【提问】QWidget的close()和hide()有什么区别？ [复制链接]

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.

下面是引用lj_0212于2006-03-02 11:19发表的:
先感谢一下！
我马上测试一下。
再问几个问题？
那是否意味着已经不需要显示的窗口部件只调用一下close()就可以了？这样不会占用内存空间么？不会因为这样做造成溢出吧？