Toggle

ui.Toggle creates a button that stays pressed while a *bool is true, as Bold in an editor's toolbar: a click presses it or lets it go, as does Space while it has the keyboard focus, and Changed reports a change.

ui.Toggle(c, &app.inspector, "Inspector")

Give it other content, such as an icon, with Children and an empty label, and name it with Label:

ui.Toggle(c, &app.bold, "").Label("Bold").Children(func() { ui.Icon(c, boldIcon) })

Toggle groups

ui.ToggleGroup draws the toggles and buttons inside it joined, as the segments of one control, as Bold, Italic and Underline. They are one stop of Tab, among which the arrows move the focus, as in a toolbar:

ui.ToggleGroup(c, func() {
	ui.Toggle(c, &app.bold, "B")
	ui.Toggle(c, &app.italic, "I")
	ui.Toggle(c, &app.underline, "U")
}).Label("Style")

For a choice of one among several, as a view mode, use a segmented control.

Without a look

ui.ToggleBase is a toggle without a look: a row that turns its *bool over when clicked: see custom widgets.

Accessibility

Assistive technology sees a toggle button, pressed while on, and a toggle group as a group named by its Label.