waveOutGetPitch

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

DWORD waveOutGetPitch(
    HWAVEOUT hwo,
    DWORD* pdwPitch
);

<DllImport("WINMM.dll", ExactSpelling:=True)>
Public Shared Function waveOutGetPitch(
    hwo As IntPtr,   ' HWAVEOUT
    <Out> ByRef pdwPitch As UInteger   ' DWORD* out
) As UInteger
End Function

' hwo : HWAVEOUT
' pdwPitch : DWORD* out
Declare PtrSafe Function waveOutGetPitch Lib "winmm" ( _
    ByVal hwo As LongPtr, _
    ByRef pdwPitch 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

waveOutGetPitch = ctypes.windll.winmm.waveOutGetPitch
waveOutGetPitch.restype = wintypes.DWORD
waveOutGetPitch.argtypes = [
    wintypes.HANDLE,  # hwo : HWAVEOUT
    ctypes.POINTER(wintypes.DWORD),  # pdwPitch : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINMM.dll')
waveOutGetPitch = Fiddle::Function.new(
  lib['waveOutGetPitch'],
  [
    Fiddle::TYPE_VOIDP,  # hwo : HWAVEOUT
    Fiddle::TYPE_VOIDP,  # pdwPitch : DWORD* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "winmm")]
extern "system" {
    fn waveOutGetPitch(
        hwo: *mut core::ffi::c_void,  // HWAVEOUT
        pdwPitch: *mut u32  // DWORD* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINMM.dll")]
public static extern uint waveOutGetPitch(IntPtr hwo, out uint pdwPitch);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINMM_waveOutGetPitch' -Namespace Win32 -PassThru
# $api::waveOutGetPitch(hwo, pdwPitch)

#uselib "WINMM.dll"
#func global waveOutGetPitch "waveOutGetPitch" sptr, sptr
; waveOutGetPitch hwo, varptr(pdwPitch)   ; 戻り値は stat
; hwo : HWAVEOUT -> "sptr"
; pdwPitch : DWORD* out -> "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 waveOutGetPitch "waveOutGetPitch" sptr, var
; res = waveOutGetPitch(hwo, pdwPitch)
; hwo : HWAVEOUT -> "sptr"
; pdwPitch : DWORD* out -> "var"
; ※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 waveOutGetPitch(HWAVEOUT hwo, DWORD* pdwPitch)
#uselib "WINMM.dll"
#cfunc global waveOutGetPitch "waveOutGetPitch" intptr, var
; res = waveOutGetPitch(hwo, pdwPitch)
; hwo : HWAVEOUT -> "intptr"
; pdwPitch : DWORD* out -> "var"
; ※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")
	procwaveOutGetPitch = winmm.NewProc("waveOutGetPitch")
)

// hwo (HWAVEOUT), pdwPitch (DWORD* out)
r1, _, err := procwaveOutGetPitch.Call(
	uintptr(hwo),
	uintptr(pdwPitch),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function waveOutGetPitch(
  hwo: THandle;   // HWAVEOUT
  pdwPitch: Pointer   // DWORD* out
): DWORD; stdcall;
  external 'WINMM.dll' name 'waveOutGetPitch';

result := DllCall("WINMM\waveOutGetPitch"
    , "Ptr", hwo   ; HWAVEOUT
    , "Ptr", pdwPitch   ; DWORD* out
    , "UInt")   ; return: DWORD

●waveOutGetPitch(hwo, pdwPitch) = DLL("WINMM.dll", "dword waveOutGetPitch(void*, void*)")
# 呼び出し: waveOutGetPitch(hwo, pdwPitch)
# hwo : HWAVEOUT -> "void*"
# pdwPitch : DWORD* out -> "void*"
# 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)。