Qt closeevent. When a widget accepts the close event, it is hidden (and destr...
Qt closeevent. When a widget accepts the close event, it is hidden (and destroyed if it was created with the Qt::WA_DeleteOnClose flag). The closeEvent () in the Application example shows a close event handler that asks whether to save a document before closing. 2w次，点赞6次，收藏36次。本文介绍了Qt中QWidget类的closeEvent方法，通过重写此方法可以控制窗体的关闭行为。具体实现包括显示确认对话框，根据用户选择接受或忽略关闭事件。 Jun 23, 2021 · 在平常使用软件的时候，常常能遇到这样的情况：点击关闭选项后，程序没有马上退出，而是跳出一个对话框，问你是否确定退出软件？ 在Qt中同样提供了一个函数来实现这个功能，那就是QCloseEvent 它的具体定义是这样的： void QMainFrame::closeEvent ( QCloseEvent We would like to show you a description here but the site won’t allow us. This can happen when the user clicks the 'X' button, a programmatically called QWidget::close (), or when the window manager sends a close request. List of all members, including inherited members Properties accepted : bool Detailed Description Notification that a window is about to be closed by the windowing system (e. 0] bool QEvent:: isSinglePointEvent () const Returns true if the event object is a subclass of QSinglePointEvent. Custom Widgets and Painting Since QWidget is a subclass of QPaintDevice, subclasses can be used to display custom content that is composed using a series of painting operations with an instance of the QPainter class. the user clicked the title bar close button). . In your closeEvent (), call event->ignore (). trjyjovq rafpjqe bxn xvm pji tmx gdhm xqdeo vyydxudl qxtkl
