如何在Qt子类中处理信号？
如何处理子类中的信号？假设我的子类派生自 QTextEdit 并且对信号 textChanged 感兴趣。将对象连接到自身似乎很愚蠢，我应该能够简单地重写 textChange 方法 - 但它不是虚拟。
接受的方法是什么？
How do I process a signal of in a subclass? Let's say my subclass is derived from QTextEdit and is interested in the signal textChanged. It seems silly to connect an object to itself, I should be able to simply override the textChange method -- but it isn't virtual.
What is the accepted way to do this?
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您无法实现/覆盖信号，因此唯一的方法是创建一个新插槽并将其连接到 textChanged()：
You can't implement/override a signal, so the only way is to create a new slot and connect it to textChanged():
也许这看起来很愚蠢，但这就是我所做的：将我的派生类连接到父类发出的信号。
但我很感兴趣是否还有其他解决方案！
Maybe it seems silly, but that's the way I did it : connecting my derived class to the signal emited by the parent class.
But I'm interested if there are any other solutions !
将信号连接到同一类中的插槽是完全可以的。
因此，实现您的插槽并将其连接到
textChanged(QString)It is perfectly ok to connect a signal to a slot in the same class.
So implement your slot and connect it to
textChanged(QString)