Testing Utilities for testing GTK+ applications @window_title: @dialog_text: @Returns: @widget_type: @first_property_name: @Varargs: @Returns: @window_title: @dialog_text: @Varargs: @Returns: @widget: @label_pattern: @Returns: @base_widget: @widget_type: @Returns: @widget: @label_pattern: @widget_type: @Returns: @argcp: @argvp: @Varargs: @n_types: @Returns: @widget: @Returns: @widget: @percentage: @spinner: @button: @upwards: @Returns: @widget: @Returns: @widget: @string: @widget: @button: @modifiers: @Returns: @widget: @keyval: @modifiers: @Returns: