TRANSMSGLIST

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct TRANSMSG
{
    public uint message;
    public UIntPtr wParam;
    public IntPtr lParam;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct TRANSMSGLIST
{
    public uint uMsgCount;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 1)] public TRANSMSG[] TransMsg;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure TRANSMSG
    Public message As UInteger
    Public wParam As UIntPtr
    Public lParam As IntPtr
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure TRANSMSGLIST
    Public uMsgCount As UInteger
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=1)> Public TransMsg() As TRANSMSG
End Structure

import ctypes
from ctypes import wintypes

class TRANSMSG(ctypes.Structure):
    _fields_ = [
        ("message", wintypes.DWORD),
        ("wParam", ctypes.c_size_t),
        ("lParam", ctypes.c_ssize_t),
    ]

class TRANSMSGLIST(ctypes.Structure):
    _fields_ = [
        ("uMsgCount", wintypes.DWORD),
        ("TransMsg", TRANSMSG * 1),
    ]

#[repr(C)]
pub struct TRANSMSG {
    pub message: u32,
    pub wParam: usize,
    pub lParam: isize,
}

#[repr(C)]
pub struct TRANSMSGLIST {
    pub uMsgCount: u32,
    pub TransMsg: [TRANSMSG; 1],
}

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

type TRANSMSG struct {
	message uint32
	wParam uintptr
	lParam uintptr
}

type TRANSMSGLIST struct {
	uMsgCount uint32
	TransMsg [1]TRANSMSG
}

type
  TRANSMSG = record
    message: DWORD;
    wParam: NativeUInt;
    lParam: NativeInt;
  end;

  TRANSMSGLIST = record
    uMsgCount: DWORD;
    TransMsg: array[0..0] of TRANSMSG;
  end;

const TRANSMSG = extern struct {
    message: u32,
    wParam: usize,
    lParam: isize,
};

const TRANSMSGLIST = extern struct {
    uMsgCount: u32,
    TransMsg: [1]TRANSMSG,
};

type
  TRANSMSG {.bycopy.} = object
    message: uint32
    wParam: uint
    lParam: int

  TRANSMSGLIST {.bycopy.} = object
    uMsgCount: uint32
    TransMsg: array[1, TRANSMSG]

struct TRANSMSG
{
    uint message;
    size_t wParam;
    ptrdiff_t lParam;
}

struct TRANSMSGLIST
{
    uint uMsgCount;
    TRANSMSG[1] TransMsg;
}