* Add comprehensive unit tests for WindowsKeyConverter - Implement 118 parallelizable unit tests for WindowsKeyConverter - Cover ToKey and ToKeyInfo methods with full bidirectional testing - Test basic characters, modifiers, special keys, function keys - Test VK_PACKET Unicode/IME input - Test OEM keys, NumPad keys, and lock states - Include round-trip conversion tests - All tests passing successfully Fixes #4389 * Add test documenting VK_PACKET surrogate pair limitation VK_PACKET sends surrogate pairs (e.g., emoji) as two separate events. Current WindowsKeyConverter processes each independently without combining. Test documents this limitation for future fix at InputProcessor level. * Mark WindowsKeyConverterTests as Windows-only Tests now skip on non-Windows platforms using SkipException in constructor. This prevents CI failures on macOS and Linux where Windows Console API is not available. * Properly mark WindowsKeyConverter tests as Windows-only Created custom xUnit attributes SkipOnNonWindowsFact and SkipOnNonWindowsTheory that automatically skip tests on non-Windows platforms. This prevents CI failures on macOS and Linux. * Refactor and enhance test coverage for input processors Refactored `ApplicationImpl.cs` to simplify its structure by removing the `_stopAfterFirstIteration` field. Reintroduced and modernized test files with improved structure and coverage: - `NetInputProcessorTests.cs`: Added tests for `ConsoleKeyInfo` to `Rune`/`Key` conversion and queue processing. - `WindowSizeMonitorTests.cs`: Added tests for size change event handling. - `WindowsInputProcessorTests.cs`: Added tests for keyboard and mouse input processing, including mouse flag mapping. - `WindowsKeyConverterTests.cs`: Added comprehensive tests for `InputRecord` to `Key` conversion, covering OEM keys, modifiers, Unicode, and round-trip integrity. Improved test coverage for edge cases, introduced parameterized tests, and documented known limitations for future improvements. * Use Trait-based platform filtering for WindowsKeyConverter tests Added [Trait('Platform', 'Windows')] and [Collection('Global Test Setup')] attributes. Tests will run on Windows but can be filtered in CI on other platforms using --filter 'Platform!=Windows' if needed. This approach doesn't interfere with GlobalTestSetup and works correctly with xUnit. * Filter Windows-specific tests on non-Windows CI platforms Added --filter 'Platform!=Windows' for Linux and macOS runners to exclude WindowsKeyConverterTests which require Windows Console APIs. Windows runner runs all tests normally. * Fix log path typo and remove Codecov upload step Corrected a typo in the log directory path from `logs/UnitTestsParallelable/` to `logs/UnitTestsParallelizable/`. Removed the "Upload Parallelizable UnitTests Coverage to Codecov" step, which was conditional on `matrix.os == 'ubuntu-latest'` and used the `codecov/codecov-action@v4` action. This change improves log handling and removes the Codecov integration. * Refactor application reset logic Replaced `Application.ResetState(true)` with a more explicit reset mechanism. Introduced `ApplicationImpl.SetInstance(null)` to clear the application instance and added `CM.Disable(true)` to disable specific components. This change improves control over the reset process and ensures a more granular approach to application state management. * Improve null safety with ?. and ! operators Enhanced null safety across the codebase by introducing the null-conditional operator (`?.`) and null-forgiving operator (`!`) where appropriate. - Updated `app` and `driver` method calls to use `?.` to prevent potential `NullReferenceException` errors. - Added `!` to assert non-nullability in cases like `e.Value!.ToString()` and `app.Driver?.Contents!`. - Modified `lv.SelectedItemChanged` event handler to ensure safe handling of nullable values. - Updated `app.Shutdown()`, `app.LayoutAndDraw()`, and mouse event handling to use `?.`. - Ensured `driver.SetScreenSize` is invoked only when `driver` is not null. - Improved string concatenation logic with null-forgiving operator for `Contents`. - General improvements to null safety to make the code more robust and resilient to null references. * Improve Unicode tests and clarify surrogate pair handling Updated `WindowsKeyConverterTests` to enhance readability, improve test data, and clarify comments. Key changes include: - Reformatted `[Collection]` and `[Trait]` attributes for consistency. - Replaced placeholder Unicode characters with meaningful examples: - Chinese: `中`, Japanese: `日`, Korean: `한`, Accented: `é`, Euro: `€`, Greek: `Ω`. - Updated comments to replace placeholder emojis (`??`) with `😀` (U+1F600) for clarity. - Adjusted surrogate pair test data to accurately reflect `😀`. - Improved documentation of current limitations and future fixes for surrogate pair handling. These changes ensure more accurate and meaningful test cases while improving code clarity. * Ensure platform-specific test execution on Windows Added `System.Runtime.InteropServices` and `Xunit.Sdk` namespaces to `WindowsKeyConverterTests.cs` to support platform checks and test setup. Marked the test class with `[Collection("Global Test Setup")]` to enable shared test setup. Updated the `ToKey_NumPadKeys_ReturnsExpectedKeyCode` method to include a platform check, ensuring the test only runs on Windows platforms. * Integrate TrueColor support into ColorPicker Merged TrueColors functionality into ColorPicker, enhancing the scenario with TrueColor demonstration and gradient features. Updated `ColorPicker.cs` to include driver information, TrueColor support indicators, and a toggle for `Force16Colors`. Removed `TrueColors.cs` as its functionality is now consolidated. Refined `ColorBar` to use dynamic height with `Dim.Auto` for better flexibility. Added documentation to `HueBar` to clarify its role in representing the Hue component in HSL color space. * Revert workflow change. * Reverted attribute that didn't actualy work.
Terminal.Gui v2
The premier toolkit for building rich console apps for Windows, the Mac, and Linux/Unix.
⚠️ Note:
v1is in maintenance mode and we will only accept PRs for issues impacting existing functionality.
⚠️ Note:
Developers starting new TUI projects are encouraged to targetv2 Alpha. The API is significantly changed, and significantly improved. There will be breaking changes in the API before Beta, but the core API is stable.
Quick Start
Paste these commands into your favorite terminal on Windows, Mac, or Linux. This will install the Terminal.Gui.Templates, create a new "Hello World" TUI app, and run it.
(Press CTRL-Q to exit the app)
dotnet new --install Terminal.Gui.templates
dotnet new tui -n myproj
cd myproj
dotnet run
To run the UICatalog demo app that shows all the controls and features of the toolkit, use the following command:
dotnet run --project Examples/UICatalog/UICatalog.csproj
There is also a visual designer (uses Terminal.Gui itself).
Documentation
The full developer documentation for Terminal.Gui is available at gui-cs.github.io/Terminal.Gui.
Getting Started
- Getting Started - Quick start guide to create your first Terminal.Gui application
- Migrating from v1 to v2 - Complete guide for upgrading existing applications
- What's New in v2 - Overview of new features and improvements
API Reference
For detailed API documentation, see the API Reference.
Installing
Use NuGet to install the Terminal.Gui NuGet package:
v2 Alpha
(Infrequently updated, but stable enough for production use)
dotnet add package Terminal.Gui --version "2.0.0-alpha.*"
v2 Develop
(Frequently updated, but may have breaking changes)
dotnet add package Terminal.Gui --version "2.0.0-develop.*"
Legacy v1
dotnet add package Terminal.Gui --version "1.*
Or, you can use the Terminal.Gui.Templates.
Contributing
See CONTRIBUTING.md for complete contribution guidelines.
Debates on architecture and design can be found in Issues tagged with design.
History
See gui-cs for how this project came to be.

