HeartIt

A Windows desktop application that enables quick reactions in Microsoft Teams using global keyboard shortcuts.

• Global Hotkeys: Send Teams reactions from anywhere on your system without switching windows
• Multiple Reactions: Support for Like, Love, Applause, Laugh, and Surprised reactions
• System Tray Integration: Runs quietly in the background with easy access from the system tray
• Automatic Teams Detection: Automatically finds and interacts with your Microsoft Teams window
• Light & Dark Theme: Automatically follows your Windows theme with a colorful, fun look in both modes — and updates live when you change the system theme

• Windows OS
• .NET 10.0
• Microsoft Teams (classic or new Teams app)

winget install AlvinAshcraft.HeartIt

1. Download the latest .msixbundle from Releases
2. Double-click to install

git clone https://github.com/alvinashcraft/heart-it.git
cd heart-it
dotnet build
dotnet run --project HeartIt/HeartIt.csproj

The packaging project uses the Windows Application Packaging Project format. To build the MSIX locally:

msbuild HeartIt.Package/HeartIt.Package.wapproj /p:Configuration=Release /p:Platform=x64 /restore

To create a release, push a version tag:

git tag v1.0.0
git push origin v1.0.0

This triggers the GitHub Actions workflow that builds MSIX packages for x64 and ARM64 and creates an .msixbundle.

Once the application is running, use the following keyboard shortcuts while in a Teams meeting:

• Ctrl+Alt+1: Like 👍
• Ctrl+Alt+2: Love ❤️
• Ctrl+Alt+3: Applause 👏
• Ctrl+Alt+4: Laugh 😂
• Ctrl+Alt+5: Surprised 😮

The application runs in the system tray. Right-click the tray icon to exit.

HeartIt automatically detects your Windows light/dark mode setting and applies a matching theme to the toolbar. Each reaction button has its own colored badge so the emoji glyphs stay readable on either background. If you switch your Windows theme while the app is running, the toolbar updates immediately — no restart required.

Theming is built on:

• The WPF Fluent theme (ThemeMode="System") introduced in .NET 9, which styles built-in chrome and controls.
• A pair of custom resource dictionaries (HeartIt/Themes/Light.xaml and HeartIt/Themes/Dark.xaml) that supply the panel gradient, border, text, and per-emoji badge colors. App.xaml.cs listens for SystemEvents.UserPreferenceChanged and swaps the active dictionary when the OS theme changes.

HeartIt uses Windows UI Automation to interact with the Microsoft Teams application. When you press a hotkey, the app:

1. Locates the active Teams meeting window
2. Activates the Teams window
3. Triggers the reaction flyout
4. Selects the appropriate reaction
5. Returns focus to your previous window

• .NET 10.0
• WPF (Windows Presentation Foundation)
• Windows UI Automation
• Win32 API for global hotkeys

This project is licensed under the MIT License.

Contributions are welcome! Please feel free to submit a Pull Request.