GetVpCount

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

HRESULT GetVpCount(
    void* vmSavedStateDumpHandle,
    DWORD* vpCount
);

<DllImport("VmSavedStateDumpProvider.dll", ExactSpelling:=True)>
Public Shared Function GetVpCount(
    vmSavedStateDumpHandle As IntPtr,   ' void* in/out
    <Out> ByRef vpCount As UInteger   ' DWORD* out
) As Integer
End Function

' vmSavedStateDumpHandle : void* in/out
' vpCount : DWORD* out
Declare PtrSafe Function GetVpCount Lib "vmsavedstatedumpprovider" ( _
    ByVal vmSavedStateDumpHandle As LongPtr, _
    ByRef vpCount 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

GetVpCount = ctypes.windll.vmsavedstatedumpprovider.GetVpCount
GetVpCount.restype = ctypes.c_int
GetVpCount.argtypes = [
    ctypes.POINTER(None),  # vmSavedStateDumpHandle : void* in/out
    ctypes.POINTER(wintypes.DWORD),  # vpCount : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('VmSavedStateDumpProvider.dll')
GetVpCount = Fiddle::Function.new(
  lib['GetVpCount'],
  [
    Fiddle::TYPE_VOIDP,  # vmSavedStateDumpHandle : void* in/out
    Fiddle::TYPE_VOIDP,  # vpCount : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "vmsavedstatedumpprovider")]
extern "system" {
    fn GetVpCount(
        vmSavedStateDumpHandle: *mut (),  // void* in/out
        vpCount: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("VmSavedStateDumpProvider.dll")]
public static extern int GetVpCount(IntPtr vmSavedStateDumpHandle, out uint vpCount);
"@
$api = Add-Type -MemberDefinition $sig -Name 'VmSavedStateDumpProvider_GetVpCount' -Namespace Win32 -PassThru
# $api::GetVpCount(vmSavedStateDumpHandle, vpCount)

#uselib "VmSavedStateDumpProvider.dll"
#func global GetVpCount "GetVpCount" sptr, sptr
; GetVpCount vmSavedStateDumpHandle, varptr(vpCount)   ; 戻り値は stat
; vmSavedStateDumpHandle : void* in/out -> "sptr"
; vpCount : 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 "VmSavedStateDumpProvider.dll"
#cfunc global GetVpCount "GetVpCount" sptr, var
; res = GetVpCount(vmSavedStateDumpHandle, vpCount)
; vmSavedStateDumpHandle : void* in/out -> "sptr"
; vpCount : 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。

; HRESULT GetVpCount(void* vmSavedStateDumpHandle, DWORD* vpCount)
#uselib "VmSavedStateDumpProvider.dll"
#cfunc global GetVpCount "GetVpCount" intptr, var
; res = GetVpCount(vmSavedStateDumpHandle, vpCount)
; vmSavedStateDumpHandle : void* in/out -> "intptr"
; vpCount : 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 (
	vmsavedstatedumpprovider = windows.NewLazySystemDLL("VmSavedStateDumpProvider.dll")
	procGetVpCount = vmsavedstatedumpprovider.NewProc("GetVpCount")
)

// vmSavedStateDumpHandle (void* in/out), vpCount (DWORD* out)
r1, _, err := procGetVpCount.Call(
	uintptr(vmSavedStateDumpHandle),
	uintptr(vpCount),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function GetVpCount(
  vmSavedStateDumpHandle: Pointer;   // void* in/out
  vpCount: Pointer   // DWORD* out
): Integer; stdcall;
  external 'VmSavedStateDumpProvider.dll' name 'GetVpCount';

result := DllCall("VmSavedStateDumpProvider\GetVpCount"
    , "Ptr", vmSavedStateDumpHandle   ; void* in/out
    , "Ptr", vpCount   ; DWORD* out
    , "Int")   ; return: HRESULT

●GetVpCount(vmSavedStateDumpHandle, vpCount) = DLL("VmSavedStateDumpProvider.dll", "int GetVpCount(void*, void*)")
# 呼び出し: GetVpCount(vmSavedStateDumpHandle, vpCount)
# vmSavedStateDumpHandle : void* in/out -> "void*"
# vpCount : 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)。