The self.__last instance attribute (which is a private attribute because it starts with a double underscore) holds the previous mouse click position.
__last实例特性(它是一个私有特性,因为它以双下划线开头)包含上一次鼠标单击位置。
The self.__last instance attribute (which is a private attribute because it starts with a double underscore) holds the previous mouse click position.
__last实例特性(它是一个私有特性,因为它以双下划线开头)包含上一次鼠标单击位置。
应用推荐