auxGetDevCapsA

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

DWORD auxGetDevCapsA(
    UINT_PTR uDeviceID,
    AUXCAPSA* pac,
    DWORD cbac
);

<DllImport("WINMM.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function auxGetDevCapsA(
    uDeviceID As UIntPtr,   ' UINT_PTR
    pac As IntPtr,   ' AUXCAPSA* out
    cbac As UInteger   ' DWORD
) As UInteger
End Function

' uDeviceID : UINT_PTR
' pac : AUXCAPSA* out
' cbac : DWORD
Declare PtrSafe Function auxGetDevCapsA Lib "winmm" ( _
    ByVal uDeviceID As LongPtr, _
    ByVal pac As LongPtr, _
    ByVal cbac 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

auxGetDevCapsA = ctypes.windll.winmm.auxGetDevCapsA
auxGetDevCapsA.restype = wintypes.DWORD
auxGetDevCapsA.argtypes = [
    ctypes.c_size_t,  # uDeviceID : UINT_PTR
    ctypes.c_void_p,  # pac : AUXCAPSA* out
    wintypes.DWORD,  # cbac : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINMM.dll')
auxGetDevCapsA = Fiddle::Function.new(
  lib['auxGetDevCapsA'],
  [
    Fiddle::TYPE_UINTPTR_T,  # uDeviceID : UINT_PTR
    Fiddle::TYPE_VOIDP,  # pac : AUXCAPSA* out
    -Fiddle::TYPE_INT,  # cbac : DWORD
  ],
  -Fiddle::TYPE_INT)

#[link(name = "winmm")]
extern "system" {
    fn auxGetDevCapsA(
        uDeviceID: usize,  // UINT_PTR
        pac: *mut AUXCAPSA,  // AUXCAPSA* out
        cbac: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINMM.dll", CharSet = CharSet.Ansi)]
public static extern uint auxGetDevCapsA(UIntPtr uDeviceID, IntPtr pac, uint cbac);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINMM_auxGetDevCapsA' -Namespace Win32 -PassThru
# $api::auxGetDevCapsA(uDeviceID, pac, cbac)

#uselib "WINMM.dll"
#func global auxGetDevCapsA "auxGetDevCapsA" sptr, sptr, sptr
; auxGetDevCapsA uDeviceID, varptr(pac), cbac   ; 戻り値は stat
; uDeviceID : UINT_PTR -> "sptr"
; pac : AUXCAPSA* out -> "sptr"
; cbac : 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 auxGetDevCapsA "auxGetDevCapsA" sptr, var, int
; res = auxGetDevCapsA(uDeviceID, pac, cbac)
; uDeviceID : UINT_PTR -> "sptr"
; pac : AUXCAPSA* out -> "var"
; cbac : 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 auxGetDevCapsA(UINT_PTR uDeviceID, AUXCAPSA* pac, DWORD cbac)
#uselib "WINMM.dll"
#cfunc global auxGetDevCapsA "auxGetDevCapsA" intptr, var, int
; res = auxGetDevCapsA(uDeviceID, pac, cbac)
; uDeviceID : UINT_PTR -> "intptr"
; pac : AUXCAPSA* out -> "var"
; cbac : 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")
	procauxGetDevCapsA = winmm.NewProc("auxGetDevCapsA")
)

// uDeviceID (UINT_PTR), pac (AUXCAPSA* out), cbac (DWORD)
r1, _, err := procauxGetDevCapsA.Call(
	uintptr(uDeviceID),
	uintptr(pac),
	uintptr(cbac),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function auxGetDevCapsA(
  uDeviceID: NativeUInt;   // UINT_PTR
  pac: Pointer;   // AUXCAPSA* out
  cbac: DWORD   // DWORD
): DWORD; stdcall;
  external 'WINMM.dll' name 'auxGetDevCapsA';

result := DllCall("WINMM\auxGetDevCapsA"
    , "UPtr", uDeviceID   ; UINT_PTR
    , "Ptr", pac   ; AUXCAPSA* out
    , "UInt", cbac   ; DWORD
    , "UInt")   ; return: DWORD

●auxGetDevCapsA(uDeviceID, pac, cbac) = DLL("WINMM.dll", "dword auxGetDevCapsA(int, void*, dword)")
# 呼び出し: auxGetDevCapsA(uDeviceID, pac, cbac)
# uDeviceID : UINT_PTR -> "int"
# pac : AUXCAPSA* out -> "void*"
# cbac : 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)。