Qt fullscreen widget According to this article a window should be able to hide the taskbar, i. Only users with topic management privileges can see it. QMainWindow centralWidget border. Then I tried to do the full May 11, 2015 · "For an application, the screen where the main widget resides is the primary screen. It expands the widget to fill the entire screen, excluding the system taskbar or menu bar (depending on the platform). It also hides the lower controls (sliders and buttons) in full screen mode like a media player would (just delete line 55 to prevent this): 本文还有配套的精品资源，点击获取 简介：在QT开发中，创建全屏且能适应不同分辨率的UI程序是一项常见需求。本解决方案通过核心知识点，如QT框架、Qt Widgets、QLayout管理器、全屏模式、自适应设计、事件过滤器、信号与槽、DPI感知等，允许开发者无需为特定分辨率设计特殊布局，实现UI在全屏 Apr 14, 2014 · I use Qt 5. 0. 1. Use {Esc} to return to the layout. Thats more easy just set the following for your widget Sep 1, 2017 · The windows goes full screen all right. Jan 17, 2013 · bq. 3k Views Jul 26, 2021 · screen widget screen widgets for windows 10 Qt-fullscreen-widget Download If the widget exceeds the size of the fr 在PY QT 5中 QscrollArea (滚动 条)的使用 and maximized/fullscreen state, while QWidget::restoreGeometry() restores it. I saw some styling options that the Qt framework has and its great, but now I need to build my application that its main windows (form) it designed/skinned with image without the rectangle borders (borderless?). But I can't get it back into its widget when exiting from the full screen. Could somebody give me some advices? Thanks! Jan 17, 2013 · bq. I have to fix the problem of maximizing the window to full screen when the user clicks on "Maximize" button on menu bar. Problems: If i do MainWindow. Access functions: May 23, 2017 · One way of doing it in Qt5 is to use QWindow::setScreen to set the screen on which the window should be shown. myWindow->setWindowState(Qt::WindowNoState); myWindow->setParent(p);//where p is cached pointer to parent: myWindow->parent() myWindow->showNormal(); The window stays detached from the main window. Qt. 2. Feb 2, 2016 · What is the best way to make a child widget (video widget) fullscreen? I have a video widget (from VLC-Qt) as a child widget in my application. Mar 6, 2016 · It is possile show central widget of QMainWindow at fullscreen? (only central widget) This code create an exception setCentralWidget(ui->widget); ui->wid Sep 9, 2012 · In addition, it the widget is part of a layout inside a mainWindow or so, you should use the layouts method: "index = indexOf(this)" and when escaping the fullscreen mode, you can add the widget again to the mainWindow by calling the containing layouts method: "insertWidget(this, index)". QML has automatic GPU rendering, allowing you to do fancy things easily, whilst Widgets run on CPU only. 8 I own , but failed in Qt 5. Purpose. May 11, 2016 · window->setFlags( (window->flags() & ~Qt::WindowTitleHint) | Qt::FramelessWindowHint ); This should simulate the apparence of a "full screen" window. Jul 26, 2019 · Qt::Widget：这是QWidget的默认类型。 如果它们有父级，这种类型的部件是子部件，如果没有父控件，则为独立窗口。 Qt::Window：表示小部件是一个窗口，无论窗口小部件是否具有父控件，通常具有窗口系统框架和标题栏。. But now the event filter on the MainApplication won't receive QEvents anymore because (I guess) the mainwindow isn't on top. In Qt, the QWidget::showFullScreen() member function is the primary way to enter fullscreen mode for a widget. In Qt 4, it seems (I can't find explicit documentation on how to do this) like the 'correct' way to go about this is by creating N QMainWindow's for the N monitors on the machine, calling QWidget::move() to the N monitor's top-left x,y coordinates, and then calling QWidget::setWindowState(Qt Mar 16, 2017 · Widget with showFullScreen() doesn't fill the whole screen Scheduled Pinned Locked Moved Unsolved General and Desktop 5 Posts 3 Posters 1. Aug 24, 2020 · @GunkutA said in Cannot make widget full screen:. report. I have 3 screens, and when the widget is on the "main" screen (the one with the Windows toolbar), each time I click outside then inside the widget, there is a flicker on all screens. 2. I get full screen for qt widgets application with code: @QApplication a(argc, argv); Widget w; w. show(); But I don't understand how to adapt the size of Qt design to the same size as a 1920x1080 screen, I tried several things in geometry but it doesn't work. Apr 24, 2006 · Welcome to Qt Centre. Qt actively develops QML, widgets are no longer being developed. I wanted to fix it within "mainwindow. Use double click to reveal the element on the full screen. 83 with Mac OSX 10. the top bar of Ubuntu's Unity desktop. This property holds whether the widget is shown in full screen mode. I can detach the child widget by setting the parent to nullptr and calling showFullScreen() on the widget to Aug 31, 2013 · Qt Centre is a community site devoted to programming in C++ using the Qt framework. 9. " I assume primaryScreen changes its value depending on where your main window is moved. May 7, 2015 · 我有一个Windows & Mac程序，可以在多个显示器上切换到全屏模式。在Qt 4中，似乎(我找不到关于如何做到这一点的明确文档)的正确方法是，为机器上的N个监视器创建N个QMainWindow，调用QWidget::move()到N监视器的左上角x，y坐标，然后调用QWidget::setWindowState(Qt::WindowFullScreen)。 Jan 2, 2018 · The post you mentioned didn't help much as the guy wanted to put the parent class in fullscreen when the black widget is double clicked, in my case I want to put the black window in fullscreen, not the parent. showFullScreen(); w. A widget in full screen mode occupies the whole screen area and does not display window decorations, such as a title bar. comments. This is my code. widget->setWindowFlags(Qt::WindowStaysOnTopHint | Qt::FramelessWindowHint); and after that call widget->showFullScreen(); as Exa said. ui->stackedWidget->setCurrentWidget(ui->stackedWidgetPag Jul 16, 2023 · 文章目录一、概述二、效果展示三、demo制作1、设计窗体2、双击放大四、拖拽五、相关文章 原文链接：Markdown模板 一、概述 用Qt进行开发界面时，既想要实现友好的用户交互又想界面漂亮，那么自定义界面就必不可少。 Jul 16, 2023 · 文章目录一、概述二、效果展示三、demo制作1、设计窗体2、双击放大四、拖拽五、相关文章 原文链接：Markdown模板 一、概述 用Qt进行开发界面时，既想要实现友好的用户交互又想界面漂亮，那么自定义界面就必不可少。 May 8, 2015 · One way of doing it in Qt5 is to use QWindow::setScreen to set the screen on which the window should be shown. The internal widget may be bigger, smaller, or the same size as the viewport the scroll area has to display it in. qt remove window top frame Jan 15, 2017 · this->setWindowFlags(Qt::Window); to force it to a separate window. Qt also offers functions like move() to reposition the window and resize() to adjust its size. showFullScreen(); Nov 29, 2006 · Welcome to Qt Centre. 2 Qt5. In Qt, widgets normally do not generate screen flicker, but on X11 the server might erase regions on the screen when widgets get hidden before they can be replaced by other widgets. Jun 22, 2023 · I just started with QT Design, I have an instruction in my main. By default, this property is false. Oct 26, 2011 · 1- create the widget (done) 2- show widget fullscreen (done) 3- exec the widget (done) how can i proceed to keep making it on top ? My thought is: initialize a timer of let's say 10 milliseconds; signal slot when timeout to a function that set the window on top. Thats more easy just set the following for your widget Aug 28, 2020 · You forgot to add table_widget to centralwidget to do so you should use layout. May 27, 2025 · If you have a widget inside a QMainWindow (a common main window class in Qt applications) and you want that inner widget to go full screen, you typically need to temporarily make that inner widget a top-level window by setting its Qt::Window flag and then calling showFullScreen() on it. Dec 11, 2012 · I am using Qt4. e. 04), The QT application runs OK, it can display for full-screen with the QT API: showFullScreen() But, after I run the same project on imx8mq-evk, which is the same source code,compiled by cross-compile-tool-chain, I Sep 28, 2022 · The QScrollArea, your outermost widget, provides a view onto an internal widget of indeterminate size. Jun 10, 2016 · There is a problem when using a QOpenGLWidget in a full screen frameless widget. key() == qtc. Sep 28, 2018 · If I use showFullScreen in my Qt Widgets Application, I can't see the items list of all the QComboBoxes, when I click QComboBox. cpp to make my window full screen : MainWindow w; w. g. Did somebody meet this problem before. When I am not using full screen, this works fine -- the new widget opens in its own window, with border (I use the "X" on it), and it stays on top of it's parent. Jan 11, 2009 · When I set the Qt. share. If you are looking for information about Qt related issue — register and post your question. After creating your QVBoxLayout in Qt Designer, right-click on the background of your widget/dialog/window (not the QVBoxLayout, but the parent widget) and select Lay Out -> Lay Out in a Grid from the bottom of the context-menu. - Qt-Widgets/QFullScreenAdapter-Full-Screen Apr 26, 2025 · widget->setWindowFlags(Qt::Window | Qt::FramelessWindowHint); widget->show(); // Not showFullScreen() Remember to choose the alternative that best suits your application's requirements. QML allows hotreloading, while this is also possible with widgets, QML makes it so much easier. Sets the window state of a widget to one of the following modes: Qt::WindowNoState: Normal window state. I downloaded the latest windows version, did some tutorials and its great. Nov 7, 2019 · Hi I'm developing a application with QT5, on my development PC(X86,ubuntu 18. I've created the GUI so far using Qt Designer and everything is currently in a grid layout. Jan 11, 2018 · Each screen is a widget inside stacked widget including one which plays video (played using QMediaPlayer and I have called showFullScreen()). All you can get is index of screen main widget part resides on and number of screens available. 8 and windows 7. After I did some search, I found if I add a code like that QCoreApplication::setAttribute(Qt::AA_UseSoftwareOpenGL) or QCoreApplication::setAttribute(Qt::AA_UseOpenGLES) at the first of main funtion , then application works well on the version of Qt5. And i wanna show fullscreen on my computer. See also Qt::Window and Qt::SubWindow. The problem with using a QTimer is that even if you set it to 1 you can still see how the window maximizes so that it can go to fullscreen, which doesn't look that good to be Dec 6, 2012 · The following is a basic working example of what I think you're trying to do. screen widget screen widgets for windows 10 screen widgets remove Fullscreen. showFullScreen(); and it works perfectly, however when I add the QWebView and set it to centralWidget like this: May 7, 2015 · I have a Windows & Mac program that switches into full-screen mode on multiple monitors. 2025-04-26. I want to create a program that loads google in literally full screen, so I achieved opening my qt program in full screen using w. Over 90 percent of questions asked here gets answered. Disabling updates solves this. 6. Window flag, fullscreen will work. It happens if the widget is frameless AND fullscreen. Key_F block inside keyPressEvent of class Apr 24, 2013 · Wrote a small filter that fits Q[V|H]BoxLayout classes. 18. 6 8 86. QWidget::showMaximized() is a convenient way to present a widget in a full-screen mode without manually setting its size and position. Though I don't use any of that ^ and just do this->setWindowState(Qt::WindowFullScreen) inside the constructor of my MainWindow class and it starts fullscreen instantly. So can I only make windows fullscreen? You can make QWidget full-screen if it is a window (does not have parent). My system information: Windows 7, 64bit; Qt 5. Key. Making a borderless window with for Qt. But when the MainWindow is full screen, it opens behind it, where it is inaccessible. 7. 9 users can use the following: Sep 8, 2022 · I am trying to implement fullscreen and revert functions to my multimedia viewer program, following this thread (and some other similar threads), I've reached a conclusion similar to the following MRE (the actual block of code performing/reverting the fullscreen is the elif event. 98% Upvoted. QWidget has a windowHandle() that returns the pointer to the QWindow. If you need a true fullscreen experience without borders, consider showFullScreen() along with handling for exiting fullscreen (like a key press or button click). The QScrollArea does not resize the internal widget in any way, just displays some or all of it. Mar 21, 2017 · This topic has been deleted. 1 with Qt Creator recently. The widget will automatically adjust its size to fit the screen dimensions, ensuring optimal display. Qt Centre is a community site devoted to programming in C++ using the Qt framework. Experimenting on Windows for now. ; Qt QWidget::showFullScreen() is what you need - works great under Linux+Windows in my projects for years - but be careful, there shouldn't be two calls of this function (eg. e. Using his image as example: Double click: full screen, double click again: put it back where it was. Fullscreen widget. Here is information about the Layout Management. How can I do it with Qt? Feb 13, 2017 · I am sorry for knowing nothing for that . have a higher z-order. the full screen of my computer should become black (that is just like a player play video in full screen mode )then if I doubleclick again ,it should return back . ui" (rather than "ui_mainwindow. Thats more easy just set the following for your widget Widgets of this type are child widgets if they have a parent, and independent windows if they have no parent. 1 Compiler: MSVC2013 64bit. 5 on my computer. save. Jul 21, 2015 · I'm trying to make a true fullscreen window (not just maximized one). You will also have to put it back in place once you get out of fullscreen mode. showFullScreen() One of the screen has QGraphicsView, and it does not display anything I draw on it but the video plays full screen which is what I want. Adapter for any Widget embedded in a layout to toogle between FullScreen and embedded mode. 1 Qt5. NOTE : When doubleclick the black widget ,it should become in full screen mode ,i. Apr 26, 2025 · Qt Window State Control . May 20, 2014 · First you have to set corresponding window flags to make your widget modal, and also get rid of the window manager frame so it will be true fullscreen. first call of QMainWindo->showFullScreen() and then MyWidget->showFullScreen()). Mar 16, 2017 · Hi, i'm using wt5. Jan 16, 2020 · You have to remove the widget from the layout containing it and then you can make it fullscreen. 1 . hide. QML has an easy declarative syntax, whereas widgets get clunky with inheritance. Qt Creator, Full Screen View. Oct 16, 2016 · You can only make windows fullscreen, so you need to first make your widget a window: ui->video->setWindowFlags(Qt::Window); ui->video->showMaximized(); and to go back make it a widget again: ui->video->setWindowFlags(Qt::Widget); ui->video->show(); Apr 26, 2025 · If you need a true fullscreen experience without borders, consider showFullScreen() along with handling for exiting fullscreen (like a key press or button click). Yes, this likely works to get the apparence of full screen, except I do not think it will actually make the window cover e. Jun 4, 2015 · This topic has been deleted. Apr 26, 2025 · If the widget already has a layout, the layout will be managed to accommodate the maximized state. We would like to show you a description here but the site won’t allow us. Therefore, the solution is to change the flag to Qt::Window manually as follows: ui->myImage->setWindowFlag(Qt::Window); Pre Qt 5. I'm new to Qt C++. I do not think Qt can tell you which screen is considered primary. h" , only because it is generated code and all the changes made here will be lost in recompile). Apr 24, 2013 · Wrote a small filter that fits Q[V|H]BoxLayout classes. 4. Additional Considerations. You can also set the layouts in Qt Designer (Using Layouts in Qt Designer). fdqejcaf tccu krbnj abko xbqkdp mwh bbjgul zcazi zjesy ftgi