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Install CapsNumTray using Winget - wingetCollections
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CapsNumTray itsnateai

capslock keyboard numlock scrolllock system-tray tray-indicator
Use this command to install CapsNumTray:
winget install --id=itsnateai.CapsNumTray -e

CapsNumTray is a system tray utility designed to display indicators for Caps Lock, Num Lock, and Scroll Lock on Windows. This tool provides clear visual cues for the current state of your keyboard's lock keys.

Key features include independent tray icons for each lock key, allowing users to easily monitor their status. Left-clicking any icon toggles its corresponding lock key, while right-clicking opens a menu for additional settings. The utility supports both light and dark themes, automatically adjusting icon brightness for better visibility on different taskbar backgrounds. DPI-aware icons ensure crisp display at various screen scalings.

CapsNumTray offers an on-screen display that shows the state after toggling, enhancing user experience with visual feedback. Optional beep sounds provide audible confirmation of lock key changes, further improving usability.

Ideal for Windows users seeking precise control and visibility over their keyboard's lock keys, CapsNumTray can be installed via winget, making it easy to integrate into your system setup.

README

CapsNumTray

GitHub Release License: MIT .NET 8 Windows GitHub Downloads

LTR — Long-Term Release · one-click self-update built in.

Caps Lock, Num Lock, and Scroll Lock tray indicators for Windows.

A lightweight system tray utility that shows the current state of your lock keys as independent tray icons. Left-click to toggle, right-click for options. Bright icon = ON, dim icon = OFF.

Features

  • Independent tray icons for Caps Lock, Num Lock, and Scroll Lock
  • Left-click to toggle any lock key from the tray
  • Light theme support: Automatic dim icon variants for light taskbar themes
  • DPI-aware icons: Crisp at any display scaling
  • Show/hide individual icons: Scroll Lock hidden by default (opt-in)
  • On-screen display: Floating tooltip shows state after toggle
  • Beep feedback: Optional audible tone (higher pitch = ON)
  • Run at startup: One-click toggle via Settings
  • Explorer restart recovery: Icons survive Explorer crashes
  • Settings dialog: GUI for all options with OK/Apply/Cancel

Screenshots

Tray IconsTray MenuSettings
Tray IconsMenuSettings
Versions
2.4.13
2.4.12
2.4.11
2.4.10
2.4.9
2.4.8
2.4.7
2.3.2
2.3.1
2.2.8
show 4 more
Website
github.com
License
Last updated
6/6/2026
Download latest version

Requirements

  • Windows 10/11

Download

Grab CapsNumTray.exe from the latest release — single file, self-contained, no .NET runtime needed.

Code signing

CapsNumTray uses the SignPath Foundation for free code signing of open-source projects. Signed releases carry an Authenticode signature under the publisher name itsnateai and are verified by Windows before execution.

Installation

Option 1: Direct download

See Download above.

Option 2: WinGet (recommended)

winget install itsnateai.CapsNumTray
winget upgrade itsnateai.CapsNumTray   # later, to update

WinGet installs stay current automatically. The in-app Update button detects WinGet installs and points you back at winget upgrade instead of trying to overwrite the managed binary.

Option 3: Build from source

git clone https://github.com/itsnateai/CaplockNumlock.git
cd CaplockNumlock

# Framework-dependent (~155KB, requires .NET 8 runtime)
dotnet publish -c Release -r win-x64

# Self-contained single-file (~147MB, no runtime needed) — matches the release exe
dotnet publish -c Release --self-contained true -p:PublishSingleFile=true -r win-x64

Output: bin/Release/net8.0-windows/win-x64/publish/CapsNumTray.exe

Self-update integrity

Releases publish a SHA256SUMS file alongside the exe. The in-app Update button downloads it, verifies the hash, and fails closed if anything is missing or doesn't match.

Customization

Settings are stored in CapsNumTray.ini (auto-created next to the exe):

[Visibility]
ShowCaps=1
ShowNum=1
ShowScroll=0

[General]
ShowOSD=1
BeepOnToggle=0
KeyDefaultDescription
ShowCaps1Show Caps Lock tray icon
ShowNum1Show Num Lock tray icon
ShowScroll0Show Scroll Lock tray icon
ShowOSD1Floating tooltip on toggle
BeepOnToggle0Audible tone on toggle

How It Works

CapsNumTray uses the Win32 Shell_NotifyIconW API directly (not NotifyIcon) to support multiple independent tray icons. A 5-second polling timer via GetKeyState keeps icons in sync even when keys are toggled externally. Icons are DPI-aware via GetDpiForWindow and automatically re-added if Explorer restarts.

Project Structure

PathDescription
CapsNumTray.csproj.NET 8 project file
Program.csEntry point — single-instance enforcement
TrayApplication.csCore app — Shell_NotifyIconW, WndProc, key toggling, menus
IconManager.csDPI-aware icon loading with 3-stage fallback
ConfigManager.csINI file reader/writer
OsdForm.csAuto-hiding tooltip overlay
SettingsForm.csSettings GUI
HelpForm.csHelp text window
NativeMethods.csWin32 P/Invoke declarations
StartupManager.csStartup shortcut management
icons/*.ico9 icon files (ON/OFF/Light variants)

Supporting This Project

This app is free and open source. If it saves you time, consider supporting continued development:

  • Buy Me a Coffee — one-time support

You can also build from source for free — see the build instructions above.

License

MIT