DefDriverProc

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

LRESULT DefDriverProc(
    UINT_PTR dwDriverIdentifier,
    HDRVR hdrvr,
    DWORD uMsg,
    LPARAM lParam1,
    LPARAM lParam2
);

<DllImport("WINMM.dll", ExactSpelling:=True)>
Public Shared Function DefDriverProc(
    dwDriverIdentifier As UIntPtr,   ' UINT_PTR
    hdrvr As IntPtr,   ' HDRVR
    uMsg As UInteger,   ' DWORD
    lParam1 As IntPtr,   ' LPARAM
    lParam2 As IntPtr   ' LPARAM
) As IntPtr
End Function

' dwDriverIdentifier : UINT_PTR
' hdrvr : HDRVR
' uMsg : DWORD
' lParam1 : LPARAM
' lParam2 : LPARAM
Declare PtrSafe Function DefDriverProc Lib "winmm" ( _
    ByVal dwDriverIdentifier As LongPtr, _
    ByVal hdrvr As LongPtr, _
    ByVal uMsg As Long, _
    ByVal lParam1 As LongPtr, _
    ByVal lParam2 As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

DefDriverProc = ctypes.windll.winmm.DefDriverProc
DefDriverProc.restype = ctypes.c_ssize_t
DefDriverProc.argtypes = [
    ctypes.c_size_t,  # dwDriverIdentifier : UINT_PTR
    wintypes.HANDLE,  # hdrvr : HDRVR
    wintypes.DWORD,  # uMsg : DWORD
    ctypes.c_ssize_t,  # lParam1 : LPARAM
    ctypes.c_ssize_t,  # lParam2 : LPARAM
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINMM.dll')
DefDriverProc = Fiddle::Function.new(
  lib['DefDriverProc'],
  [
    Fiddle::TYPE_UINTPTR_T,  # dwDriverIdentifier : UINT_PTR
    Fiddle::TYPE_VOIDP,  # hdrvr : HDRVR
    -Fiddle::TYPE_INT,  # uMsg : DWORD
    Fiddle::TYPE_INTPTR_T,  # lParam1 : LPARAM
    Fiddle::TYPE_INTPTR_T,  # lParam2 : LPARAM
  ],
  Fiddle::TYPE_INTPTR_T)

#[link(name = "winmm")]
extern "system" {
    fn DefDriverProc(
        dwDriverIdentifier: usize,  // UINT_PTR
        hdrvr: *mut core::ffi::c_void,  // HDRVR
        uMsg: u32,  // DWORD
        lParam1: isize,  // LPARAM
        lParam2: isize  // LPARAM
    ) -> isize;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINMM.dll")]
public static extern IntPtr DefDriverProc(UIntPtr dwDriverIdentifier, IntPtr hdrvr, uint uMsg, IntPtr lParam1, IntPtr lParam2);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINMM_DefDriverProc' -Namespace Win32 -PassThru
# $api::DefDriverProc(dwDriverIdentifier, hdrvr, uMsg, lParam1, lParam2)

#uselib "WINMM.dll"
#func global DefDriverProc "DefDriverProc" sptr, sptr, sptr, sptr, sptr
; DefDriverProc dwDriverIdentifier, hdrvr, uMsg, lParam1, lParam2   ; 戻り値は stat
; dwDriverIdentifier : UINT_PTR -> "sptr"
; hdrvr : HDRVR -> "sptr"
; uMsg : DWORD -> "sptr"
; lParam1 : LPARAM -> "sptr"
; lParam2 : LPARAM -> "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 DefDriverProc "DefDriverProc" sptr, sptr, int, sptr, sptr
; res = DefDriverProc(dwDriverIdentifier, hdrvr, uMsg, lParam1, lParam2)
; dwDriverIdentifier : UINT_PTR -> "sptr"
; hdrvr : HDRVR -> "sptr"
; uMsg : DWORD -> "int"
; lParam1 : LPARAM -> "sptr"
; lParam2 : LPARAM -> "sptr"

; LRESULT DefDriverProc(UINT_PTR dwDriverIdentifier, HDRVR hdrvr, DWORD uMsg, LPARAM lParam1, LPARAM lParam2)
#uselib "WINMM.dll"
#cfunc global DefDriverProc "DefDriverProc" intptr, intptr, int, intptr, intptr
; res = DefDriverProc(dwDriverIdentifier, hdrvr, uMsg, lParam1, lParam2)
; dwDriverIdentifier : UINT_PTR -> "intptr"
; hdrvr : HDRVR -> "intptr"
; uMsg : DWORD -> "int"
; lParam1 : LPARAM -> "intptr"
; lParam2 : LPARAM -> "intptr"

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

var (
	winmm = windows.NewLazySystemDLL("WINMM.dll")
	procDefDriverProc = winmm.NewProc("DefDriverProc")
)

// dwDriverIdentifier (UINT_PTR), hdrvr (HDRVR), uMsg (DWORD), lParam1 (LPARAM), lParam2 (LPARAM)
r1, _, err := procDefDriverProc.Call(
	uintptr(dwDriverIdentifier),
	uintptr(hdrvr),
	uintptr(uMsg),
	uintptr(lParam1),
	uintptr(lParam2),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LRESULT

function DefDriverProc(
  dwDriverIdentifier: NativeUInt;   // UINT_PTR
  hdrvr: THandle;   // HDRVR
  uMsg: DWORD;   // DWORD
  lParam1: NativeInt;   // LPARAM
  lParam2: NativeInt   // LPARAM
): NativeInt; stdcall;
  external 'WINMM.dll' name 'DefDriverProc';

result := DllCall("WINMM\DefDriverProc"
    , "UPtr", dwDriverIdentifier   ; UINT_PTR
    , "Ptr", hdrvr   ; HDRVR
    , "UInt", uMsg   ; DWORD
    , "Ptr", lParam1   ; LPARAM
    , "Ptr", lParam2   ; LPARAM
    , "Ptr")   ; return: LRESULT

●DefDriverProc(dwDriverIdentifier, hdrvr, uMsg, lParam1, lParam2) = DLL("WINMM.dll", "int DefDriverProc(int, void*, dword, int, int)")
# 呼び出し: DefDriverProc(dwDriverIdentifier, hdrvr, uMsg, lParam1, lParam2)
# dwDriverIdentifier : UINT_PTR -> "int"
# hdrvr : HDRVR -> "void*"
# uMsg : DWORD -> "dword"
# lParam1 : LPARAM -> "int"
# lParam2 : LPARAM -> "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)。