from textual.app import App, ComposeResult
from textual.widgets import Button, Label
from textual.containers import Vertical

class ButtonApp(App):
    def compose(self) -> ComposeResult:
        yield Vertical(
            Button("Cliquez-moi !", id="mon-bouton"),
            Label("", id="message")
        )

    def on_button_pressed(self, event: Button.Pressed) -> None:
        if event.button.id == "mon-bouton":
            self.query_one("#message", Label).update("Bouton cliqué !")

if __name__ == "__main__":
    app = ButtonApp()
    app.run()