using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
namespace ConsoleApplication3
{
class Program
{
[DllImport("user32.dll", EntryPoint = "FindWindow")]
extern static IntPtr FindWindow(string lpClassName, string lpWindowName);
[DllImport("user32.dll", EntryPoint = "GetSystemMenu")]
extern static IntPtr GetSystemMenu(IntPtr hWnd, IntPtr bRevert);
[DllImport("user32.dll", EntryPoint = "RemoveMenu")]
extern static IntPtr RemoveMenu(IntPtr hMenu, uint uPosition, uint uFlags);
static void closebtn()
{
IntPtr windowHandle = FindWindow(null, Process.GetCurrentProcess().MainModule.FileName);
IntPtr closeMenu = GetSystemMenu(windowHandle, IntPtr.Zero);
uint SC_CLOSE = 0xF060;
RemoveMenu(closeMenu, SC_CLOSE, 0x0);
}
static void Main(string[] args)
{
closebtn();
Console.WriteLine("Starting...");
Console.Read();
}
}
}