https://ardour.org/files/doxygen/classGtk_1_1ToggleButton__Class.html
Ardour: Gtk::ToggleButton_Class Class Reference
the open source cross-platform DAW
ardourgtktogglebuttonclassreference
https://doc.wikimedia.org/codex/main/components/demos/toggle-button.html
ToggleButton | Codex
Design system for Wikimedia
togglebuttoncodex
https://demos.telerik.com/aspnet-core/togglebutton/badges
Badges in ASP.NET Core ToggleButton Component Demo | Telerik UI for ASP.NET Core
This demo demonstrates how to configure the badge for the ASP.NET Core ToggleButton component.
badges inaspcoretogglebuttoncomponent