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Dave Friedel 0352c6b755 Add brightness/contrast sliders, input source switching, and 9-language localization
- 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

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-03 22:11:35 -05:00
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README.md Add brightness/contrast sliders, input source switching, and 9-language localization 2026-01-03 22:11:35 -05:00

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