Dave Friedel
77e9b0505a
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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.
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
git clone https://git.marketally.com/misc/ControlMyMonitorManagement.git
cd ControlMyMonitorManagement
dotnet build
dotnet run --project DellMonitorControl
Usage
- Launch the application - it minimizes to system tray
- Click the tray icon to open the control panel
- Adjust brightness/contrast with sliders
- Select input source from dropdown (if multiple available)
- Toggle power state with the power button
- 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 - ControlMyMonitorManagement base
- DDC/CI Engine: Nir Sofer - ControlMyMonitor (freeware)
- Enhancements: David H Friedel Jr - UI improvements, input switching, localization
License
MIT License - See LICENSE for details.
Note: ControlMyMonitor.exe is freeware by Nir Sofer (free distribution, no modification).