Qdialog resize event

Qdialog resize event. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. show() # Run the main Qt loop. QDialog クラスは、exec() 関数を使用して表示します。exec() 関数は、ダイアログ ウィンドウが閉じられるまでブロックします。 QDialog クラスの戻り値は、QDialog::Accepted (OK ボタンが押された) または QDialog::Rejected (キャンセル ボタンが押された) のいずれかです。 QDialog 是一个对话框窗口类，它提供了一个模态或非模态对话框。模态对话框是指在对话框打开期间，用户无法与其他应用程序交互；非模态对话框则允许用户与其他应用程序进行交互。在 QDialog 中，我们可以添加各种小部件来构建一个功能丰富的对话框窗口。 Detailed Description. The function can be reimplemented in subclasses to customize event handling and add additional event types; QWidget::event () is a notable example. from PyQt5. Jan 23, 2012 · I have a dialog with a big textbox. resize extracted from open source projects. sizeHint () returns a QSize object with a width and height. Your QDialog will be automatically resized at runtime. 检测窗口大小改变的信号. QCursor(QtCore. exec_()) If you don't want to move all the resize logic into the graphics view, create a new signal on your subclass, and connect it to a slot on whatever class should handle the resize event. form = Form() form. line). Dialogs are small contextual windows which are used to communicate with users. The question is very similar to this one. i. Modal dialog for informing the user or for asking the user a question and receiving an answer. Receives the mouse press events for the widget, and primes the resize operation. globalPos (event. Python QDialog. In PyQt you can do: from PyQt4 import QtGui, QtCore. QDialog::showEvent (event); //do centering here, size should be already correct at this point. Oct 4, 2019 · 2. Constructs a resize event with the new and old widget sizes, size and oldSize respectively. sizeHint()): see above; mainWindow. Qt import *. resizeColumnsToContents() and then set size for dialog like this: dialogWidth = tw. 首先我设置了一个 QLabel ，设置这个 QLabal 的布局（不管是 水平布局 1. length() + 24. On the other hand in PyQt5 you have to use the new connection syntax, in addition, the dynamic creation Jul 19, 2018 · This is the method on the parent Widget which creates and shows the Dialog. size())widget. In some earlier browsers it was possible to register resize event handlers on any HTML element. Dialogs are useful GUI components that allow you to communicate with the user (hence the name dialog). You can rate examples to help us improve the quality of examples. There is no such signal by default, but you can create the resized signal, we emit it in the resizeEvent function. From a UI perspective, you can think of Dialogs as a type of floating modal, which covers only a portion Jan 16, 2013 · Using Qt I create a QMainWindow and want to call a function AFTER the windows is shown. Detailed Description. Nov 10, 2016 · Depending on the RadioButton selected some widgets are visible and other not. Mar 13, 2011 · mlong 12 Mar 2011, 19:51. Closes the dialog and sets its result code to r. Now, I want the height to be fixed at its minimal possible size (while the width is still resizeable). If it is closed return false; Hy Alexey and thx for your reply. By default, events are dispatched to event handlers like QObject::timerEvent () and QWidget::mouseMoveEvent (). It's like : The user can input their name in the QLineEdit, and the QDialog's accept() slot is called when the user clicks the OK button. Class/Type: QDialog. resize - 44 examples found. dialogHeight= tw. QObjects receive events by having their QObject::event () function called. Only the (usual) vertical scrollbar should appear. The solution is to set the size with resize () method: self. A dialog is always a top-level widget, but if it has a parent, its default location is centered on top of the Jul 21, 2023 · I do resize the width of the QScrollArea to make it fit to its content and prevent the need for horizontal scrolling. 在PyQt5中，可以使用 resizeEvent 事件来检测窗口大小的改变。. You can use sizeHint () but not as stated in the other answers. const QSize &QResizeEvent:: oldSize const. y () Then, move the window with a correction for the initial click location: self. Similar even when I add QtGui. setObjectName("MainWindow") MainWindow. The needed width is calculated based on the child widgets in that scroll area. Say if you want your dialog to be of size 50% of the total screen then pass 50. I believe your code would be a typical Apr 21, 2020 · 1 Answer. You can add the resize grip by calling QDialog's or QStatusBar's function setSizeGripEnabled (or directly in QtCreator form designer). const QSize &QResizeEvent:: size const. setWindowTitle("MainWindow") MainWindow. If your resizing involves content height to get bigger, you can fit the mainWindow to it like this: mainWindow. arg__1 – int. ArrowCursor)) to the event handler: temporarily shows as arrow, but Forbidden cursor comes back when cursor leaves the Title Bar. Apr 2, 2014 · I think you can can a contents resize event of the viewport judging by the 4. Here's a simple demonstration, using a simple application that displays a QWidget: If you use the QWidget itself, you need to capture QEvent::Close: #include "myEventFilter. Read this article for ignoring the QCloseEvent. globalY-self. myDialog. TL;DR: The OS or platform's windowing-system is responsible of drawing the window-icons/-buttons as well as primary event-handling for actions "minimize", "maximize", etc. I've tried several Qt::WindowFlags, but without success I'm currently running QT4 4. class Main(QMainWindow): Nov 25, 2014 · mainWindow. Much like above, the area just had empty space. QResizeEvent. WindowMinimizeButtonHint) Qt provides a set of ready-made dialogs for file, font, color-selection and more. If you change for instance the width of your "main" Widget and click on "Toggle" button, it will resize everything which is not expected. I want to call my_dialog. My table is compouned of an unknown number of rows, and I resize them with "resizeRowsToContents ()" every time the content of the table has changed. setParent of the dialog is set to QWidget. Example 2: A confirmation dialog box with yes/no buttons. const int MAXWIDTH = 400; const int VERTICALPADDING = 50; // Create Layout. @chetankjain: I believe it is a Qt4-related thing. QWidget(MainWindow) Mar 14, 2007 · The QDialog only contains a QTableWidget within a QVBoxLayout. Some QtWidgets like QDialog have predefined window-flags. PySide6. Examples at hotexamples. Secondly, as mentioned already you cannot really force QDialog to behave differently. Keep in mind that resizing the QScrollArea also resize the whole QDialog. Jan 8, 2019 · 1. To present a prompt before rejecting a QDialog just reimplement the reject slot: #!/usr/bin/env python. See also button() and standardButtons(). clickX = event. Sorted by: 3. I plan to ask about this as a separate question 10. com: 44. QApplication. centralwidget = QtWidgets. WindowMaximizeButtonHint)-- shows the Maximize button but doesn't center the dialog w. When the user clicks on the X button or presses Ctrl+Q, I want the dialog to go to a minimized view or system tray icon, instead of closing. But you should consider that the minimum size is not computed until some events are processed in the event loop. Well, as the title of the thread suggest, I'm searching for a way to disable window-resizing on a QDialog (isn't a QDialog no-resizable by default ?). setWindowFlags(QtCore. setFixedSize (width, height) Argument : It takes two integer as argument i. By using setFixedSize () method we can prevent the resizing of the image. resize(mainWindow. resize (function (sender) { function you need to check is dialog open or not. clickX, event. Window or QtCore. QDialogs may be modal or modeless. x () self. Reimplements: QDialog::showEvent(QShowEvent *event). Let's say you have a main window mainWindow and a widget inside it called content. Manual solution: Detailed Description. size of the dialog is (which is taking some time as it's scaling, loading and setting the palette), then after a resize event occur for that said Dialog I execute the code snipped above. move (event. In Qt, QMainWindow and the various subclasses of QDialog are the most common window types. Your code would look something like this: void MyMainWindow::resizeEvent(QResizeEvent* event) {. Jan 27, 2022 · Event handlers are defined just like any other method, but the name is specific for the type of event they handle. e. Aug 2, 2023 · To make it perfect you would need to register a event filter to the parent widget to catch all resize events and resize the transparent widget accordingly. 要将 Matlab Command Window 嵌入到一个 QDialog 中，使得这个窗口控件随着窗口大小的改变而改变。. The QDialog component is a great way to offer the user the ability to choose a specific action or list of actions. resizeEvent 事件在窗口的大小发生变化时发出信号，并将新的窗口大小作为参数传递给相应的槽函数。. I didn't use it myself but you can check the Qt source code on git for QStatusBar or QDialog. For example: pixmap=QPixmap(widget. Here the extract of the code that might be helpful to understand the problem (I know it is just void QMainWindow:: addToolBar ( Qt::ToolBarArea area, QToolBar * toolbar) Adds the toolbar into the specified area in this main window. As a result, the dialog is displayed with the fixed size, but the cursor takes a resizing shape when hovering the border (I would like to disable this), and height can be modified (not width). These classes are specifically designed for building custom dialogs: Apr 28, 2011 · Store the coordinates of the first click in mousePressEvent: self. Try my code, it works Create a function called set geometry, and pass your QDialog pointer and the percentage of size with respect to screen. Nov 29, 2023 · Window: resize event. When those children were resizing to larger, the QWidget would resize to accommodate, but not when they became SMALLER. This event is not cancelable and does not bubble. You can trigger behaviors in response to user input, such as button presses or text input, or events in your own code. done (arg__1) ¶ Parameters. class Rendering starts at targetOffset in the target. Like this: // protected override. void QDialog::reject () Hides the modal dialog and sets the 当QT运行时自动调用resize函数事件或者其他窗口控件大小发生变化产生resize事件。 假如你想拖动主窗口（或改变大小）的时候，能够让窗口中的组件随着窗口也能缩放的话，需要重写resizeEvent，原因在于，窗口构造结束之后，子窗口的大小就是固定的。 May 3, 2019 · In the answers to the other question do not explain the cause of the problem so in my answer will try to cover as much as possible. QtCore. 6 days ago · QDialogs can also have a QSizeGrip in their lower-right corner, using setSizeGripEnabled (). 这就要重写 resizeEvent (QResizeEvent *event) 函数。. Qt. Mar 6, 2018 · 1. The toolbar is placed at the end of the current tool bar block (i. Jul 10, 2013 · tw. The desired window-buttons can be set using widget. QDialog): # Dec 19, 2015 · For instance you can specify only the TitleHint and SystemMenu flags by doing: QDialog *d = new QDialog(0, Qt::WindowSystemMenuHint | Qt::WindowTitleHint); d->exec(); If you add the Qt::WindowContextHelpButtonHint flag you will get the help button back. resizeEvent taken from open source projects. So far we've created a window and added a simple push button widget to it, but Nov 15, 2013 · dialog->setLayout (layout); dialog->setSizePolicy (QSizePolicy::Fixed, QSizePolicy::Fixed); dialog->setFixedSize (some_size); @. In your $ (window). See also QWidget::resize () and QWidget::setGeometry (). If this dialog is shown with exec(), also causes the local event loop to finish In Qt, QMainWindow and the various subclasses of QDialog are the most common window types. Reimplements: QDialog::done(int r). See also QDialog::done(). May 15, 2011 · Constructs a resize event with the new and old widget sizes, size and oldSize respectively. A dialog is always a top-level widget, but if it has a parent, its default location is centered on top of the parent My problem was a little different in that I had a top-level QWidget (instead of a QDialog or a QMainWindow) that had children within a layout. There is a QWidget with a button, which brings up a QDialog on click. #-*- coding:utf-8 -*-. For custom widgets the simplest way probably is to use QSizeGrip. setOverrideCursor(QtGui. Sorted by: 1. I already tried the following options (XML_Editor is a QDialog instance): XML_Editor. If it does require word wrap, it will not go over your set size. In your case, you would need to create a class that derives from QMainWindow and reimplement the resizeEvent function. oldSize ¶ Return type: PySide2. 目的. resize(mainWindow Aug 23, 2020 · app = QApplication(sys. Every time the button is clicked, the dialog comes up with a specific size. w. QDialog::resizeEvent( event ); // Check the size of dialog at this point. from time import sleep. 1 Answer. Stately differently, the size of the parent does not stretch to accommodate the size of the child. Apr 15, 2020 · In my QDialog constructor (which is triggered when a button is pressed) I set the backdrop image to what the . t. 8 docs. Closes the dialog and sets its result code to result. The problem is to resize the height of the QDialog to match the new size of the table. May 13, 2015 · I think you need to subclass QDialog and override the virtual void resizeEvent ( QResizeEvent* event ) function. This will cause the window to close: The close event cannot be ignored. In the event model, there are three participants. Detailed Description #. That's ok. void MyDialog::showEvent (QEvent* event) {. e width and height. Mar 18, 2021 · That depends, as there are different ways of "closing" a QDialog: when the user accepts/rejects the dialog by pressing a button like Ok or Cancel, or pressing the Esc key, or tries to close by clicking on the X button of the window. 1. An event object (event) is an object that encapsulates a state change in the event source. QDialogs can also have a QSizeGrip in their lower-right corner, using setSizeGripEnabled () . 下面是一个示例代码：. setWindowFlag (flags | Qt. In PyQt4 the text method of QLineEdit returns a QString but in PyQt5 it returns a str to maintain compatibility with python, so if you want to verify if a string is empty you must use the traditional methods of python. the dialog has many widgets including Qbuttons, QLabel, QGraphicsView, etc. the entire widget. render(pixmap) If sourceRegion is a null region, this function will use rect () as the region, i. } @. setParent(MainWindow) self. sys. this is my test program: import sys. In applications, windows provide the screen space upon which the user interface is built. Jun 9, 2020 · 1. resize(200, 200) self. Oct 10, 2012 · 44. minimumSizeHint()): see above; I also read in this thread, that before doing the mainWindow resize I the event loop needs to be run to recalculate the new sizes, so I inserted QCoreApplication::processEvents to do so, without any visible effect. So once you get the size you can emit a signal to the dialog to resize itself. It is still possible to set onresize attributes or use addEventListener () to set a handler on any element. Jul 20, 2012 · I have a dialog inherits QDialog. exec () in a thread,but it work bad when mainwindow (mean main thread) handling a event,i want know how to deal with this problem. When I call the function in the constructor the function (a dialog actually) get's called before the window is shown. from functools import partial. event source; event object; event target; An event source is a change in the state of an object that generates an event. Feb 18, 2015 · 1 Answer. Note that QDialog (and any other widget that has type Qt::Dialog) uses the parent widget slightly differently from other classes in Qt. Namespace/Package Name: PyQt5. verticalHeader(). Call QMainWindow::show () and then QMetaObject::invokeMethod () and do whatever you also want to do. somethingWentTerriblyWrong = True. QDialogs can provide a return value , and they can have default buttons . The widget is the atom of the user interface: it receives mouse, keyboard and other events from the window system, and paints a representation of itself on the screen. I want the user to be able to maximize the dialog. There are a couple of properties I can set, for example: I created a dialog successfully with resize enable but for my project I need the height and width of the open dialog after it is resized by a user. Ensure that you call QPainter::end () for the target device’s active painter (if any) before rendering. 设置QDialog的大小策略. true, width The main loop detects various events and sends them to the event object. The finished() signal will emit r; if r is Accepted or Rejected, the accepted() or the rejected() signals will also be emitted, respectively. 6 onward. # end function. This is the same as size(). The resize event fires when the document view (window) has been resized. Spontaneous ( QEvent::spontaneous ()) show events are sent just after the window system shows the window; they are also sent when a top-level window is redisplayed after being iconified. argv) # Create and show the form. I don't know why. yet QDialog::reject () documentation says hides. Returns the standard button enum value corresponding to the given button, or NoButton if the given button isn't a standard button. In the resizing of the QDialog you may need to disconnect or set a flags in our QTableview so as not to get the circular calling: QTable::resize->QDialog::resize->QTable::resize The next time Qt’s main event loop runs, it dispatches all posted events, with some optimization. To capture the event of the close button being pressed without deriving from QWidget and the sort, you could use an event filter. setFixedSize(dialogWidth, dialogHeight) Dialog will automatically resize to the right size, no matter how much rows or columns you have, and what is inside of tableWidget cells. For example, if you place a child widget in a parent and the parent is too small, the child widget will be clipped. Sorted by: 23. If the main window already manages toolbar then it will only move the toolbar to area. 使得Qt界面的控件随窗口的变化而变化. myDialog = MyDialog(self) # set that something went wrong in the dialog so it should close immediately in the showEvent. Or define a signal and emit from here. Sep 11, 2012 · I have a QDialog object. r. This is the same as QWidget::size (). Now I don't want any of the child widgets to deal with it, but let the main dialog do. QMessageBox::StandardButton QMessageBox:: standardButton (QAbstractButton *button) const. There is a resize event. This is the same as QWidget::size(). What I'm not trying to do is to resize automatically the layout of the dialog depending on how many widgets are visible in the UI. Syntax : self. A dialog window is a top-level window mostly used for short-term tasks and brief communications with the user. from PyQt4 import QtCore, QtGui. Custom dialogs can be easily created by composing regular widgets into a QDialog. Nov 17, 2014 · Even after I reimplement event, Forbidden cursor still is locked on. Jun 27, 2010 · Escape Key. They can be used to provide warnings and information, or to request input and settings. def setupUi(self, MainWindow): MainWindow. [signal] void QInputDialog:: doubleValueChanged (double value) Dec 27, 2021 · dialogs qdialog qt pyside pyside6 foundation python qt6 pyside6-foundation. Action performed : It set the fixed size of window. Nov 10, 2021 · dialogs qdialog qt pyqt pyqt6 foundation python qt6 pyqt6-foundation. If this dialog is shown with exec(), done() also causes the local event loop to finish, and exec() to return r. Returns the old size of the widget. Setting QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling) in your application source code allows automatic high-DPI scaling. void MyDialog::resizeEvent( QResizeEvent* event ) {. I had tried this before too but didn't use it because I couldn't find a way to keep the "main" Widget size when adding/removing a widget to it. Windows separate applications visually from each other and usually provide a window decoration that allows you to resize and position the applications according to Dec 9, 2013 · High DPI support is enabled from Qt 5. In the resizing of the QDialog you may need to disconnect or set a flags in our QTableview so as not to get the circular calling: QTable::resize->QDialog::resize->QTable::resize Jan 21, 2013 · QVBoxLayout *layout = new QVBoxLayout (parent); layout->addWidget (widget1); layout->addWidget (widget2); layout->addWidget (widget3); this->setLayout (layout); but if want to change QLabel's font, this is done by resizeEvent in QMainWindow, so for any change in size of MainWindow, resizeEvent triggered, so you use this code: The mouse move event is passed in the event parameter. [override virtual protected] void QSizeGrip:: mousePressEvent (QMouseEvent *event) Reimplements: QWidget::mousePressEvent(QMouseEvent *event). Jan 5, 2023 · While making a window, we get options like going full screen and using cursor to change its size. Method/Function: resize. The QWidget class is the base class of all user interface objects. They also can provide the user with important information, or require them to make a decision (or multiple decisions). the parent anymore Can't you just listen to the resize event? If you just need to center it on the screen, do this in the showEvent () handler: @. If this dialog is shown with exec(), done() causes the local event loop to finish, and exec() to return result. The finished() signal will emit r; if r is QDialog::Accepted or QDialog::Rejected, the accepted() or the rejected() signals will also be emitted, respectively. size ¶ Return type: PySide2. globalX-self. size()) Although I don't like the way to access the elements since it can generate errors, instead I have rewritten your solution as follows: import sys. from threading import Thread. horizontalHeader(). The same applies to paint events: QWidget::update() calls postEvent(), which eliminates flickering and increases speed by avoiding multiple repaints. If the user presses the Esc key in a dialog, QDialog::reject () will be called. QDialog. Aug 15, 2013 · Good news, you can override and ignore, so that when the user sends the event, you can ignore or put a message or something. May 14, 2006 · Posting Permissions. By voting up you can indicate which examples are most useful and appropriate. Many widgets such as button can process SPACE key pressing event when they get focus. QMouseEvent events are created for each and every mouse movement and button click on a widget. The adjustSize will resize it to fit the contents. QtWidgets. setGeometry(400, 400, 400, 275) # declare a button. Though the event filter is advanced and not necessary to try this approach. The example is basically showing how to use QLayout::setSizeConstraint to replace the old Qt3 QDialog::setResizeMode () functionality. Here are the examples of the python api PyQt5. clickY = event. Mar 6, 2022 · Thank you Rahul. resize(MainWindow. Jan 16, 2019 · If your text is shorter and does not require word wrap - the window will shrink to fit it. So after some widgets are hidden and some other are shown, just process the event loop for some iterations and then resize to minimum. void setGeometry(QDialog *dialogBox, int PercentageOfScreen) {. May 23, 2017 · resize(minimumSizeHint()); This will shrink the window to minimum size. The event handler QWidget::resizeEvent () receives resize events. PySide2. QtWidgets import QApplication, QMainWindow. These are the top rated real world Python examples of PyQt5. In QtDesigner, once all your children are placed on your QDialog, then click on the Adjust Size button next layout ones. Note that QDialog (and any other widget that has type \c Qt::Dialog) uses the parent widget slightly differently from other classes in Qt. Every widget is rectangular, and they are sorted in a Z-order. QDialog): def __init__(self, parent=None): Jun 6, 2020 · self. int x, y, w, h; Jun 19, 2019 · 1 Answer. QResizeEvent:: QResizeEvent (const QSize & size, const QSize & oldSize) Apr 21, 2020 · Resize QDialog as MainWindow resizes. Windows separate applications visually from each other and usually provide a window decoration that allows the user to resize and position the applications according Jan 6, 2016 · 1. The QDialog's reject() slot is called when the user clicks the Cancel button. The next time Qt's main event loop runs, it dispatches all posted events, with some optimization. Also, take a look at this question, How do I catch a pyqt closeEvent and minimize the dialog instead of exiting? Which uses this: class MyDialog(QtGui. h". For example, if there are several resize events, they are compressed into one. The mouse move event is passed in the event parameter. 2 on kubuntu dapper. Resize events are sent to widgets that have been resized. The following event handlers are available for handling mouse events: Jan 16, 2013 · 1. ConfirmDialog::ConfirmDialog(const QString& message, QWidget* parent) : QDialog(parent) {. setModal(true); setAttribute(Qt::WA_TranslucentBackground); Qt::WindowFlags flags = windowFlags(); setWindowFlags(flags | Qt::WindowStaysOnTopHint); These are the first lines of the child constructor, which deal with setting the flags and attributes. In order to perform custom handling of the event, you'll need to create your own resize event handler. def initUi(self): # set default form size and location. In the resizing of the QDialog you may need to disconnect or set a flags in our QTableview so as not to get the circular calling: QTable::resize->QDialog::resize->QTable::resize . Jun 26, 2016 · Adding the QWidget to the QLayout does not change the size of W. self. Automatic solution: Use layouts and set size policies to QSizePolicy::Expanding. c++ #include #include #include #include class ConfirmationDialog : public QDialog Dec 15, 2021 · Signals (and slots) allow you to connect disparate parts of your application together, making changes in one component trigger behavior in another. 在PyQt中，通过设置QSizePolicy可以实现对话框的自动调整大小。QSizePolicy是一个控制控件如何扩展和收缩的策略类，它定义了控件在布局中的尺寸需求。首先，我们需要通过QDialog的setSizePolicy方法将需要的策略应用到对话框上。下面是一个示例： Oct 24, 2018 · I have a Qdialog with a horizontal layout and a couple of elements. class myDialog(QtGui. In above code I check if the Dialog open or not and close the dialog if its open and after the else condition it return false. QtGui. e closeEvent () is not called, which I have confirmed to be the case. QSize. Dialog. Dec 2, 2021 · A Computer Science portal for geeks. The mouse press event is passed in the event parameter. You see this all the time. A widget is clipped by its parent and by the widgets in front of it. Calling QDialog::reject () hides the dialog instead closing it. Returns the new size of the widget. clickY) Proposed solution moves Window, but mouse cursor jumps to 0,0 of Window. Nov 5, 2009 · 3 Answers. I think resize () is ok if you know a fixed size you want to expand to, but this method allows the QLayout to determine the new size Aug 18, 2020 · The following screencast shows how we can use Qt Designer to create custom dialogs using the different (default) dialog templates: To create a dialog using a Qt Designer's template, we just need to select the desired template from the New Form dialog and then click on the Create button or hit Alt+R on our keyboard. Explanation: Aug 2, 2023 · To make it perfect you would need to register a event filter to the parent widget to catch all resize events and resize the transparent widget accordingly. There are two kinds of show events: show events caused by the window system (spontaneous), and internal show events. 1. Member Function Documentation. exit(app. One of the main events which widgets receive is the QMouseEvent. ew kw gm mv ot va eb da tk gy