Real-time keyboard and mouse input visualization overlay for Windows. Displays key presses, clicks, and CPS (clicks per second) on top of other applications. Built with WPF and .NET 7 using the MVVM pattern.

• Keyboard Overlay -- full 104-key layout with visual press feedback and CPS counter
• Mouse Overlay -- tracks left/right clicks, scroll wheel, with CPS and SPS counters
• Single Key Overlay -- customizable slot-based key tracking with CPS counter
• Always-on-top windows that stay visible over fullscreen applications
• Frameless transparent window with drag-to-move and minimize/close controls
• Settings panel for configuration

Keyboard Overlay	Mouse Overlay	Key Overlay

• Windows 10/11
• .NET 7 SDK

git clone https://github.com/Wolren/KeyOverlay.git
cd KeyOverlay
dotnet build
dotnet run --project KeyOverlay

• MVVM pattern with BaseViewModel implementing INotifyPropertyChanged
• Windows API low-level keyboard/mouse hooks (SetWindowsHookEx) for global input capture
• View-first navigation via UpdateViewCommand with DataTemplate bindings in App.xaml

KeyOverlay/
  Overlays/       -- Window overlays (Keyboard, Mouse, SingleKey)
  ViewModels/     -- MVVM view models (Main, Keyboard, Mouse, SingleKey, Settings)
  Views/          -- UserControl views for each view model
  Commands/       -- ICommand implementations
  Assets/         -- Application icon

Pre-built binaries are available on the Releases page.

• C# / WPF (.NET 7, Windows)
• Microsoft.Xaml.Behaviors.Wpf
• Windows API (low-level keyboard/mouse hooks)

• @Wolren

This project is licensed under the MIT License -- see the LICENSE file for details.