# Monitor Control Manager

A lightweight Windows utility for controlling monitor settings via DDC/CI. Adjust brightness, contrast, input source, and power settings directly from your system tray.

![.NET 9.0](https://img.shields.io/badge/.NET-9.0-blue)
![Platform](https://img.shields.io/badge/Platform-Windows-lightgrey)
![License](https://img.shields.io/badge/License-MIT-green)

## Features

- **System Tray Integration** - Clean popup interface accessible from taskbar
- **Multi-Monitor Support** - Control all DDC/CI compatible displays
- **Brightness & Contrast** - Slider controls with real-time feedback
- **Input Source Switching** - Auto-detects available inputs (HDMI, DisplayPort, DVI, VGA)
- **Power Management** - On, Sleep, and Off controls
- **Multi-Language** - Auto-detects system language (English, Spanish, French, German, Chinese, Japanese, Portuguese, Italian, Hindi)

## Requirements

- Windows 10/11
- .NET 9.0 Runtime
- DDC/CI compatible monitor(s)

> **Note:** Most external monitors support DDC/CI, but some laptop internal displays and certain monitors may not support this protocol.

## Installation

### From Release
Download the latest release and run the executable. The app will appear in your system tray.

### Build from Source
```powershell
git clone https://git.marketally.com/misc/ControlMyMonitorManagement.git
cd ControlMyMonitorManagement
dotnet build
dotnet run --project DellMonitorControl
```

## Usage

1. Launch the application - it minimizes to system tray
2. Click the tray icon to open the control panel
3. Adjust brightness/contrast with sliders
4. Select input source from dropdown (if multiple available)
5. Toggle power state with the power button
6. Click outside the popup to close

## Project Structure

| Project | Description |
|---------|-------------|
| `DellMonitorControl` | System tray application with popup UI |
| `ControlMyMonitorManagement` | Full WPF application (alternative) |
| `Library` | Core DDC/CI operations via ControlMyMonitor.exe |
| `Language` | Localization resources (9 languages) |
| `CMMModel` | Data models |
| `Tester` | Unit tests |

## Technical Details

### DDC/CI Protocol
The application uses DDC/CI (Display Data Channel/Command Interface) to communicate with monitors through the display cable. This allows software control of settings normally accessed via physical monitor buttons.

### VCP Codes Used
| Code | Function | Values |
|------|----------|--------|
| `10` | Brightness | 0-100 |
| `12` | Contrast | 0-100 |
| `60` | Input Source | 1=VGA, 15=DP, 17=HDMI |
| `D6` | Power Mode | 1=On, 4=Sleep, 5=Off |

## Credits

- **Original Project**: [rictirse](https://github.com/rictirse) - ControlMyMonitorManagement base
- **DDC/CI Engine**: [Nir Sofer](https://www.nirsoft.net/utils/control_my_monitor.html) - ControlMyMonitor (freeware)
- **Enhancements**: David H Friedel Jr - UI improvements, input switching, localization

## License

MIT License - See [LICENSE](LICENSE) for details.

Note: ControlMyMonitor.exe is freeware by Nir Sofer (free distribution, no modification).