有关Qt closeEvent()的疑惑

[Sherwei]

求解：我在closeEvent()中调用了e->accept()，然后窗口就关闭了。我就是想问一下，我的closeEvent()函数结束后，Qt调用了哪个函数，然后在这个函数中调用close()把窗口关闭了?

[童心未泯的cuzn]

bool QWidget::close() [slot] Closes this widget. Returns true if the widget was closed; otherwise returns false. First it sends the widget a QCloseEvent. The widget is hidden if it accepts the close event. If it ignores the event, nothing happens. The default implementation of QWidget::closeEvent() accepts the close event. If the widget has the Qt::WA_DeleteOnClose flag, the widget is also deleted. A close events is delivered to the widget no matter if the widget is visible or not. The QApplication::lastWindowClosed() signal is emitted when the last visible primary window (i.e. window with no parent) with the Qt::WA_QuitOnClose attribute set is closed. By default this attribute is set for all widgets except transient windows such as splash screens, tool windows, and popup menus.

[Sherwei]

引用 1 楼 cuzn1024 的回复:

bool QWidget::close() [slot] Closes this widget. Returns true if the widget was closed; otherwise returns false. First it sends the widget a QCloseEvent. The widget is hidden if it accepts the close event. If it ignores the event, nothing happens. The default implementation of QWidget::closeEvent() accepts the close event. If the widget has the Qt::WA_DeleteOnClose flag, the widget is also deleted. A close events is delivered to the widget no matter if the widget is visible or not. The QApplication::lastWindowClosed() signal is emitted when the last visible primary window (i.e. window with no parent) with the Qt::WA_QuitOnClose attribute set is closed. By default this attribute is set for all widgets except transient windows such as splash screens, tool windows, and popup menus.

原来是这样啊，我原本是这么理解的的：父类QWidget的closeEvent()里会把窗口给关掉，如果子类重新实现了closeEvent()，那么就会调用子类的closeEvent()就不会调用父类的，而如果子类的closeEvent()里什么都不做的话，那么窗口也就不会关闭了...