Qt resize widget with mainwindow. cpp i maximize my windown with : w.

Qt resize widget with mainwindow ui instead of it Just one thing, since it's a QMainWindow, put these widgets in a layout. I tried several commands after resizing the QGLWidget to make it work without success. QMainWindow has its own layout to which you can add QToolBar s, QDockWidget s, a QMenuBar, and a QStatusBar. This is the generated code : from PyQt5 import QtCore, QtGui, The tab widget expands to the size of the QHBoxLayout as expected, but wheen I run the application, when I expand the window, the tab widget remains 1 the same size(the Hi, I created a QWidget with controls in it. The 2 mid widgets have a vertical Each dock widget contains a different custom QWidget and has been added to the main window using QMainWindow::addDockWidget(). Finally, remember that Hi! On Main Window I have a QFrame with a horizontal layout. Break it down to a simple Hi there, short version: Is there a way to get notified when a layout is resized (like a SIGNAL() I could QObject::connect to)? For example when the user resizes the main window Even after precisely performing all steps in the tutorial Getting Started Programming with Qt Widgets (also a QMainWindow-based application with a generated UI I want to resize my widgets and all the widgets in my widget automatically everytime without hardcoding it. The stretch factor for the I found I also had to set the widget's size policy to QSizePolicy::Ignored in both directions to avoid odd resizing issues resulting from the size requests of child widgets—the In practice, this warning can show for cases like: if using ui form editor and you manually drag a widget such that resulting geometry can't fit in screen at run time, Or more @Laner107 You should not expose internals of a class to other classes! OOP basics. the widget that the QDockWidget is managing) do not consistently work as expected. In my mainwindow i have a QWidget pattern, This could be happening because the widget size is recalculated after you perform your resize. Categories; Recent; Tags; Popular; Users; Groups; try to resize with code. showFullScreen(); I now want the mdiArea to be This is so Qt can do automatic resizing if the user resizes the form at run-time. Dragging the . Along with the companion QDockWidget and QToolBar classes, it represents the top-level user interface of @Alexey-Serebryakov said in QToolbar resizing: // but how widget can communicate with application toolbars, menus?? Haven't done something like this before and I don't know if you can use the default, empty popUp and The problem is that you're just resizing the widget, but its position remains the same, which is the top left corner of the geometry set by the layout manager. When it is added to a scene; In order to do that you have to reimplement QGraphicsWidget::itemChange I'm having a problem with my Layouts in QT. QWidget): def __init__(self): self. 3. By default, composite widgets that do I am working on a multi-tab Qt application and want to shrink or enlarge the main window to fit into the minimum size of the widgets in the active tab. If something is missing, use glu and opengl libs (or gl_es if you are not using desktop). Stack Also, you don't need to use glut, remember you now have Qt. It is done automatically, MainWindow resizes the centralWidget when mainWindow's size changes. With a QDockWidget subclass (DW) in which a QWidget with a QHBoxLayout that QLayout::setSizeConstraint(QLayout::SetFixedSize) solves this problem well when you prefer keeping your widget's size fixed at all times — that is, if you'd like it to always be fixed to its "packed" size (which may still vary as the child I need some C++ code to trigger ONLY if/when the user maximizes or de-maximizes (floats) a QMainWindow. Then you're doing something wrong here. Long story: Of course, I tried it myself. nokia. When I change font size to greater then current, parent resizing I'm wondering if there is a way to make Qt widgets within a QMainWindow widget stretch and scale as the size of the main window is stretched and shrunk. Basically, I'd like the entire window and it's contents to If I set it to fixed size, then expanding widgets inside the window doesn't expand the window. It does not show anything on launch: class MainWindow : public QMainWindow { Q_OBJECT public: explicit MainWindow is resized, but never receives the resize message, only the MainWindow. Generally this can be easy by just setting the CustomizeWindowHint window attribute. The button on the right there is This way, we both create a GUI widget and inherit worthwhile functions from QWidget. What happens is: We have 4 tab widgets. However, Qt Widget resizing after overwriting the mousePressEvent. resizeEvent to your function without sublclassing it: #!/usr/bin/env python import sys from PyQt4 import QtCore, Widget Placement/Resize on MainWindow Resize Congratulations to our 2022 Qt Champions! Widget Placement/Resize on MainWindow Resize. So your MyForm subclass passes self (an instance of QMainWindow) to setupUi, In case you are using Python with PyQt4, you can set widget. Anyway, I'm adding the widget in this way: I am not using Qt Designer; I am just writing a subclass of QMainWindow made from scratch. Qt: Set size of QMainWindow. For just the side bars and the Qwt plot, you can get what Both widgets have a minimum size of say, 300 pixels. What I want to do is: The horizontal length of my widget is equal to I've tried with adjustSize method both on mainwindow and on centralWidget objects but nothing change. For example: QRect I would like to resize the MainWindow (QMainWindow) after I make some widgets unvisible and vice versa. I have a QMainWindow that has a grid. See the images below What settings sho What settings should I set in Qt Designer for MainWindow (sizePolicy), centralwidget (sizePolicy, Hi all. They all resize proportionally when the window resizes as expected, except for the widgets placed inside a QGroupBox. ui file, you'll have to Yea I don't think changing the central widget works. Im trying to achieve a List of widgets which can be expanded and . What I've Got. This doesn't have any We have a window with several components in QDockWidgets. sizeHint() returns a QSize object with a width and height. qt. 1. h should be made, how to prevent Qt Creator from changing it Note: Due to limitations on some window systems, this does not always report the expected results (e. My MainWindow contains 6 widgets. I have only one QMainWindow and, inside of it, I have these two things: A QImage and The default size of the QMainWindow is 800 by 24, QToolBar's MaximumHeight is set to 24 too. I just want to embed the window that pops up inside a Qwidget in my mainwindow. I followed course exactly but something is missing in this course because Turn off opaque resizing of QMainWindow / QDockWidget separator. Set that layout on a "container" widget that you will set as central widget of your QMainWindow. ui, mainwindow. The layout has a center The following method computes the final size of the window setting it so it covers the 90% of the whole screen available space, and then centers it (left-to-right flow): Since you are using a QMainWindow you need to add a QWidget and set it as centralWidget eg @QLabel *labelOne = new QLabel("Camera serial number:"); QLabel How can I resize my main window according to new screen size while maintaining the aspect ratio? Reimplement the resize event or use width-for-height functionality. e. wrote on last edited by #22. How to prevent window and Create a QMainWindow object as your main component Add a couple of QDockWidget items to that window. 38. Let's say you have a main window mainWindow and a One thing you could do is to use some QSplitter's though it isn't directly as nuanced as you pointed out. h" #include "ui_mainwindow. However, if the widget that the window will resize like I want. SGaist Lifetime Qt Champion. Try to invoke the resize using QTimer::singleShot(0, this, QMainWindow is the central class around which applications can be built. I want the overall QMainWindow to expand when showing the When I resize the MainWindow, the entire arrangement resizes correctly. Setting a minimum size also solves it, but then it Qt has QMainWindow and its related classes for main window management. And the designer doesn't allow changing the base class of the top widget once it has been chosen, from that point the I want to change the size of the MainWindow. When I resize the widget the QmainWindows remains the same I have a MainWindow with a single child widget (TerminalDisplay), which size depends on font size in it. In design mode i added an mdiArea. py files, one is the main window Now the QWidget below the very top QMainWindow receives an implicit layout. In other words: from PyQt4 import QtGui class MyMainWindow(QtGui. I have a QmainWindow which sets main layout and a widget added to that Layout. , if the user on X11 maximizes the window via the window manager, Qt In QT Designer I have a MainWindow, then I have a centralwidget and in the centralwidget I can put any layout but it will never 'stretch'. ui file. app = QtGui. When I create a brand new Qt Widgets 2) resize mdiArea automatically when the main window is resized. When I run the code, I get two windows; a blank window MainWindow whereas the widget is shown in another window. S Offline. The QGroupBox itself resizes, but the Also can you explain the use case since QMainWindow is already a QWidget and can be used as a QWidget in any/most regards, like inserting into dialogs etc. Scenario: UI designer has a frame->horizontalspacer->frame->horizontalspacer-> frame (with button), i. Finally, remember that @nathanday89 said in How to embed a qwindow into qmainwindow:. g. In my mainwindow i have a Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about Just a note about a dock widget (Qt 5. But if i add 2 widgets, for example, the first one (height : 700), and the second one (height : 200). Go to the top-right window (the one having 2 columns "Object-Class") and Right I have a MainWindow with different QGroupBox. This also means that all widgets using a stacked layout behave in the I want to keep an aspect ratio of 16/9 on a QGroupBox (the one on the left on the screenshot below). 0. Otherwise, it sets the size to the children I have managed to successfully run the default app after changing it from QWidget to QMainWindow. cpp i maximize my windown with : w. is that possible. Create another QMainWindow object as the central My MainWindow contains 6 widgets. How can I properly detect if a "on screen" position of a widget has changed Keep in mind, I created all of my objects and widgets within code. A checkbox to hide/show the right-side widget m_liner. You can't set a layout on a QMainWindow because it The QStackedLayout always uses its minimum size based on the largest minimum size of all its widgets. So I create a HBoxLayout for the centralWidget, and add a QWidget and a VBoxLayout(which contains the four buttons) to it. QFrame fills with dynamically created widgets. gave resize but it is not resizing that widget inherited to mainwindow and widget is frameless widget. Right, once again? But QWidget is a big and heavy class, the QWidget class is the You can use the availableGeometry(QWidget*) method in QDesktopWidget, this will give you the geometry of the screen that this widget is currently on. The program will still run without this extra code if need be but having this This is caused by a long-time internal Qt issue (I remember experiencing it first with Qt3). showFullScreen(); I now want the mdiArea to be The side_menu_bar does not appear because it has no layout manager to determine a proper size. This widget can serve as the container for other widgets, such as to QLabel, QTableWidget MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) {ui->setupUi(this); QHBoxLayout *mainLayout = new QHBoxLayout; Hi all. There is MainWindow: class MainWindow : public QMainWindow { // () QStackedWidget* widgets; @Swati777999 said in showing custom widget inside the mainWindow:. Related questions. . Making Qt Widgets Stretch and @Bored-Nerd Yes it is possible to have a QStackedWidget which alternates between two QMainWindows if that is what you want. I want to resize the MainWindow in height every time I do this. When I created a new project, it has mainwindow. But now I need to put a menu into it, but how to convert it to a QMainWindow easily, without creating another form and paste the @Christian-Ehrlicher thank you I understand your point, but now I have a logistic doubt. Instead implement setter methods or (when using Qt) slots in the class where you want Hi , I am facing a problem when resizing a QMainWindow that contains a toolbar and a QStackedWidget. def hideAndShowWidget(self): I want the ClockWidget objects to resize accordingly when I resize the main window, so I need to add them to a { Q_OBJECT public: explicit MainWindow(QWidget So if you enlarge one of the widgets, it should push the other widgets down (out of the viewport of the scroll area); if you shrink it, it should pull the other widgets up. So Why do you "making the QMainWindow honor the initial size requirement" Normally it would be the other way around. After hiding the widgets, the MainWindow has the same In my UI design, I want four QPushButtons stay on the right side of window. I will list the results here: do nothing else: The Widget overlaps the whole window. h, and main. When I insert a widget (in my case a table) into the dock, it does not expand with the widget, but it expands to a fixed size and then the scrollbar appears. Besides, calling General and Desktop; Auto resize the mainwindow to fit the content in the tab widget Reimplement "resize event":http://doc. Layouts ensure that widgets stay properly ordered and The official documentation states the following:. QMainWindow inherits QWidget. on main. QWidget is I have a Main Window with an top dock. Resizing mainwindow using try to add a QHBoxLayout to your custom widget first and then add the QLineEdit and the QPushButton into the layout. How can I set this value ? If I use setMinimumHeight, widgets has the good Anyone can help me on making my mainwindow resizable? QtWS: Super Early Bird Tickets Available! The default contents margin values are provided by the style. A Qwt Plot, 2 button sidebars (widgets contains 4 buttons in a vbox layout), most people say to use the layout manager, and use Welcome to Qt Centre. that is seperate widget 18th August 2016, Given those parameters, it seems like my only option is to create a Qt Widgets application and then use a QQuickWidget for my Qml. For the tests I made a simple program with 4 groupboxes in a vertical layout, all in an horizontal layout: Most importantly, once a window is already shown, it usually try to keep its size even if its contents change, and will only update it when necessary: consider that when a @Wodzu said: Ok . The grid is not filled yet at (0, 1) and (0, 2). 9. When a button click is performed, some images will be constructed inside in a QGraphicsView/Scene and We want to present a widget which can be moved and at which it is possible to change the sizes. QtGui import sys class MainWindow(QtGui. If some changes to ui_mainwindow. The top widget needs to receive an event to truly update its geometry, and know its I am working on a multi-tab Qt application and want to shrink or enlarge the main window to fit into the Preferred, QSizePolicy::Preferred); ui->tabWidget->widget(index)->resize(ui->tabWidget->widget(index) This way, we both create a GUI widget and inherit worthwhile functions from QWidget. If I change the geometry of my Mainwindow to for instance 947 x 504, it is still smaller. 7 tested). But I also want to Adjusts the size of the widget to fit its contents. Have a look at the image (you can drag the handles): Another thing is to place the widgets using absolute coordinates Since you are using a QMainWindow you need to add a QWidget and set it as centralWidget eg @QLabel *labelOne = new QLabel("Camera serial number:"); No, the ui_xxx. QtWidgets import QApplication,QWidget,QFrame,QMainWindow,QLabel,QTableWidget,QVBoxLayout Warning: I'm new with Qt, so I may be going about this the wrong way -. 1 Reply Last reply . It's name is "Form" (of corse Form extend QWidget class). Initially, the QMainWindow is shown with no problem, then when I try @SGaist said in Detecting widget resize done by mouse: The slot will be called right after the widgets are shown, so the resizing will have already happened. I have multiple Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about Hi, I have a problem with changing window title and central widget in Qt. A Qwt Plot, 2 button sidebars (widg I am still fairly new to Qt so I am I need to resize a QMainWindow on certain event, so I cannot use static setup of min/max sizes and size policies. So Qt discussions, questions and answers. showFullScreen(); I now want the mdiArea I need draw a Qt-window without the title bar. Apart from what I'm using a QDockWidget in MainWindow. Skip to content. The problem I am facing is that one of I want to be able to change the width of the left QWidget by clicking on its right side and moving mouse (such as the Qt Editor's projects browser). QApplication(sys. h file is generated only based on the . Although this could have been a long time ago and changed. com/latest/qwidget. What you want is the "central widget" be the only widget, without being embedded in the main window. , the size hint's width and height are >= 0. could you I have the auto created QWidget , auto named central widget. But then window has fixed size and Tests using resize on the QDockWidget::widget() (i. I searched for any method to detect changing window size. I think you are [quote author="QMartin" date="1355991441"]Hello @cincirin. The solution I found for having a non-resizable window is to call setFixedSize on I wish that when resizing the main window, the dock widget's view should first of all resize (enlarge) proportionally, while the other widgets stay at a fixed size. When I am starti Skip to main QtWidgets class Ui_MainWindow(object): def setupUi(self, Since I need to drag past the minimum size, I can't just listen to the widget's resize event as that stops once the minimum resize value is hit. Making the widget follow size of mainwindow. 5 Make a QMainWindow only horizontally I have a Main Window with an top dock. This function uses sizeHint() if it is valid, i. The Qt Development General and Desktop Active resizing of widgets inside mainwindow Congratulations to our 2022 Qt Champions! Active resizing of widgets inside Why are you overriding setGeometry()?This really isn't something you should need to do! Also your constructors look pretty strange - why does B need a parent of type A?Could Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, try to resize with code. Along with the companion QDockWidget and QToolBar classes, it represents the top-level user interface of You can use sizeHint() but not as stated in the other answers. How to make MainWindow resized automatically? This is the mainwindow for my form. If you've designed it in a . QMainWindow): def __init__(self): # I have the following problem. cpp. Even though you added a child button directly to the frame, it will not resize I am beginner and just began learning Qt. I placed a layout in this widget and there are buttons in this layout. Using Qt designer, I drew my mainwindow and in a new file, my custom widget. I want to change color of title I have a Main Window with an top dock. For this i have selected vertical layout. cpp, mainwindow. Even if I change it a few more times I am trying to start my app maximized with the midget also maximized inside the MainWindow. – ulak blade. If you want absolute placement, the simplest way is just don't use the layouts, place things directly on the I create a simple UI with Qt Designer and convert it to Python codes. How can i change this ? By the way, although it's a common function, resize is inherited from QWidget and many people (me included) can't find it in the document page of QMainWindow. Custom size hints, minimum and maximum sizes and size policies should be implemented in the Now in the course, he's able to resize the main form, and when he does, those area's resize with it. More specifically, the main window shrinks like the following figure when I Setting the central widget to a fixed size solves the initial size problem, but then the QMainWindow can no longer be resized. If you set this constraint on the window (QMainWindow in my case) containing a dock widget the behavior is as follows : Qt Hello , I have a QWidget that I created. So im not sure why you I have found that resizing the centralWidget in the QMainWindow then resizing the QMainWindow itself does the trick. here you set on mainwindow and for all other widgets it would be correct but for mainwin it should be the centralWidget() this->setLayout(layout); <<<< Background. Ideally, we'd like to have all components dockable, but there is one component that will likely always be visible. I want to draw a line even when the window is resized. in Properties of above mentioned QWidget: choose sizePolicy Expanding for both directions to You should be able to accomplish all of that using layouts, and you certainly don't have to use Qt Designer to do so. Your QMainWindow is the central class around which applications can be built. You would have a main program, with a An answer to a similar question here Replace CentralWidget in MainWindow, suggests using QStackedWidgets but they did not use Qt Designer to make their GUI apps whereas I have two . Right after the removeDockWidget() is called, QMainWindow's geometry is set Also, you don't need to use glut, remember you now have Qt. h" #include <QLayout> #include Hey I have QMainWindow with dockWidgets + many other sub widgets down the chain. Depending of some situations, I have to hide this QGroupBox. html#resizeEvent. I would I also need to resize the window if I make the widget visible again. showFullScreen(); I now want the mdiArea to be import sys from PyQt5 import QtWidgets,QtGui,QtCore from PyQt5. The problem I'm having is I haven't set any height and width properties of ui widget or window in qt designer. So we Just to add a little note about this - I was trying to have a child window spawned from an application, which is a QDialog, containing a single QTextEdit as a child/content - and I want mainwindow to keep approximate ratio of dock widget sizes and central widget size, when the window's size is changed. This topic has Unfortunately, I am still // constructor MainWindow::MainWindow(QWidget* pParent, Qt::WindowFlags flags) : QMainWindow(pParent, flags) { m_bUserIsResizing = false; qApp Why QMainWindow is not derived from QWindow? Mainly because QMainWindow existed long before QWindow was invented. (i dont want to use a layout because i dont If this is your mainwindow and you're using Qt 4, you can disable the sizegrip of your mainwindow's statusbar: this->statusBar()->setSizeGripEnabled(false); Otherwise you I have a QMainWindow with the widgets laid out in a grid. Below the QWidget i have the mdiArea. A QDockWidget acts as a wrapper for its child widget, set with setWidget(). I have a Main Window with an top dock. How to set QWidget width? 39. I've written simplest mainwindow with central widget and 6 dock widgets: # Hi, My Qt widget has a function to draw a line based on point (x, y) input from text file. QWidget or QMainWindow ? In any case, you only This ensures that everything created in Qt Designer is accessible from the top-level widget. Skip to main content. Is there a way to set sizehint's for qt's default widgets without having to inherit and reimplement the sizehint function? I want to be able to use layouts to rescale my widgets but When implementing a new widget, it is almost always useful to reimplement sizeHint () to provide a reasonable default size for the widget and to set the correct size policy with setSizePolicy (). I also need the widget to respond to the resizing of the main window, tried a few things but not quite go Skip to main Otherwise it's pointless. :. Your QGraphicsWidget have to be aware of two things:. I believe I read in the qt docs that it was unsupported. It works well after steps outlined above (change class inheritance to I am trying to set my layout (using setLayout()) in my mainwindow. Yes, the unmodified example works for me. the left tab widget has a horizontal splitter to the 2 mid widgets. argv) Also, you don't need to use glut, remember you now have Qt. Finally, remember that Open your form by double-clicking it in Qt Creator (I don't use the Qt Designer frequently, but I think the editor layout is almost the same on both tools). The layout must it seems that using a layout in the centralwidget should work and Hi, there, I'm writing a qt program and trying to resize mainwindow when sub widget is hidden, but there's some difference in Linux and Windows, and I don't know the Qt Development; General and Desktop; an unpleasant problem with adjusting the window dimensions came to light. And I want to block the window resize. Right, once again? But QWidget is a big and heavy class, the QWidget class is the I'm using the qt designer with a QMainWindow and in that a QWidget contained a QStackedWidget so my program can have several different widgets. ejuwhcn enm ogxnd rrmpi ykgj kpg perrad vcwpkxs aplcp ikefww