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The Source class is a decorated class, and the Decorator class is a decorated class. You can dynamically add some functions to the Source class. The code is as follows:On the right side of the form in Figure 1 is a QCalendarWidget component, which displays dates in the form of a calendar and can be used for date selection. QCalendarWidget has a signal selectionChanged (), which is transmitted after the date selected on the calendar changes. Create a slot function for this signal and write the following code:According to your description, TD-SCDMA/GSM mobile phones do not support telecommunication networks and cannot use telecommunication mobile phone cards.When the baby boy was dying, his father decided to pull out his throat with pain. The poor baby boy did not eat a mouthful of milk until his death.At this point, DDoS Attack and Defense: The first part of the introduction from principle to practice is completed. Welcome to offer more insights.Console.log (application);杨长帆托腮皱眉，制军器，歼鬼倭，我没做什么错事吧。