tool extends EditorPlugin func _enter_tree(): # Initialization of the plugin goes here # Add the new type with a name, a parent type, a script and an icon add_custom_type("kh_window", "MarginContainer", preload("kh_window.gd"), preload("icon.png")) func _exit_tree(): # Clean-up of the plugin goes here # Always remember to remove it from the engine when deactivated remove_custom_type("kh_window")