gtk:toggle-tool-button, gtk:tool-button, gtk:tool-item, gtk:bin, gtk:container, gtk:widget, gtk:buildable, gtk:activatable, gtk:actionable, gobject:object, common-lisp:standard-object, common-lisp:t

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The gtk:radio-tool-button widget is a gtk:tool-item that contains a radio button, that is, a button that is part of a group of toggle buttons where only one button can be active at a time.

Use the gtk:radio-tool-button-new function to create a new radio tool button. Use the gtk:radio-tool-button-new-from-widget function to create a new radio tool button that is part of the same group as an existing radio tool button. The gtk:radio-tool-button implementation has a single CSS node with name toolbutton.