Documentation
Examples
Button Callback

Button Callback

Demonstrates interactive widgets with callback functions that update the UI in response to user actions.

Button Callback Screenshot

Features

  • Creates a label and two buttons
  • Tracks button click count
  • Updates the label text when buttons are clicked
  • Shows how to use closures to maintain state

Code 

// Button with callback example
// Demonstrates interactive widgets and state updates

require("v0.2")

let clickCount = 0

let label = widget.NewLabel("Click the button below")

let button = widget.NewButton("Click me!", () => {
    clickCount = clickCount + 1
    label.Text = `Button clicked ${clickCount} times`
})

let resetButton = widget.NewButton("Reset", () => {
    clickCount = 0
    label.Text = "Click the button below"
})

// Create vertical layout with widgets
let layout = container.NewVBox(
    label,
    button,
    resetButton
)

window.SetContent(layout)

Running 

cd examples/02-button-callback
go run main.go

Or with the fynerisor CLI:

fynerisor script.risor

Full Source

View full example on GitHub ↗

Hello WorldForm Input