SECPKG_DLL_FUNCTIONS

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct SECPKG_DLL_FUNCTIONS
{
    public IntPtr AllocateHeap;
    public IntPtr FreeHeap;
    public IntPtr RegisterCallback;
    public IntPtr LocatePackageById;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure SECPKG_DLL_FUNCTIONS
    Public AllocateHeap As IntPtr
    Public FreeHeap As IntPtr
    Public RegisterCallback As IntPtr
    Public LocatePackageById As IntPtr
End Structure

import ctypes
from ctypes import wintypes

class SECPKG_DLL_FUNCTIONS(ctypes.Structure):
    _fields_ = [
        ("AllocateHeap", ctypes.c_void_p),
        ("FreeHeap", ctypes.c_void_p),
        ("RegisterCallback", ctypes.c_void_p),
        ("LocatePackageById", ctypes.c_void_p),
    ]

#[repr(C)]
pub struct SECPKG_DLL_FUNCTIONS {
    pub AllocateHeap: *mut core::ffi::c_void,
    pub FreeHeap: *mut core::ffi::c_void,
    pub RegisterCallback: *mut core::ffi::c_void,
    pub LocatePackageById: *mut core::ffi::c_void,
}

import "golang.org/x/sys/windows"

type SECPKG_DLL_FUNCTIONS struct {
	AllocateHeap uintptr
	FreeHeap uintptr
	RegisterCallback uintptr
	LocatePackageById uintptr
}

type
  SECPKG_DLL_FUNCTIONS = record
    AllocateHeap: Pointer;
    FreeHeap: Pointer;
    RegisterCallback: Pointer;
    LocatePackageById: Pointer;
  end;

const SECPKG_DLL_FUNCTIONS = extern struct {
    AllocateHeap: ?*anyopaque,
    FreeHeap: ?*anyopaque,
    RegisterCallback: ?*anyopaque,
    LocatePackageById: ?*anyopaque,
};

type
  SECPKG_DLL_FUNCTIONS {.bycopy.} = object
    AllocateHeap: pointer
    FreeHeap: pointer
    RegisterCallback: pointer
    LocatePackageById: pointer

struct SECPKG_DLL_FUNCTIONS
{
    void* AllocateHeap;
    void* FreeHeap;
    void* RegisterCallback;
    void* LocatePackageById;
}