Qt connectSlotsByName(QObject *)（转）

我们编辑ui文件时候可以这样使用槽函数， on_objectName_signal(args) ; 非常简便，文档说明是下面

1 void QMetaObject::connectSlotsByName ( QObject * object ) [static]
2 Searches recursively for all child objects of the given object, and connects matching signals from them to slots of object that follow the following form:
3 
4 void on_<object name>_<signal name>(<signal parameters>);
5 Let's assume our object has a child object of type QPushButton with the object name button1. The slot to catch the button's clicked() signal would be:
6 
7 void on_button1_clicked();

尽管这里的button1是ui对象下的，它也是可以这样使用的,相当于系统自动建立好了连接。

它等同于在MainWindow。cpp中：connect(ui->button1, &QPushButton ::clicked, this, on_button1_clicked);

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原文链接：https://blog.csdn.net/liulihuo_gyh/article/details/45535675