Dave Friedel
0352c6b755
- Add VCP commands for brightness (10), contrast (12), input source (60) - Fix UTF-16 encoding for monitor data parsing - Add system tray app with monitor controls - Add localization for en, es, fr, de, zh, ja, pt, it, hi - Update to .NET 9.0 - Add LICENSE and README 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
ControlMyMonitorManagement
A Windows desktop application for controlling monitor settings via DDC/CI (Display Data Channel/Command Interface). Adjust brightness, contrast, power state, and other display parameters across multiple monitors.
Features
- Multi-Monitor Support - Detect and control multiple connected displays
- Brightness & Contrast Sliders - Easy adjustment with real-time feedback
- Input Source Switching - Switch between VGA, DVI, HDMI, DisplayPort (auto-detected from monitor)
- Power Management - Turn monitors on, off, or into sleep mode
- System Tray Integration - DellMonitorControl app with taskbar tray popup
- 9 Languages - Auto-detects system language (en, es, fr, de, zh, ja, pt, it, hi)
Requirements
- Windows OS
- .NET 7.0 SDK
- DDC/CI compatible monitor(s)
Build
# Clone the repository
git clone https://github.com/yourusername/ControlMyMonitorManagement.git
cd ControlMyMonitorManagement
# Build the solution
dotnet build ControlMyMonitorManagement.sln
# Run the main application
dotnet run --project ControlMyMonitorManagement/ControlMyMonitorManagement.csproj
# Run the Dell-specific application (with system tray)
dotnet run --project DellMonitorControl/DellMonitorControl.csproj
Project Structure
| Project | Description |
|---|---|
| ControlMyMonitorManagement | Main WPF application with full UI |
| DellMonitorControl | Lightweight app with system tray integration |
| Library | Core business logic and DDC/CI operations |
| CMMModel | Data models for monitor status |
| CMMService | Service layer interfaces |
| Language | Localization support |
| Tester | NUnit test project |
Common VCP Codes
| Code | Name | Values |
|---|---|---|
| D6 | Power Mode | 1=On, 4=Sleep, 5=Off |
| 10 | Brightness | 0-100 |
| 12 | Contrast | 0-100 |
| 60 | Input Source | 1=VGA, 3=DVI, 15=DisplayPort, 17=HDMI |
How It Works
This application uses DDC/CI protocol to communicate with monitors through the display cable (HDMI, DisplayPort, DVI, VGA). DDC/CI allows software to send commands directly to the monitor's firmware to adjust settings that would normally require using the monitor's physical buttons.
Credits
- Original Project: DangWang - ControlMyMonitorManagement
- DDC/CI Tool: Nir Sofer - ControlMyMonitor.exe (freeware)
- Enhancements by David H Friedel Jr: Brightness/contrast sliders, input source switching, 9-language localization
License
This project contains multiple components with different terms:
- Original code by DangWang: No explicit license provided
- ControlMyMonitor.exe: Freeware by Nir Sofer - free distribution allowed, no commercial use, no modification
- New contributions (sliders, localization, etc.): MIT License
MIT License (for new contributions only) Copyright (c) 2026 David H Friedel Jr Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. --- NOTICE: This project contains components with different licensing terms: 1. Original code by DangWang - No explicit license was provided with the original repository. Use at your own discretion. 2. ControlMyMonitor.exe by Nir Sofer (NirSoft) - Freeware license: - Free distribution allowed - No commercial use or sale - No modification - See: https://www.nirsoft.net 3. New contributions (brightness/contrast controls, input source switching, 9-language localization) - MIT License as above.