Constructor - Responsive

Authoritative source: ref/doc/iced/widget/fn.responsive.html.

# Rustdoc summary

Creates a new Responsive widget with a closure that produces its contents.

# Verified signature

pub fn responsive<'a, Message, Theme, Renderer>(
    f: impl Fn(Size) -> Element<'a, Message, Theme, Renderer> + 'a,
) -> Responsive<'a, Message, Theme, Renderer>
where
    Renderer: Renderer,

# When to use

Use this constructor/helper as the typed entrypoint for the widget or layout helper it creates.

# Why to use

It gives explicit widget construction with compile-time type checking and builder chaining.

# Example References

• ref/examples/pane_grid/src/main.rs
• ref/examples/layout/src/main.rs

# Related

• Constructors
• Elements

# Use this when...

• You want the canonical entrypoint for creating this widget/helper.
• You need concrete constructor arguments and builder chaining.
• You are wiring UI interactions into typed messages.

# Minimal example

// Call this constructor in `view`, then map events to Message variants.

# How it works

Constructors return typed widget values. You configure behavior via builder methods and emit Message values for update to handle.

# Common patterns

// Keep constructor calls close to their message mapping.
// Prefer small helper functions for repeated widget setups.

# Gotchas / tips

• Re-check argument order in the verified signature on this page.
• Keep side effects out of view; trigger them from update with Task.
• Use the related family page when deciding between module/element APIs.