mmioSeek

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

INT mmioSeek(
    HMMIO hmmio,
    INT lOffset,
    INT iOrigin
);

<DllImport("WINMM.dll", ExactSpelling:=True)>
Public Shared Function mmioSeek(
    hmmio As IntPtr,   ' HMMIO
    lOffset As Integer,   ' INT
    iOrigin As Integer   ' INT
) As Integer
End Function

' hmmio : HMMIO
' lOffset : INT
' iOrigin : INT
Declare PtrSafe Function mmioSeek Lib "winmm" ( _
    ByVal hmmio As LongPtr, _
    ByVal lOffset As Long, _
    ByVal iOrigin 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

mmioSeek = ctypes.windll.winmm.mmioSeek
mmioSeek.restype = ctypes.c_int
mmioSeek.argtypes = [
    wintypes.HANDLE,  # hmmio : HMMIO
    ctypes.c_int,  # lOffset : INT
    ctypes.c_int,  # iOrigin : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINMM.dll')
mmioSeek = Fiddle::Function.new(
  lib['mmioSeek'],
  [
    Fiddle::TYPE_VOIDP,  # hmmio : HMMIO
    Fiddle::TYPE_INT,  # lOffset : INT
    Fiddle::TYPE_INT,  # iOrigin : INT
  ],
  Fiddle::TYPE_INT)

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

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

#uselib "WINMM.dll"
#func global mmioSeek "mmioSeek" sptr, sptr, sptr
; mmioSeek hmmio, lOffset, iOrigin   ; 戻り値は stat
; hmmio : HMMIO -> "sptr"
; lOffset : INT -> "sptr"
; iOrigin : 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 mmioSeek "mmioSeek" sptr, int, int
; res = mmioSeek(hmmio, lOffset, iOrigin)
; hmmio : HMMIO -> "sptr"
; lOffset : INT -> "int"
; iOrigin : INT -> "int"

; INT mmioSeek(HMMIO hmmio, INT lOffset, INT iOrigin)
#uselib "WINMM.dll"
#cfunc global mmioSeek "mmioSeek" intptr, int, int
; res = mmioSeek(hmmio, lOffset, iOrigin)
; hmmio : HMMIO -> "intptr"
; lOffset : INT -> "int"
; iOrigin : INT -> "int"

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

var (
	winmm = windows.NewLazySystemDLL("WINMM.dll")
	procmmioSeek = winmm.NewProc("mmioSeek")
)

// hmmio (HMMIO), lOffset (INT), iOrigin (INT)
r1, _, err := procmmioSeek.Call(
	uintptr(hmmio),
	uintptr(lOffset),
	uintptr(iOrigin),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function mmioSeek(
  hmmio: THandle;   // HMMIO
  lOffset: Integer;   // INT
  iOrigin: Integer   // INT
): Integer; stdcall;
  external 'WINMM.dll' name 'mmioSeek';

result := DllCall("WINMM\mmioSeek"
    , "Ptr", hmmio   ; HMMIO
    , "Int", lOffset   ; INT
    , "Int", iOrigin   ; INT
    , "Int")   ; return: INT

●mmioSeek(hmmio, lOffset, iOrigin) = DLL("WINMM.dll", "int mmioSeek(void*, int, int)")
# 呼び出し: mmioSeek(hmmio, lOffset, iOrigin)
# hmmio : HMMIO -> "void*"
# lOffset : INT -> "int"
# iOrigin : 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)。