Files

KitFileDropZone

File drop target enabled by an actual host capability.

Set DropCapability.available only after checking the backend. Inspect formats in can-drop(DropEvent) and resolve native data asynchronously in dropped.

Both callbacks return an explicit DragAction. In .unsupported mode the zone explains the alternative; pointer events alone do not establish external drop support.

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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 { DropCapability, KitButton, KitFileDropZone, KitTheme, KitThemes } from "@kit/kit.slint";

export component Example inherits Window {
    title: "KitFileDropZone example";
    preferred-width: 520px;
    preferred-height: 270px;
    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: "File Drop Zone"; color: root.theme.text-primary; font-size: 20px * root.theme.text-scale; font-weight: 600; }
        KitFileDropZone { theme: root.theme; capability: DropCapability.unsupported; } KitButton { theme: root.theme; text: "Choose files…"; activated => { root.status = "Action requested"; } }
        if root.status != "": Text { text: root.status; color: root.theme.text-secondary; font-size: 12px * root.theme.text-scale; wrap: word-wrap; }
    }
}

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Public API

Inherits Rectangle. The declarations below come from the component source. Parent properties remain available; see the controller guide for state management.

Properties

Types and variants

Names below use Slint syntax. Shared Rust domain types live in slint_kit; presentation enums come from the Rust types generated by Slint.

Callbacks

• can-drop(DropEvent) → DragAction
• dropped(DropEvent) → DragAction

See also

• KitFilePicker
• KitFileList