3.3.2. Stage

When the system is initialized, a stage object of the Stage class is automatically created, which can be used directly without the need for users to create it themselves.

stage.add_widget(widget_obj)
Description:Adds the controls in the parameter to the UI
参数:widget_obj (object) – Control objects to be added to the UI
返回:None
Example: 
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#Create a Button object and add it to the UI

my_button = Button()
stage.add_widget(my_button)
stage.remove_widget(widget_obj)
Description:Removes the controls of the parameter from the UI
参数:widget_obj (object) – The controls that need to be removed from the UI
返回:None
Example:stage.remove_widget(my_button)
Example description:
 Remove the my_button control from the UI