVal hmmio As LongPtr, _
    ByVal pch As LongPtr, _
    ByVal cch 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

mmioRead = ctypes.windll.winmm.mmioRead
mmioRead.restype = ctypes.c_int
mmioRead.argtypes = [
    wintypes.HANDLE,  # hmmio : HMMIO
    ctypes.POINTER(ctypes.c_byte),  # pch : CHAR* out
    ctypes.c_int,  # cch : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINMM.dll')
mmioRead = Fiddle::Function.new(
  lib['mmioRead'],
  [
    Fiddle::TYPE_VOIDP,  # hmmio : HMMIO
    Fiddle::TYPE_VOIDP,  # pch : CHAR* out
    Fiddle::TYPE_INT,  # cch : INT
  ],
  Fiddle::TYPE_INT)

#[link(name = "winmm")]
extern "system" {
    fn mmioRead(
        hmmio: *mut core::ffi::c_void,  // HMMIO
        pch: *mut i8,  // CHAR* out
        cch: i32  // INT
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINMM.dll")]
public static extern int mmioRead(IntPtr hmmio, IntPtr pch, int cch);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINMM_mmioRead' -Namespace Win32 -PassThru
# $api::mmioRead(hmmio, pch, cch)

#uselib "WINMM.dll"
#func global mmioRead "mmioRead" sptr, sptr, sptr
; mmioRead hmmio, varptr(pch), cch   ; 戻り値は stat
; hmmio : HMMIO -> "sptr"
; pch : CHAR* out -> "sptr"
; cch : INT -> "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 mmioRead "mmioRead" sptr, var, int
; res = mmioRead(hmmio, pch, cch)
; hmmio : HMMIO -> "sptr"
; pch : CHAR* out -> "var"
; cch : INT -> "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。

; INT mmioRead(HMMIO hmmio, CHAR* pch, INT cch)
#uselib "WINMM.dll"
#cfunc global mmioRead "mmioRead" intptr, var, int
; res = mmioRead(hmmio, pch, cch)
; hmmio : HMMIO -> "intptr"
; pch : CHAR* out -> "var"
; cch : INT -> "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")
	procmmioRead = winmm.NewProc("mmioRead")
)

// hmmio (HMMIO), pch (CHAR* out), cch (INT)
r1, _, err := procmmioRead.Call(
	uintptr(hmmio),
	uintptr(pch),
	uintptr(cch),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function mmioRead(
  hmmio: THandle;   // HMMIO
  pch: Pointer;   // CHAR* out
  cch: Integer   // INT
): Integer; stdcall;
  external 'WINMM.dll' name 'mmioRead';

result := DllCall("WINMM\mmioRead"
    , "Ptr", hmmio   ; HMMIO
    , "Ptr", pch   ; CHAR* out
    , "Int", cch   ; INT
    , "Int")   ; return: INT

●mmioRead(hmmio, pch, cch) = DLL("WINMM.dll", "int mmioRead(void*, void*, int)")
# 呼び出し: mmioRead(hmmio, pch, cch)
# hmmio : HMMIO -> "void*"
# pch : CHAR* out -> "void*"
# cch : INT -> "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)。