States

States are flags that describe the current transient state of a widget based on the events it has received. States are stored in the style object. They are similar to CSS pseudo-classes.

You can style an element based on its state:

bt := core.NewButton(b).SetText("Hover")
bt.Styler(func(s *styles.Style) {
    if s.Is(states.Hovered) {
        s.Background = colors.Scheme.Success.Base
    }
})