Truelock

A simple & User friendly Screenlocker

Author: Copy05

Truelock is a user-friendly screenlock application for kiosk windows devices and for users who want to lock their screen. (probably double locking.)

Why did i made this project

I wanted to create my own lock screen, which has more feature than the windows login screen. I wanted that the login screen should not be boring or annoying that's why i implemented the Texteditor feature but for safety features i didnt implement the save button.

The Design of this application is inspired by Windows XP & Windows 95.

Features

Splash Screen
User-friendly UI
Ability to double lock (Lock and then Win + L)
Customizeable Login Deails
CLI

./truelock username password -browser url

WebBrowser Lock
Disabling Keyboard Shortcuts (Alt + f4, Alt + Tab, etc...)
Can be used in a multiple monitor workspace.

Optional Options

Shutdown Button on Login Form
TrueLock TextEditor Option. (content cannot be saved.)
Taskkill most of the applications

Knowen Problems

If you're not carefully you can lose your unsaved work.
If TrueLock Crashes and you dont have Task Manager then you have to restart
WebBrowser can crash.

Some Code Snippits

Which Process gets killed when "Kill Mostly of apps" is enabled:

// Task names are stored in a array. these processes are getting killed if it's enabled
string[] procName = { "chrome.exe", "teams.exe", "edge.exe", "firefox.exe", "word.exe", "excel.exe", "code.exe", 
                    "powerpoint.exe", "outlook.exe", "notepad.exe", "mspaint.exe", "powershell.exe", "minecraft.exe", "access.exe" };

Which Keys are disabled:

// Variables for Keycodes and C# Keys
int vkCode = Marshal.ReadInt32(lParam);
Keys key = (Keys)vkCode;

// Disable Most of the Keys. but ctrl + alt + del, win + l & fn + f1 still works and cannot be suppressed!
if (key == Keys.LWin || key == Keys.RWin || key == Keys.Alt || key == Keys.Tab || key == Keys.LControlKey || key == Keys.RControlKey || key == Keys.Delete || key == Keys.Escape || key == Keys.Control && key == Keys.Alt && key == Keys.Delete || key == Keys.Alt && key == Keys.Escape || key == Keys.LControlKey && key == Keys.Alt && key == Keys.Delete || key == Keys.RControlKey && key == Keys.Alt && key == Keys.Delete || key == Keys.VolumeUp || key == Keys.VolumeDown || key == Keys.VolumeDown || key == Keys.F4 || key == Keys.LWin && key == Keys.L || key == Keys.Print || key == Keys.Sleep || key == Keys.F11 || key == Keys.F1)
    return (IntPtr)1; // Key disabled.

Copy05 / TrueLock