DD_NTCALLBACKS

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct DD_NTCALLBACKS
{
    public uint dwSize;
    public uint dwFlags;
    public IntPtr FreeDriverMemory;
    public IntPtr SetExclusiveMode;
    public IntPtr FlipToGDISurface;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure DD_NTCALLBACKS
    Public dwSize As UInteger
    Public dwFlags As UInteger
    Public FreeDriverMemory As IntPtr
    Public SetExclusiveMode As IntPtr
    Public FlipToGDISurface As IntPtr
End Structure

import ctypes
from ctypes import wintypes

class DD_NTCALLBACKS(ctypes.Structure):
    _fields_ = [
        ("dwSize", wintypes.DWORD),
        ("dwFlags", wintypes.DWORD),
        ("FreeDriverMemory", ctypes.c_void_p),
        ("SetExclusiveMode", ctypes.c_void_p),
        ("FlipToGDISurface", ctypes.c_void_p),
    ]

#[repr(C)]
pub struct DD_NTCALLBACKS {
    pub dwSize: u32,
    pub dwFlags: u32,
    pub FreeDriverMemory: *mut core::ffi::c_void,
    pub SetExclusiveMode: *mut core::ffi::c_void,
    pub FlipToGDISurface: *mut core::ffi::c_void,
}

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

type DD_NTCALLBACKS struct {
	dwSize uint32
	dwFlags uint32
	FreeDriverMemory uintptr
	SetExclusiveMode uintptr
	FlipToGDISurface uintptr
}

type
  DD_NTCALLBACKS = record
    dwSize: DWORD;
    dwFlags: DWORD;
    FreeDriverMemory: Pointer;
    SetExclusiveMode: Pointer;
    FlipToGDISurface: Pointer;
  end;

const DD_NTCALLBACKS = extern struct {
    dwSize: u32,
    dwFlags: u32,
    FreeDriverMemory: ?*anyopaque,
    SetExclusiveMode: ?*anyopaque,
    FlipToGDISurface: ?*anyopaque,
};

type
  DD_NTCALLBACKS {.bycopy.} = object
    dwSize: uint32
    dwFlags: uint32
    FreeDriverMemory: pointer
    SetExclusiveMode: pointer
    FlipToGDISurface: pointer

struct DD_NTCALLBACKS
{
    uint dwSize;
    uint dwFlags;
    void* FreeDriverMemory;
    void* SetExclusiveMode;
    void* FlipToGDISurface;
}