ReadSavedStateGlobalVariable

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

HRESULT ReadSavedStateGlobalVariable(
    void* vmSavedStateDumpHandle,
    DWORD vpId,
    LPCSTR globalName,
    void* buffer,
    DWORD bufferSize
);

<DllImport("VmSavedStateDumpProvider.dll", ExactSpelling:=True)>
Public Shared Function ReadSavedStateGlobalVariable(
    vmSavedStateDumpHandle As IntPtr,   ' void* in/out
    vpId As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPStr)> globalName As String,   ' LPCSTR
    buffer As IntPtr,   ' void* out
    bufferSize As UInteger   ' DWORD
) As Integer
End Function

' vmSavedStateDumpHandle : void* in/out
' vpId : DWORD
' globalName : LPCSTR
' buffer : void* out
' bufferSize : DWORD
Declare PtrSafe Function ReadSavedStateGlobalVariable Lib "vmsavedstatedumpprovider" ( _
    ByVal vmSavedStateDumpHandle As LongPtr, _
    ByVal vpId As Long, _
    ByVal globalName As String, _
    ByVal buffer As LongPtr, _
    ByVal bufferSize 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

ReadSavedStateGlobalVariable = ctypes.windll.vmsavedstatedumpprovider.ReadSavedStateGlobalVariable
ReadSavedStateGlobalVariable.restype = ctypes.c_int
ReadSavedStateGlobalVariable.argtypes = [
    ctypes.POINTER(None),  # vmSavedStateDumpHandle : void* in/out
    wintypes.DWORD,  # vpId : DWORD
    wintypes.LPCSTR,  # globalName : LPCSTR
    ctypes.POINTER(None),  # buffer : void* out
    wintypes.DWORD,  # bufferSize : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('VmSavedStateDumpProvider.dll')
ReadSavedStateGlobalVariable = Fiddle::Function.new(
  lib['ReadSavedStateGlobalVariable'],
  [
    Fiddle::TYPE_VOIDP,  # vmSavedStateDumpHandle : void* in/out
    -Fiddle::TYPE_INT,  # vpId : DWORD
    Fiddle::TYPE_VOIDP,  # globalName : LPCSTR
    Fiddle::TYPE_VOIDP,  # buffer : void* out
    -Fiddle::TYPE_INT,  # bufferSize : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "vmsavedstatedumpprovider")]
extern "system" {
    fn ReadSavedStateGlobalVariable(
        vmSavedStateDumpHandle: *mut (),  // void* in/out
        vpId: u32,  // DWORD
        globalName: *const u8,  // LPCSTR
        buffer: *mut (),  // void* out
        bufferSize: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("VmSavedStateDumpProvider.dll")]
public static extern int ReadSavedStateGlobalVariable(IntPtr vmSavedStateDumpHandle, uint vpId, [MarshalAs(UnmanagedType.LPStr)] string globalName, IntPtr buffer, uint bufferSize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'VmSavedStateDumpProvider_ReadSavedStateGlobalVariable' -Namespace Win32 -PassThru
# $api::ReadSavedStateGlobalVariable(vmSavedStateDumpHandle, vpId, globalName, buffer, bufferSize)

#uselib "VmSavedStateDumpProvider.dll"
#func global ReadSavedStateGlobalVariable "ReadSavedStateGlobalVariable" sptr, sptr, sptr, sptr, sptr
; ReadSavedStateGlobalVariable vmSavedStateDumpHandle, vpId, globalName, buffer, bufferSize   ; 戻り値は stat
; vmSavedStateDumpHandle : void* in/out -> "sptr"
; vpId : DWORD -> "sptr"
; globalName : LPCSTR -> "sptr"
; buffer : void* out -> "sptr"
; bufferSize : 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 "VmSavedStateDumpProvider.dll"
#cfunc global ReadSavedStateGlobalVariable "ReadSavedStateGlobalVariable" sptr, int, str, sptr, int
; res = ReadSavedStateGlobalVariable(vmSavedStateDumpHandle, vpId, globalName, buffer, bufferSize)
; vmSavedStateDumpHandle : void* in/out -> "sptr"
; vpId : DWORD -> "int"
; globalName : LPCSTR -> "str"
; buffer : void* out -> "sptr"
; bufferSize : DWORD -> "int"

; HRESULT ReadSavedStateGlobalVariable(void* vmSavedStateDumpHandle, DWORD vpId, LPCSTR globalName, void* buffer, DWORD bufferSize)
#uselib "VmSavedStateDumpProvider.dll"
#cfunc global ReadSavedStateGlobalVariable "ReadSavedStateGlobalVariable" intptr, int, str, intptr, int
; res = ReadSavedStateGlobalVariable(vmSavedStateDumpHandle, vpId, globalName, buffer, bufferSize)
; vmSavedStateDumpHandle : void* in/out -> "intptr"
; vpId : DWORD -> "int"
; globalName : LPCSTR -> "str"
; buffer : void* out -> "intptr"
; bufferSize : DWORD -> "int"

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

var (
	vmsavedstatedumpprovider = windows.NewLazySystemDLL("VmSavedStateDumpProvider.dll")
	procReadSavedStateGlobalVariable = vmsavedstatedumpprovider.NewProc("ReadSavedStateGlobalVariable")
)

// vmSavedStateDumpHandle (void* in/out), vpId (DWORD), globalName (LPCSTR), buffer (void* out), bufferSize (DWORD)
r1, _, err := procReadSavedStateGlobalVariable.Call(
	uintptr(vmSavedStateDumpHandle),
	uintptr(vpId),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(globalName))),
	uintptr(buffer),
	uintptr(bufferSize),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function ReadSavedStateGlobalVariable(
  vmSavedStateDumpHandle: Pointer;   // void* in/out
  vpId: DWORD;   // DWORD
  globalName: PAnsiChar;   // LPCSTR
  buffer: Pointer;   // void* out
  bufferSize: DWORD   // DWORD
): Integer; stdcall;
  external 'VmSavedStateDumpProvider.dll' name 'ReadSavedStateGlobalVariable';

result := DllCall("VmSavedStateDumpProvider\ReadSavedStateGlobalVariable"
    , "Ptr", vmSavedStateDumpHandle   ; void* in/out
    , "UInt", vpId   ; DWORD
    , "AStr", globalName   ; LPCSTR
    , "Ptr", buffer   ; void* out
    , "UInt", bufferSize   ; DWORD
    , "Int")   ; return: HRESULT

●ReadSavedStateGlobalVariable(vmSavedStateDumpHandle, vpId, globalName, buffer, bufferSize) = DLL("VmSavedStateDumpProvider.dll", "int ReadSavedStateGlobalVariable(void*, dword, char*, void*, dword)")
# 呼び出し: ReadSavedStateGlobalVariable(vmSavedStateDumpHandle, vpId, globalName, buffer, bufferSize)
# vmSavedStateDumpHandle : void* in/out -> "void*"
# vpId : DWORD -> "dword"
# globalName : LPCSTR -> "char*"
# buffer : void* out -> "void*"
# bufferSize : 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)。