Check this source code out. All commented code – used to create a console in a Windows app. Uncommented – to hide the console in a console app. From here. (Previously here.) Project reg2run
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// Copyright (C) 2005-2015 Alexander Batishchev (abatishchev at gmail.com)
using System;
using System.ComponentModel;
using System.Runtime.InteropServices;
namespace Reg2Run
{
static class ManualConsole
{
#region DllImport
/*
[DllImport("kernel32.dll", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.StdCall, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool AllocConsole();
*/
[DllImport("kernel32.dll", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.StdCall, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool CloseHandle(IntPtr handle);
/*
[DllImport("kernel32.dll", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.StdCall, SetLastError = true)]
private static extern IntPtr CreateFile([MarshalAs(UnmanagedType.LPStr)]string fileName, [MarshalAs(UnmanagedType.I4)]int desiredAccess, [MarshalAs(UnmanagedType.I4)]int shareMode, IntPtr securityAttributes, [MarshalAs(UnmanagedType.I4)]int creationDisposition, [MarshalAs(UnmanagedType.I4)]int flagsAndAttributes, IntPtr templateFile);
*/
[DllImport("kernel32.dll", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.StdCall, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool FreeConsole();
[DllImport("kernel32.dll", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.StdCall, SetLastError = true)]
private static extern IntPtr GetStdHandle([MarshalAs(UnmanagedType.I4)]int nStdHandle);
/*
[DllImport("kernel32.dll", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.StdCall, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool SetStdHandle(int nStdHandle, IntPtr handle);
*/
#endregion
#region Methods
/*
public static void Create()
{
var ptr = GetStdHandle(-11);
if (!AllocConsole())
{
throw new Win32Exception("AllocConsole");
}
ptr = CreateFile("CONOUT$", 0x40000000, 2, IntPtr.Zero, 3, 0, IntPtr.Zero);
if (!SetStdHandle(-11, ptr))
{
throw new Win32Exception("SetStdHandle");
}
var newOut = new StreamWriter(Console.OpenStandardOutput());
newOut.AutoFlush = true;
Console.SetOut(newOut);
Console.SetError(newOut);
}
*/
public static void Hide()
{
var ptr = GetStdHandle(-11);
if (!CloseHandle(ptr))
{
throw new Win32Exception();
}
ptr = IntPtr.Zero;
if (!FreeConsole())
{
throw new Win32Exception();
}
}
#endregion
}
}