KitFieldError
Visual error message with a polite accessibility announcement.
Place it near the affected field and supply a message explaining how to correct the value. Control its presence from the controller’s validation result.
It inherits KitFieldDescription and uses the danger color. Its live region is polite; actual announcements depend on the backend and assistive technology.
Complete example
This complete Slint file is a visual composition used to produce the screenshot above. Internal strings without a label property retain the kit’s default language; system dialogs follow the host platform. Projected state and callbacks requesting a decision need host wiring; the standalone fixture does not supply that controller. Set up the Rust project, then see the typed controller application for working editing, validation and selection.
// SPDX-License-Identifier: GPL-3.0-or-later
import { KitFieldError, KitTextField, KitTheme, KitThemes, ValidationPresentation } from "@kit/kit.slint";
export component Example inherits Window {
title: "KitFieldError example";
preferred-width: 420px;
preferred-height: 220px;
max-width: 100000px;
max-height: 100000px;
background: root.theme.canvas;
in-out property <KitTheme> theme: KitThemes.light;
in-out property <string> status;
VerticalLayout {
padding: 24px; spacing: 16px; alignment: start;
Text { text: "Field Error"; color: root.theme.text-primary; font-size: 20px * root.theme.text-scale; font-weight: 600; }
KitTextField { theme: root.theme; label: "Email"; text: "alex@"; validation: ValidationPresentation.invalid; } KitFieldError { theme: root.theme; text: "Enter a complete email address."; }
if root.status != "": Text { text: root.status; color: root.theme.text-secondary; font-size: 12px * root.theme.text-scale; wrap: word-wrap; }
}
}
Public API
Inherits KitFieldDescription. The declarations below come from the component source. Parent properties remain available; see the controller guide for state management.