# Hello panels

![Native hello panel using generated example data](screenshot.png)

Build native UI with EpicTuner controls: sections, form fields, bindings, tabs,
tables, charts and independent windows. The plugin source is [hello.cpp](hello.cpp).

## Build and run

Set `EPICTUNER_SDK_ROOT` to the extracted SDK root, then run from this directory:

```sh
cmake --preset sdk
cmake --build --preset sdk
epictuner --plugin-development --plugin-manifest /absolute/path/out/plugin.json
```

Use the `.exe` application name on Windows. Copy the `assets` directory with the
library/manifest if moving the build. For a signed package, follow
[Publishing](../../docs/PUBLISHING.md) or build the [test catalog](../../docs/EXAMPLES.md).

## Acceptance

Open **Plugins → Examples → Hello panels**. Edit Name and Target lambda using
Enter and Escape; change Mode and the checkbox. Click Say hello. The status
changes only on that action. The mirrored field shares the value.

Open Inspector A twice: it focuses the same instance. Open Inspector B and
give each a different note. Close and reopen them; instance state stays separate.
Open the modal dialog and dismiss it with Done. Change theme/scale, move a
floating panel and resize it. Restart the application with the same development
manifest and settings: opted-in values and placement restore without replaying
the greeting action. Invalid edits keep the last valid value.

All data is generated in [hello.cpp](hello.cpp); no ECU or external fixture is
required. [UI.md](../../docs/UI.md) describes the node/property contract.