Qmainwindow closeevent. Please find below the min.

Qmainwindow closeevent. It calls closeEvent (). I have designed simple ui with Qt-designer. accept() # let the window close else: event. Aug 14, 2018 · A common use of QMainWindow::closeEvent() (I think suggested in docs somewhere) is to ask user if certain settings should be saved for next time, etc. We introduce a m_documentModified boolean to track if the text has been changed. To retrieve the values we use settings. It's a royal mess to access the tableView from the closeEvent of the QMainWindow. There are no multiple threads threads here. Nov 22, 2017 · 文章浏览阅读1. Jan 2, 2020 · I need to confirm close main window when unsaved changes user may want to save. but keep it in separate window and keep it accessible to any function in May 12, 2021 · The behaviour I am wanting is to have multiple QMainWindows, docked within a top-level window. In my closeEvent () function I do create a QMessageBox to ask the user if it's okay to exit. If it were me I would check again! And test with some command other than your rosrun. The use of dockCloseEventTriggered is not called as the Gui is closed. Jan 20, 2024 · It works for me, but note that unlike reimplementing QMainWindow::closeEvent (), you cannot cancel application closing. Inside the "closeEvent ()" method, it displays a confirmation dialog asking if you're sure you want to close the Aug 2, 2024 · and the terminal process keeps running. Apr 7, 2020 · 刚刚将closeEvent应用在了一个小例子上面: 我在主进程中fork ()了一个子进程，希望在关闭主窗口后 (也就是主进程退出)结束子进程。那么这个时候一般的做法就是监听窗口的关闭事件；然后将要关闭的窗口向本身进程 (父进程)发送SIGINT信号，主进程通过已注册好的信号捕捉函数来结束子进程。 代码 Sep 3, 2014 · Hi all, I have a Qt application and use closeEvent of QMainWindow. Sep 8, 2014 · The close event doesn't actually make the window close, it's just triggered when the window is already closing. However, when I actually click Exit, it doesn't close the application. Nov 24, 2021 · The biggest problem is closeEvent, with pyside, the window you close is not actually self but self. We would like to show you a description here but the site won’t allow us. PyQt5. Nov 1, 2018 · override the closeEvent method and call event->reject() to prevent the app from closing. Jan 26, 2013 · If you need a signal, and since you already subclass QMainWindow, you can re-implement in your S class closeEvent (QCloseEvent* e). Two questions: Is it acceptable to instantiate two 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 May 25, 2013 · I'm trying to write an application that utilizes a QMainWindow and has a QMenuBar there with File->Exit functionality, which also uses UIC files. Wondering if anyone has encountered such issues May 27, 2025 · What it saves State Whether the window is normal, maximized, minimized (iconified), or in fullscreen mode. 在PyQt中，QMainWindow类是创建主窗口的基类。它提供了一些默认的行为，例如窗口的关闭按钮。当用户点击关闭按钮时，通常会触发closeEvent方法，该方法允许我们执行一些自定义的操作，例如确认关闭操作或保存数据。 然而，有时候我们可能会遇到closeEvent方法没有被调用的情况。这可能是由于一些 The code you are showing above, is this in your closeEvent or just a random function? You can't expect to get a proper result, when closing your app while your NetMan is still doing some stuff If debugging is the process of removing software bugs, then programming must be the process of putting them in. From the looks of your code, you are actually creating two QMainWindow s and the closeEvent is being caught for the wrong one (presumably that one is hidden?). You will see both windows showing up in your windowing manager's "open program windows taskbar". 关闭按钮 最常见的关闭窗口的方式是使用窗口的关闭按钮。当用户点击关闭按钮时，系统会发送一个关闭事件，我们可以通过重写 QMainWindow 类的 closeEvent 方法来处理这个事件。在 closeEvent 方法中，我们可以添加自定义的逻辑来执行一些清理操作，并决定是否真正关闭窗口。 PyQt5 closeEvent方法 在本文中，我们将介绍PyQt5中的closeEvent方法。 closeEvent方法是QMainWindow类中的一个重要方法，用于处理窗口关闭事件。 我们将介绍closeEvent方法的基本用法，并通过示例说明它的具体应用场景和实现方式。 Jul 22, 2014 · Hi, I have re-implemented the function closeEvent on my MainWindow. This is the normal approach to Qt. The function returns the values as Jan 27, 2022 · In this article we will see how we can implement the close event for the QCalendarWidget. If you don't want to sub-class you can probably also achieve it by installing an eventFilter() for the child events in the parent. @Christian-Ehrlicher So if I don't invoke QMainWindow::closeEvent in the subclass MainWindow::closeEvent, that would mean that QMainWindow wouldn't get notified and the application will not close, right? Unless maybe closing the application gets handled somewhere else (maybe QApplication?). I want extra confirmation if the user really want to exit application when clicking X or ,, Feb 10, 2015 · I have two QMainWindow instances, one of which is parent to the other. That was why I tried to override the method of the QMainWindow class, cuz that's what QUiLoader () returns Jul 20, 2024 · 这里的 QMainWindow::closeEvent(event) 实际上是调用 QWidget 中的 closeEvent 方法，因为 QMainWindow 并未重载 closeEvent 方法，它直接使用了从 QWidget 继承的实现。 QWidget 的 closeEvent 实现 QWidget 的 closeEvent 方法负责处理窗口关闭事件。当用户尝试关闭窗口时，Qt 会生成一个 QCloseEvent 对象并将其传递给 closeEvent 方法 Nov 4, 2024 · 文章浏览阅读1. The key is the overridden closeEvent (QCloseEvent *event) method. Please find below the min. The layout has a center area that can be occupied by any kind of widget. But since my self. Then you can connect to that signal to do something right before the window is closed. Dec 28, 2014 · Then implement a new signal called closing() and emit it from your implementation of QMainWindow::closeEvent(). 4k 阅读 Apr 2, 2023 · 文章浏览阅读2. And the event needs to I recently changed from tkinter to Pyqt5 as I'm developing a semi-large application in Python 3. 说明： 事件的ignore函数表示忽略事件，将其传到父组件进行处理 事件的accept函数表示接受事件，组件自己进行处理，不会将事件传递给父组件 但是在这个closeEvent函数中，这两个函数尤其不一样的理解：对于窗口关闭QCloseEvent事件，调用accept ()意味着 Qt 会停止事件的传播，窗口关闭；调用ignore ()则 Qt has QMainWindow and its related classes for main window management. You have to make use of the QWidgets closeevent. The application provides File, Edit, and Help entries in the menu bar, with the following popup menus: The status bar at the bottom of the main window shows a description of the menu Ideally, I want all close calls to pass through my closeEvent (obviously) so that I can ensure that it's safe to close the window. This is how you normally do it. value (key, defaultValue). Start by removing your closeEvent() and self. closeEvent(QCloseEvent *event) { QApplication::closeAllWindows() QMainWindow. ui so it somehow just won't trigger the closeEvent if you define it in the class. This function creates a QMessageBox with a question asking if the user is sure they want to exit. aboutToQuit. closeEvent(event); } The code you are showing above, is this in your closeEvent or just a random function? You can't expect to get a proper result, when closing your app while your NetMan is still doing some stuff If debugging is the process of removing software bugs, then programming must be the process of putting them in. Finally, we accept the current event to signal that it's been processed. If you don't already have your own main window class derived from QMainWindow you should do that first. Apr 18, 2016 · Also one more question do we need to call following line QMainWindow::closeEvent (event) like in the following code if yes why void MyMainWindow::closeEvent (QCloseEvent * event) Jun 24, 2021 · 파이썬에서 PyQt5를 이용해서 GUI를 구성한 코딩을 할 때 창이 닫히는 순간 특정 이벤트를 실행하게 할 수 있습니다. I want Popup MessageBox when close window, So I Write like below I have the following example code but closeEvent is never working. However, I do expect that upon pressing exit, that the application Jun 13, 2022 · So I am creating an application on Qt Creator with python as my backend and I have a problem that i can't seem to pin point. py from ui_mainwindow import Jul 22, 2023 · 本文介绍在PyQt5开发中如何通过重写closeEvent ()方法实现关闭窗口时的自定义操作，如通知服务器用户已断开。文章提供两种常见实现方式：自定义类+继承和在自定义窗口直接重写。 Jun 18, 2019 · Also, the reason I want the closeEvent, because I want to stop loading page/free resources or do something to fix this QtWebEngine issue: QWaitCondition: Destroyed while threads are still waiting I noticed this issue only occurs when page loading is in progress while I close the program. Therefore, your closeEvent method is never called because you never show your MainWindow instance. QMainWindow comes with a default menu bar, but you can also set one yourself with PyQt5 closeEvent 다루기 들어가는 글 항상 뭔가를 클릭할 때에는 이벤트가 생깁니다. The Constructor that the class inheriting the QMainWindow has is called but the over ridden methods aren't called. 2w次，点赞5次，收藏6次。本文介绍了在Qt中如何处理QMainWindow的关闭事件，包括使用close ()函数和重载closeEvent (QCloseEvent*)函数的方法，以及如何通过弹窗询问用户是否确认退出。 Jul 17, 2022 · JonB wrote on 18 Jul 2022, 13:14 #4 @ Harborman said in Closing all window instances when MainWindow () is closed: I just don't know how to tie them to the default close button. What "terminal" process"? You have created a QApplication and shown a QMainWindow, so this application is not running in a terminal. When I close the QMainWindow window , its not handled by closeEvent method. So simply use this: exit_action. Creating Menus ¶ Qt implements menus in QMenu and QMainWindow keeps them in a QMenuBar . 파이참 IDE환경에서 Ctrl + B를 누르면 Apr 18, 2016 · My GUI hangs when click on X mark on top right and if I use following code class MyMainWindow:public QMainWindow { } void MyMainWindow. And your app may stuck in the loop @ while (!replySaveAccountReceived) @ The code you are showing above, is this in your closeEvent or just a random function? You can't expect to get a proper result, when closing your app while your NetMan is still doing some stuff If debugging is the process of removing software bugs, then programming must be the process of putting them in. ui is a QMainWindow that is not being shown, and is not added to the UI of GUIForm. destroy(), and there was a small chance Jul 3, 2018 · But you loose the geometry of the QMainWindow designed with Designer (and maybe something more but I don't have the skill for investigating further) We should find a way to modify the inner closeEvent method but I don't know how to do it. So I can override closeEvent() easily. The window manager will decorate the window later. The strange thing is that, while all click events are correctly generated when the user cl Apr 23, 2022 · 本文已参与「新人创作礼」活动，一起开启掘金创作之路 Qt程序关闭前，有时候需要弹出一个确认窗口，如何实现呢？ 当鼠标点击窗口右上角的关闭按钮时，会触发一个窗口关闭事件（QCloseEvent），只需要覆写窗口类的closeEvent (QCloseEvent *event)函数，就可以对此事件进行相应处理 在关闭窗口时触发信号 在 PyQt 中，QMainWindow 类提供了一个叫做 closeEvent 的事件处理函数，它在窗口关闭之前被调用。我们可以重写这个函数，并在里面发送一个自定义的信号。 下面是一个使用自定义信号的示例代码： Sep 24, 2022 · Hmmm the closeEvent () of StackingDlg also doesn't get triggered. Apr 18, 2016 · Also one more question do we need to call following line QMainWindow::closeEvent (event) like in the following code if yes why void MyMainWindow::closeEvent (QCloseEvent * event) Jul 19, 2018 · Your code confirms what I suspected: you are not using your MainWindow , but the QMainWindow * member variable of your MainWindow class. The only argument this function gets is of type QCloseEvent, and it's called whenever the user tries to close the app. close(), which will have the side effect of triggering a QCloseEvent. Jan 4, 2020 · 如果关闭QWidget，就会产生一个QCloseEvent，并且把它传入到closeEvent函数的event参数中。改变控件的默认行为，就是替换掉默认的事件处理。 原生的英文提示框： 修改成中文样式： Sep 3, 2020 · I thought that i would just override "closeEvent", but for some reason it doesn't get called when pressing the closing button. Just reimplement closeEvent () in you QMainWindow subclass and close your widgets there. 在常见的关闭窗口情况下，用户可以通过点击窗口的关闭按钮，或者使用快捷键（如Alt+F4）来触发关闭事件。然而，在这些情况下，我们需要确保应用程序能够正确执行一些善后操作，如保存数据、关闭文件等。 正确关闭 QMainWindow 的方法 在 PyQt5 中，我们可以使用 closeEvent 方法来处理窗口关闭事件 Thanks for the suggestion! But now I'm getting this: TypeError: closeEvent () takes exactly 1 argument (2 given) This document describes how to save and restore a window's geometry using the geometry properties. 0 SOffline SOffline Sprezzatura The QMainWindow class provides a main application window. Jan 6, 2010 · Make the window/widget to modality, such that users cannot able to close the mainwindow until you close the other. g. I don't know if there are consequences of calling this while inside MainWindow::closeEvent (). You will need a "wait for" event loop here instead, because you don't want to accept the original close event until this has completed. Next, we define a slot function closeEvent that handles the close event of the main window. from PyQt5 import QtCore, QtGui, QtWidgets import threading class Ui_MainWindow(object): # I also tried QtWidgets. Jan 28, 2024 · 文章浏览阅读492次。本文介绍了在PyQt中遇到QMainWindow的closeEvent方法未被调用的情况及其常见原因，包括未正确重写closeEvent、未正确连接closeEvent信号以及在子类中重写closeEvent但未调用父类方法。提供了相应的解决方案，帮助开发者确保在窗口关闭时能够执行自定义操作。 where MyWindow derives from QMainWindow and overwrites the closeEvent(QCloseEvent*) method, this method is called when I close the application window (e. You can see an image of the layout below. Nov 6, 2018 · when close() is called, closeEvent() is also called, as differences between the clicked of the button and the call to close()? Mar 17, 2014 · 我在python中使用pyqt4。当我关闭QMainWindow窗口时，它不是由closeEvent方法处理的。请告诉我这段代码出了什么问题：from PyQt4 import QtCore, QtGuiclass Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow. If you do not want your widget to be hidden, or want some special handling, you should reimplement the event handler and ignore () the event. There is a bit of precise detail below, but the problem ought For some reason, it treats QMainWindow and QDialog differently. May 16, 2022 · Qt：closeEvent函数不调用的问题 closeEvent函数由事件QCloseEvent触发，所以必须有事件循环的情况下才会触发。此外，closeEvent是顶层窗口才调用。所以： 子控件可能不会触发此函数。但如果主动调用close ()函数，则会触发closeEv. I think it'd be definitely interesting to check this example out. The problem I'm having is that if I close the child QMainWindow using the window close button, the window closes and focus returns to the parent, BUT, if I close it via a menu item (connected to the window's close slot), both windows close and the application terminates. For example: Jul 22, 2014 · You put an event loop to sleep, so Qt is not able to send any signals. If the second argument to load is an instance of one of those classes, it will become the parent of the returned widget. Feb 1, 2021 · 文章浏览阅读1. It seems work Feb 12, 2012 · Override the closeEvent method of QWidget in your main window. You can add new menus to the main window’s menu bar by calling menuBar(), which returns the QMenuBar for the window, and then add a menu with addMenu() . closeEvent () method to override it in this case. 8 Every time I had to close windows I used the method self. triggered. They are also sent when you call QWidget::close () to close a widget programmatically. When this Feb 19, 2022 · 2 in my application, I override QMainWindow::closeEvent in order to do some logic before closing the app. Size The widget's width and height. I am failing to get a Quit button to behave just like clicking on the "window close" "X" icon. "Try to use the closeEvent!", I thought, but as it turns out this isn't that easy for me. click the windows (x) close button), but it is not invoked when I close the application via the main Menu -> "Quit " or via the "CMD + Q" key shortcut. May 27, 2025 · The closeEvent () function is like a special receiver built into every window (QWidget) in your Qt application. closeEvent (), I don't know how to get to the self. However, I nev Apr 25, 2025 · In the exercise above - Import the necessary modules from PyQt5. Please someone tell me what is wrong with this code: from PyQt4 import QtCore, QtGui class Apr 3, 2021 · The problem is that "A" is a widget that is not displayed, it is not the window, so override closeEvent does not make sense. main. Edit: If you decide to delete S manually in the slot connected to that custom signal be very careful. Below is the Jul 19, 2023 · 好的，用户想知道如何在Qt中重写窗口关闭事件。首先，我得回忆一下Qt的事件处理机制。通常，处理事件需要重写对应的事件处理函数，比如关闭事件对应的是closeEvent ()。根据引用 [1]中的内容，当窗口关闭时，会发送一个QCloseEvent事件，默认的closeEvent ()会接受这个事件并隐藏窗口。如果用户想要 May 7, 2020 · { view. If you click the X button on window "A" it is the object representing the window "A" that will receive the event and not any other. Apr 18, 2016 · QMainWindow::closeEvent (event) } 1 Reply Last reply 18 Apr 2016, 09:58 0 kshegunov Moderators @Qt Enthusiast 18 Apr 2016, 09:58 @Qt-Enthusiast said: do we need to call following line QMainWindow::closeEvent (event) No, you don't need to call it. 'self. The default implementation of this event handler accepts the close event. This is particularly important for top-level windows (like QMainWindow or QDialog). 예를 들어 창이 닫힐 때 "정말 닫을건가요?" 라고 묻는 팝업 창을 띄울 수 있습니다. However, I do not begin to understand how to do this from my environment: We use Qt Designer, so it produces the class: MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) That goes into mainwindow Oct 16, 2007 · closeEvent preventing shutdown It seems that when I implement the QMainWindow::closeEvent () function, my application blocks shutdown -ie, when I shutdown the computer, it tries to close all the apps but chokes on my Qt app, and so it doesn't shut down. QMainWindow, makes no difference def __init__(self): Mar 17, 2014 · I'm using pyqt4 in python. See full list on doc. Feb 5, 2018 · I would like to give a choice if the user is sure to close the app, when the Windows close button is being pressed? So far I've coded this, which prompting that the App is about to quit, but I coul Nov 25, 2021 · I'm using PySide6 now. To actually make the window close, you need to call self. So what i want to do is have a function called when the user exits the application but the function closeEvent (self, event:QCloseEvent) is never called. Which may or may not what you intend. connect(self. Weirdly enough, it does exit. [EDIT] And your app may stuck i Industry standard compositing, editorial and review Nuke®, NukeX® and Nuke Studio®, alongside Hiero® and HieroPlayer® work together to create more efficient workflows, with cutting-edge toolkits for node-based compositing, editorial and review. However as soon as I tested it out in Maya 2018, while the Gui shows up, it seems that none of the signals are working. No signals or slots will fire while your loop executes. If you want to know when a QWidget is closed, you can sub-class and override the closeEvent(). By default, the event is accepted and the calendar is closed. Feb 12, 2020 · Hi, I am trying to code so that if the user clicks X on the main window frame to exit, it pops a message asking if he really wants to quit (could've been acc The event handler QWidget::closeEvent () receives close events. May 31, 2019 · If you press the "X" button in the window it will not be called the closeEvent of the widget but the QMainWindow, the explanation is the same as the previous one. app. 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。 Nov 21, 2017 · UnPySide | PySide | PySide2 | シンプルなイベント処理ToolやPipelineを専門とするTechnical Artistです。主にメモ帳代わりにして、DCCツールやQt for Pythonの情報を中心に気ままに更新しています。 ご質問・ご相談・お仕事のご依頼などは、 問い合わせ よりお気軽にお送りください。 Apr 16, 2013 · I'm developing a Qt application and changed the closing behavior with the closeEvent virtual function this way: class MainWindow(QMainWindow): def closeEvent(self, event): event. For example: class MainWindow(QWidget): # or QMainWindow def closeEvent(self, event): # do stuff if can_exit: event. You can get a lot of answers to your Python for QT questions. QMainWindow provides the framework for windows that have menus, toolbars, dock windows, and a status bar. 7w次，点赞10次，收藏54次。本文介绍如何在Qt应用程序中处理QCloseEvent事件，通过重写closeEvent函数实现自定义关闭行为，例如在关闭前询问用户是否保存更改。 We would like to show you a description here but the site won’t allow us. closeEvent () is tied to my View (QtWidgets. Oct 14, 2017 · 文章浏览阅读2. loadUi()' with PyQt. Oct 5, 2010 · You still don't understand. Check Qt::WindowModality. I tried this->close (); and qApp->quit (); but it doesn't work. Sep 17, 2014 · The key is to create a subclass of the QtGui. The docked windows will present some aspect of the application and I need to know when they close, but Nov 23, 2020 · @Mikeeeeee What class is ui. That is self. Moreover I don't like to have two QMainWindow. QMainWindow) and not the self. close) The documentation of close describes the interaction between close and closeEvent: bool QWidget Feb 17, 2023 · Then it will need to be sub-classed from QMainWindow, so that you can override its methods like closeEvent(). On Windows, this is basically storing the result of QWindow::geometry () and calling QWindow::setGeometry () in the next session before calling show (). connect(myExitHandler The closeEvent () in the Application example shows a close event handler that asks whether to save a document before closing. 2k次，点赞3次，收藏4次。QCloseEvent 是 Qt 框架中用于处理窗口关闭事件的一个类。当用户尝试关闭一个窗口（例如，通过点击窗口的关闭按钮，或者通过调用窗口的close ()方法）时，Qt 会生成一个 QCloseEvent 对象，并将其发送给该窗口的事件处理函数。窗口可以通过重载closeEvent方法来 Feb 12, 2013 · I'm a total newbie in PyQt trying to develop simple application. This document describes how to save and restore a window’s geometry using the geometry properties. Close events are sent to widgets that the user wants to close, usually by choosing "Close" from the window menu, or by clicking the X title bar button. This event handler is called with the given event when Qt receives a window close request for a calendar from the window system. 如果你没有重写virtual closeEvent (QCloseEvent*event);这个虚函数的话，系统是默认接受关闭事件的，所以就会关闭窗体，但有的时候，比如在记事本程序中，但你的文本未保存时，点击关闭按钮，就会跳出是否保存的提示框，这是 Jul 22, 2014 · After the timer is expired MainWindow is closed and I guess is destroyed so there are no active slots to receive the signals. PyQt5 closeEvent不能触发 在PyQt5中，closeEvent是一个重要的事件，它在窗口被关闭时被触发。然而，有时候在实际的编程过程中，我们可能会遇到closeEvent不能被正确触发的情况。本文将详细探讨closeEvent的作用、原因以及解决方法。 closeEvent的作用 closeEvent是QWidget类的一个事件，用于处理窗口关闭的操作 Mar 31, 2013 · The QMainWindow object is not destroyed until C++ scope rules dictate (stack allocated objects) or operator delete is called (heap allocated objects). Nov 2, 2024 · In the code above, we start by importing the necessary modules from PyQt6, including QApplication, QMainWindow, and QMessageBox. The code you are showing above, is this in your closeEvent or just a random function? You can't expect to get a proper result, when closing your app while your NetMan is still doing some stuff If debugging is the process of removing software bugs, then programming must be the process of putting them in. Mar 17, 2021 · 窗口关闭事件（QCloseEvent）是当鼠标点击窗口右上角的关闭按钮时，所触发的函数。如果你没有重写virtual closeEvent(QCloseEvent*event);这个虚函数的话，系统是默认接受关闭事件的，所以就会关闭窗体。但有的时… Jun 25, 2009 · Re: Some quest about the closeEvent in QMainWindow you means if i want to call the destroy when click the close button on the QMainWindow, I neet set the WFlags Qt::WDestructiveClose? Isee,I use the QMainWindow in default, and I will try it later, Thanks Quick Navigation Qt Programming Top Nov 23, 2021 · I want to close all other windows opened by the main window when the main window is closed. , user clicks 'X', or close () is called). Emit your custom signal there and call e->accept () to confirm window closing. ig Jun 11, 2022 · So what i want to do is have a function called when the user exits the application but the function closeEvent(self, event:QCloseEvent) is never called. It's the main window's implementation which by default (if I'm not mistaken) just accepts the event. Just to verify, try replacing your event->accept(); with event->ignore();, does that somehow make it work? Nearly all of the code for the Application example is in the MainWindow class, which inherits QMainWindow. Nov 8, 2018 · Hi all, I am having a weird issue with the use of MayaQWidgetDockableMixin. You have to subclass QMainWindow and deploy your Ui_MainWin class on an instance of this subclass. I see https://s I need to confirm close main window when unsaved changes user may want to save. When I am testing my code in Maya 2017, all the signals within are working. Then you can call your quit method inside that one Jan 31, 2018 · i've just started using PyQt5 and i like it so far! but as soon as you start to write code bugs come in :D i've subclassed QMainWindow and reimplemented c May 27, 2025 · Inside closeEvent, we call promptForSave () which shows a QMessageBox. I've stripped my project down to the part that doesn't work despite my efforts - closeEvent is called, it gets accepted, but the window doesn't close. I think that should be happening in closeEvent(), while window is still around and things are relatively safe, not in some final, low-level destructor. quit(), does your application exit when the main window is closed? Mar 23, 2017 · Instead you should subclass and modify the subclass. Then you go override that class's closeEvent(). Eg. QtWidgets import QApplication, QMainWindow, I've commented out the QMainWindow::closeEvent () to test the app will exit without the event propagating to the base implementation. It's the place where your window "hears" this "close" message Sep 8, 2014 · I'm trying to do something quite simple: add a menu bar with an Exit action that will close a QMainWindow when it is selected. Override the closeEvent method to handle window close events. Jul 30, 2021 · 说明： 事件的ignore函数表示忽略事件，将其传到父组件进行处理 事件的accept函数表示接受事件，组件自己进行处理，不会将事件传递给父组件 但是在这个closeEvent函数中，这两个函数尤其不一样的理解：对于窗口关闭QCloseEvent事件， 调用accept ()意味着 Qt 会停止事件的传播，窗口关闭； 调用ignore ()则 Jan 27, 2024 · 文章浏览阅读2k次，点赞12次，收藏16次。本文介绍了如何在Qt中的QMainWindow类中重写closeEvent方法，以便在用户尝试关闭窗口时执行自定义操作，包括阻止或允许窗口关闭。 Jun 14, 2016 · In Qt4 we’ve done this by the overriding closeEvent method, like this: class MainWindow : public QMainWindow { Q_OBJECT public: void closeEvent(QCloseEvent *event) { cleanUp(); event->accept(); } }; In Qt Quick you can do it from QML file by putting desired actions into ApplicationWindow. 마찬가지로 창을 1 J jsulm @Knj-Tkm said in Quit the application when QWidget is closed: How do I use it? You need to override closeEvent in your class. Would the destroy () mf for StackingDlg (which owns the QTableView) be a good location to save the horizontal header state for the table view? UPDATE! Feb 6, 2024 · 文章浏览阅读714次。QCloseEvent是Qt中的一个事件类，用于在窗口关闭之前执行一些操作。可以通过重载QWidget或QMainWindow的closeEvent ()函数来处理QCloseEvent事件。 下面是一个简单的示例代码，演示如何在关闭窗口之前弹出一个确认对话框： ```cpp void MyWidget::closeEvent (QCloseEvent *event) void MainWindow::closeEvent(QCloseEvent *event){ writeSettings(); QMainWindow::closeEvent(event); } How to implement readSettings () In readSettings () we retrieve the settings from the file and set the widget parameters to what we retrieved. PyQt5でウィンドウの閉じるイベントを処理するには、closeEventメソッドを使用します。 このメソッドはウィンドウが閉じられるときに呼び出され、カスタムの閉じる動作を実装するためにこのメソッドをオーバーライドすることができます。 The code you are showing above, is this in your closeEvent or just a random function? You can't expect to get a proper result, when closing your app while your NetMan is still doing some stuff If debugging is the process of removing software bugs, then programming must be the process of putting them in. @ QThread::msleep(1000); @ After the timer is expired MainWindow is closed and I guess is destroyed so there are no active slots to receive the signals. setObjectName("Ma Also one more question do we need to call following line QMainWindow::closeEvent (event) like in the following code if yes why void MyMainWindow::closeEvent (QCloseEvent * event) Restoring a Window’s Geometry ¶ How to save and restore window geometry. qt. Or use application/main window eventFilter. io QCloseEvent is part of Event Classes. class MainWin: public QMainWindow { private: void closeEvent(QCloseEvent *event) override; } void MainWin::closeEvent(QCloseEvent *event) { qDebug() << "Closing"; event->accept(); } Is MainWin a QMainWindow? Dec 21, 2012 · In my application I have a tray icon and so I overrode closeEvent so that the application "minimizes" when certain things happen. 7. Nov 13, 2023 · Then, we call the closeEvent() of our superclass QMainWindow to ensure the app's window closes correctly. May 27, 2023 · Then, we call the closeEvent() of our superclass QMainWindow to ensure the app's window closes correctly. We can reimplement this function to change the way the widget responds to window close requests. ui' Like how ppl load ui with 'uic. _qt. This is very useful for independent top-level windows in a multi-window application. The normal way to do this is sub-class from QMainWindow and override closeEve Apr 9, 2013 · I would close QMainWindow, when QDialog don't return QDialog::Accepted. You can't expect some arbitrary instance of an arbitrary subclass of QWidget to receive any possible closeEvent. mainWindow? It needs to be your class derived from QMainWindow. Instead you should use an event filter to monitor the window's events. Aug 2, 2021 · But, as suggested before, it is even easier: overwrite QMainWindow::closeEvent(). QMainWindow has its own layout to which you can add QToolBar s, QDockWidget s, a QMenuBar , and a QStatusBar . I think: In your MainWondow subclass QMainWindow and you should get (be able to override) closeEvent(). I want to save information over the network before closing my mainProgram. QActions are added to the menus, which display them as menu items. Look at QEventLoop::exec (). The normal way to do this is sub-class from QMainWindow and override closeEvent(). If you use the Qt::WA_DeleteOnClose attribute a heap-allocated QWidget object will be destroyed if the object's closeEvent () accepts the closure. close(); QMainWindow::closeEvent(event); } Having your separate gfx window has consequences for the native windowing system. you need to relook into its implementation. onClosing method. QtWidgets의 closeEvent 메소드를 오버라이드 하는 방법입니다. On X11, this might not work because an invisible window does not have a frame yet. I tried several things, that I found here on stackoverflow, but nothing works for me. Any ideas? I tried implement void closeEvent (QCloseEvent* event), but I don't know how do it correctly (remember about destructor). Position The widget's X and Y coordinates on the screen or within its parent. eventFilter() is really advanced and rarely needed. 5k次，点赞3次，收藏14次。在Qt中，当用户尝试关闭窗口时，会触发QCloseEvent。通过重写closeEvent函数，我们可以添加自定义行为，例如弹出确认对话框询问用户是否真的要退出。如果用户点击确认，窗口关闭；否则，窗口保持打开状态。 Jan 14, 2021 · If you say it does work from other places I can't see why QMainWindow::closeEvent() would not work, it really should be fine/not be relevant from there. If you want the widget to be deleted when it is closed, create it with the WA_DeleteOnClose flag. Why don't you setup MainWindow rather than that member variable ? Jan 2, 2020 · Anyway, the end result is that means I can create my own Python subclass of QMainWindow and pass that instance to the code generated for setting the stuff from Qt Creator. The Constructor that the class inheriting the QMainWindow has is called but the over ridden methods aren't called Is there any way to load ui with Pyside6 that the widgets become attributes of the class instead of attributes of another attribute of the class e. I want to stop the user from closing the application if some process is still working. This method is called automatically when the window is about to close (e. Feb 11, 2013 · 问题是： 当我在主窗口上单击X时，closeEvent函数不会触发 当我单击“退出”按钮或从菜单中选择“退出”时，函数 调用，但单击Yes不会关闭应用程序。 我在SO上找到了一些问题，并搜索了教程，但是没有任何问题涉及到这样的问题。我做错了什么？ Nov 24, 2021 · 本文介绍了如何使用Python的PyQt5库来实现关闭主窗口时同时关闭所有子窗口的功能。关键在于重写QMainWindow的closeEvent方法，在该方法中添加对所有子窗口关闭的判断。通过创建一个主窗口类MyMainWindow，继承自重写后的RQMainWindow，并添加按钮来打开子窗口。当点击主窗口的关闭按钮或特定按钮时，会 Feb 10, 2021 · PyQt5学习笔记4 - closeEvent ()重写，添加关闭窗口触发的事件 转载 于 2021-02-10 12:02:22 发布 · 6. It's the place where your window "hears" this "close" message We would like to show you a description here but the site won’t allow us. code that I was testing: from PyQt5. Closing in itself does not emit any signal, so that is the way to recognise it. ignore() Another possibility is to use the QApplication 's aboutToQuit signal like this: app = QApplication(sys. 1. QMainWindow and edit its closeEvent function so that it also executes the print statement (or, in my case, other code ;) ) after the window is closed. Aug 14, 2018 · Is it by design that exiting the application with QApplication::quit() does not trigger closeEvent() of the main window? I was under the impression that qApp->quit() is the right way to exit the app, and the right slot to connect the "File -> Exit" menu action to. Create a custom "QMainWindow" class named "MyMainWindow" that sets up the main application window. How to Window Close Button Event in PySide Qt for Python Examples In order to set the close event for your window with say button or even without it. On X11, this might not work because an invisible window does not Oct 14, 2017 · QCloseEvent事件是指，当你鼠标点击窗口右上角的关闭按钮时，所触发的函数. argv) app. I would like run destructor while closing main window to delete pointers. I'm currently learning how to build an application with pyqt5 and encountered some problem with closeEvent method, overriden so user gets asked for confirmation by QMessageBox object. affejzse uquq uwmf jiayy olytutg reqo kqjpbch qukisdf wiqfq fwfys