mixerGetLineInfoA

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

DWORD mixerGetLineInfoA(
    HMIXEROBJ hmxobj,   // optional
    MIXERLINEA* pmxl,
    DWORD fdwInfo
);

<DllImport("WINMM.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function mixerGetLineInfoA(
    hmxobj As IntPtr,   ' HMIXEROBJ optional
    pmxl As IntPtr,   ' MIXERLINEA* in/out
    fdwInfo As UInteger   ' DWORD
) As UInteger
End Function

' hmxobj : HMIXEROBJ optional
' pmxl : MIXERLINEA* in/out
' fdwInfo : DWORD
Declare PtrSafe Function mixerGetLineInfoA Lib "winmm" ( _
    ByVal hmxobj As LongPtr, _
    ByVal pmxl As LongPtr, _
    ByVal fdwInfo 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

mixerGetLineInfoA = ctypes.windll.winmm.mixerGetLineInfoA
mixerGetLineInfoA.restype = wintypes.DWORD
mixerGetLineInfoA.argtypes = [
    wintypes.HANDLE,  # hmxobj : HMIXEROBJ optional
    ctypes.c_void_p,  # pmxl : MIXERLINEA* in/out
    wintypes.DWORD,  # fdwInfo : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINMM.dll')
mixerGetLineInfoA = Fiddle::Function.new(
  lib['mixerGetLineInfoA'],
  [
    Fiddle::TYPE_VOIDP,  # hmxobj : HMIXEROBJ optional
    Fiddle::TYPE_VOIDP,  # pmxl : MIXERLINEA* in/out
    -Fiddle::TYPE_INT,  # fdwInfo : DWORD
  ],
  -Fiddle::TYPE_INT)

#[link(name = "winmm")]
extern "system" {
    fn mixerGetLineInfoA(
        hmxobj: *mut core::ffi::c_void,  // HMIXEROBJ optional
        pmxl: *mut MIXERLINEA,  // MIXERLINEA* in/out
        fdwInfo: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINMM.dll", CharSet = CharSet.Ansi)]
public static extern uint mixerGetLineInfoA(IntPtr hmxobj, IntPtr pmxl, uint fdwInfo);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINMM_mixerGetLineInfoA' -Namespace Win32 -PassThru
# $api::mixerGetLineInfoA(hmxobj, pmxl, fdwInfo)

#uselib "WINMM.dll"
#func global mixerGetLineInfoA "mixerGetLineInfoA" sptr, sptr, sptr
; mixerGetLineInfoA hmxobj, varptr(pmxl), fdwInfo   ; 戻り値は stat
; hmxobj : HMIXEROBJ optional -> "sptr"
; pmxl : MIXERLINEA* in/out -> "sptr"
; fdwInfo : 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 mixerGetLineInfoA "mixerGetLineInfoA" sptr, var, int
; res = mixerGetLineInfoA(hmxobj, pmxl, fdwInfo)
; hmxobj : HMIXEROBJ optional -> "sptr"
; pmxl : MIXERLINEA* in/out -> "var"
; fdwInfo : 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。

; DWORD mixerGetLineInfoA(HMIXEROBJ hmxobj, MIXERLINEA* pmxl, DWORD fdwInfo)
#uselib "WINMM.dll"
#cfunc global mixerGetLineInfoA "mixerGetLineInfoA" intptr, var, int
; res = mixerGetLineInfoA(hmxobj, pmxl, fdwInfo)
; hmxobj : HMIXEROBJ optional -> "intptr"
; pmxl : MIXERLINEA* in/out -> "var"
; fdwInfo : 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")
	procmixerGetLineInfoA = winmm.NewProc("mixerGetLineInfoA")
)

// hmxobj (HMIXEROBJ optional), pmxl (MIXERLINEA* in/out), fdwInfo (DWORD)
r1, _, err := procmixerGetLineInfoA.Call(
	uintptr(hmxobj),
	uintptr(pmxl),
	uintptr(fdwInfo),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function mixerGetLineInfoA(
  hmxobj: THandle;   // HMIXEROBJ optional
  pmxl: Pointer;   // MIXERLINEA* in/out
  fdwInfo: DWORD   // DWORD
): DWORD; stdcall;
  external 'WINMM.dll' name 'mixerGetLineInfoA';

result := DllCall("WINMM\mixerGetLineInfoA"
    , "Ptr", hmxobj   ; HMIXEROBJ optional
    , "Ptr", pmxl   ; MIXERLINEA* in/out
    , "UInt", fdwInfo   ; DWORD
    , "UInt")   ; return: DWORD

●mixerGetLineInfoA(hmxobj, pmxl, fdwInfo) = DLL("WINMM.dll", "dword mixerGetLineInfoA(void*, void*, dword)")
# 呼び出し: mixerGetLineInfoA(hmxobj, pmxl, fdwInfo)
# hmxobj : HMIXEROBJ optional -> "void*"
# pmxl : MIXERLINEA* in/out -> "void*"
# fdwInfo : 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)。