<interface> <template class="GtkHexView" parent="GtkBufferView"> <property name="css-name">GtkHexView</property> <child> <object class="GtkComposingArea" id="offsets"> <style> <class name="gutter"/> </style> </object> </child> <child> <object class="GtkComposingArea" id="hex"> <property name="hexpand">true</property> <style> <class name="custom-view"/> </style> </object> </child> <child> <object class="GtkComposingArea" id="ascii"> <style> <class name="custom-view"/> </style> </object> </child> </template> </interface>