try: _fromUtf8 = QtCore. So my question is, how can I add a nice gradient to my QWidgets / QFrames without slowing down the program? Using only the designer. A background-image does not scale with the size of the widget. Apr 10, 2014 · How can I make a scaled background image using stylesheet? I tried to use: #centralWidget { background: url(:/res/background. h" MainWindow::MainWindow(QWidget *parent): QMainWindow(parent), ui(new Ui::MainWindow) Nov 30, 2021 · In this video we will learn how to display images in our application as well and work with resource (. background-color: rgb(0, 170, 0); Jul 25, 2014 · i created a qt resource file and put the image in there. - Return images to their original size. Add Label (a QLabel) to the dialog where you want to show the image. The effect produces higher quality than FastBlur, but is slower to render. In my edit style sheet, I wrote: ImageCoregistration is the name's form. – Nov 15, 2011 · The easiest way is probably to call setStylesheet(). Inside the downloaded . Qt provides four classes for handling image data: QImage, QPixmap, QBitmap and QPicture. only a blank application. - Zoom in and out ( ) - Play and pause animated GIF and MNG Feb 7, 2021 · Comment ajouter une image dans une interface graphique avec Qt Designer For python users the solution would work like this: first keep the original "setQPixmap" line. #include "mainwindow. If you choose QWidget as a base class, and you try to add an image as a background by changing the widgets style sheet (wither manually or from the design section of the IDE), The image doesn't show up when you build the project. background-image: url(:/Resources/bg4. png); I made a new . Set the size of the icon to be that of your image, or at least large enough for your image, or it will not display. you are welcome, it's a good practice. In the next two sections, you’ll learn the basics of how to use these components of the Qt Designer interface. May 20, 2013 · run qmake (or the images will not show up in the UI designer) select an icon for your button, you should get a dialog where you can choose the image that should be on that button. I have tried too many way to code it but at the end I always got a white background. 2/ Delete text in the text properties ('TextLabel' by deafult), and resize to image size wanted. Sep 30, 2014 · @RetiredNinja Please note: in qss G:/2/qt. png" added (which opens in QT if I double click it), and a label that I am trying to set the background image for. qrc file, added img. QScrollArea provides a scrolling view around another widget. jpg); } Style sheet for widget (just to see if background-color works because I assume something is not right with my resources): #widget {. background-image: url(:/background. Images can be supplied in any of the standard image formats supported by Qt, including bitmap formats such as PNG and JPEG, and vector graphics formats such as SVG. ui. May 15, 2011 · Unlike palette fiddling, style sheets offer guarantees: If you set the background color of a QPushButton to be red, you can be assured that the button will have a red background in all styles, on all platforms. png); background-repeat: no-repeat; background-position: center") Dec 10, 2015 · I have used QGraphicsView, QGraphicsScene classes in order to show a picture in a widget like this: m_Scene->addPixmap(QPixmap(fileName)); m_View->setScene(m_Scene); How I can show . qrc) files. You want to set the background-color attribute, so something like. qrc file, press Add -> Add Prefix -> change prefix name if you want. jpg picture as the back ground in the main window on qt creator , here is the code. You are absolutely right about escaping, but in qss need to use G:/2/qt. To provide a "skin" or background that scales along with the widget size, one must use border-image. i know the URL of the image is correct because the image shows in the . + label QLabel. I need this to run on Mac, Windows, and Ubuntu Linux, and it's really not a happy thing if I have to manually draw everything about the button 3 Feb 3, 2020 · Very new to all this qt and programming but I am starting to learn slowly. Probably the image file is not to be found where the program expects. Do this with the base 'icon' setting, at least to see it working with your image, before trying to set the icon per state. Since the border-image property provides an alternate background, it is not required to specify a background-image when border-image is specified. tab->setStyleSheet("background-color: rgba( 255, 255, 255, 0% );" ); Create a frame and add a border image and then try adding buttons to that frame. Qt -> Qt Resource File -> press Choose -> name your file -> Finish. To make the changes of colors you can use stylesheets, in Qt Designer you must follow the following steps: Right click on the item you want to change and select: change stylesheet. How to Style. The File menu gives the user the possibility to: Open… - Open an image file. Add New. When styling a QPushButton, it is often desirable to use an image as the button graphic. private: QPixmap _qPixmap, _qPixmapScaled; public: void setPixmap(const QPixmap &qPixmap) { setPixmap(qPixmap, size()); } protected: Nov 24, 2023 · The object inspector is a custom Designer plugin form used as a QDockWidget, with a qt_designer_objectinspector_dock object name set (see [1] note); this means that you can use a proper selector type for that: QDockWidget#qt_designer_objectinspector_dock QTreeView { selection-background-color: green; selection-color: white; } Jun 27, 2017 · 4. That's called shadow build. Provide details and share your research! But avoid …. I am designing a UI in QT Designer. Jul 21, 2017 at 10:05. One solution is to apply the background image only to the widget, so we use the . resources. qrc) and click Save. Jul 1, 2015 · I need to put an image from the internal resources as a background image of a QPushButton. To reload resources, click on the Reload button . Hey thanks for the help, but I'm looking for more of a direct solution. Qt Design Studio opens image files in the image viewer. scaled(this->size(), Qt::IgnoreAspectRatio); QPalette palette; palette. Jun 4, 2012 · Thank you it works!! by the way do you know how to set QTabWidget (tab) transparent, same as the image background because I'm struggling to find how to do it. How are you setting the border-image for the frame in designer? @Heike Right click on the frame and click Change styleSheet -> Add Resource -> border-image. kamalakshantv. png) } Now in this case all the child widgets also have the same image as background image. /image. #frame1 {border-radius: 15px; border: 3px solid white;} When I try to use some different border properties that I'm reading in the docs, such as this, I can't see a border. 105 8. qrc file is opened in Qt Creator, click the Add button followed by Add Prefix button. Use the toolbar buttons or keyboard shortcuts to: - Export SVG images to pixmaps or copy an image as a data URL, which enables you to include it in web pages as if it were an external resource. List of Stylable Widgets. In the last reply it was suggested the use of the following code: QPixmap pic(". jpg is a simple 500x350 red image): #centralWidget {. This was exactly what I needed and it worked Aug 7, 2015 · The main issue I am having is when I make the image as background using the stylesheet for 'Form' it carries over as the background for the list widget and text edit widget as well. This Qt example shows how to resize an image contained in a dialog, so that when the dialog is resized, the image stretches accordingly. setScaledContents(1) The "1" sets the "setScaledContents" to true which scales the image to fit the current size of Qlabel at all times. After opening your . :) 0. answered Jul 21, 2017 at 9:49. Mar 25, 2019 · Image File should be in your qrc file. Unfortunately, this method overrides the border style I was trying to set. Asking for help, clarification, or responding to other answers. In addition, Qt Design Studio comes with a set of more powerful and flexible graphical primitives, that allow creating more complex shapes, such as borders, triangles, arcs, and pies in the 2D view. setBrush(QPalette::Background, bkgnd); this->setPalette(palette); Thanx in advansed. I'm trying to create a styled button with an svg file I have. --- Summary: Learn how to enhance your Qt Designer interface by adding a background image with this step-by-step guide. I am applying the below style using Qt Designer on the root widget. QBitmap is only a convenience class that inherits QPixmap, ensuring a depth of 1. that is normally used when loading from a qrc file. scaledToHeight(height, Qt::SmoothTransformation); However, what can we do if Jul 15, 2013 · This is how it looks like in editor: Style sheet for centralWidget (background. background-image: url (e:/test. There is a setting to set the icon by clicking the Oct 21, 2010 · K. The first is the scrollarea itself (made transparent with the first line of the stylesheet). marouane18. widget. Using Qt Designer’s New Form Dialog. Jul 29, 2014 · I just upgraded to QT Creator 5. QT. Jun 4, 2012 · First, I started by adding a new Qt Resource in the way to get . Get the inner group box object. By default, each border line has a value of 0. However, you can use some of the components in Components to draw basic shapes, such as rectangles. ui designer file when i put it in the stylesheet. A Zhihu column where you can freely express yourself through writing. msgLbl->setStyleSheet("background-color: rgba(255, 255, 255, 10);"); would be the simplest Feb 2, 2018 · The buttons are designed to handle icons like show in the documentation, a background image as the name suggests will be put in the image as background of the widget. QImage is designed and optimized for I/O, and for direct pixel access and manipulation, while QPixmap is designed and optimized for showing images on screen. Once you have added this CSS style to your HTML document, the image will be displayed as the background of your Qt Designer application. Nick I added additional information. How to modify the above to have it only configured as a background image to the root widget. Print… - Print an image. Use Use QPixmap::QPixmap ( const QString & fileName, const char * format = 0, Qt::ImageConversionFlags flags = Qt::AutoColor ); QLabel::setPixmap ( const QPixmap & ); Jun 4, 2012 · First, I started by adding a new Qt Resource in the way to get . . I have found here some way to do that, but nothing seems to work. setStyleSheet("background-image: url(The_Project_logo. QWidget {. label -> setGeometry(QRect(QPoint(75,25),QSize(50,200))); please help. Feb 15, 2010 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. I have tried this C++ over Qt : Controlling transparency of Labels and Buttons but it doesn't work. In contrast for the other widgets this attribute has no influence, a border or background image is always shown. #frame1 {border-radius: 15px; border-width: 3px Oct 4, 2013 · I'm new to Qt and having some issues! Using QtCreator, I created a simple window that i'm now trying to set the background image of. The Image type displays an image. cpp file and use the images from your . the problem is caused because the background image is going to be applied to all the widgets so the color of the button is not modified. i tried these things based on what I found online, but none worked: self . Then press the button to the color side and select background-color, Then select the color and press the OK buttons. @S. 3/ Scroll to pixmap property and select intended image; click scaledContents is wanted. Pseudo Code: QGroupBox *innerGBox = new QGroupBox(); innerGBox->setStyleSheet("background-color: red"); To know more about setting styles programmatic , refer below link. QWidget {background-image: url (. - Zoom in and out ( ) - Play and pause animated GIF and Jun 4, 2012 · First, I started by adding a new Qt Resource in the way to get . You must look at the properties on the bottom right hand side of the QtCreator window for the selected QObject. I prefer to do it this way instead of writing tedious line sof code :) – marouane18. dmg file you'll find the installer. bkgnd = bkgnd. You can read more about the Qt Stylesheet syntax here. To add images and icons to your project, first you need to make sure that the images and icons are being placed in your project's directory. Go to mainwindow. Most visual components in Components are based How can I simply set background of my QDialog? I can easily set colour of background, but when i try use image, my background just goes black. I'd like it to have some sort of simple animation when the button is clicked (turning slightly Mar 21, 2017 · 1. qrc file. From the property editor dropdown select "Choose File…". jpg); } With this, you should give your central widget the id/objectname "centralwidget". images) Click the Add Files button (fifth from the left Jul 9, 2014 · In particular I observe that the attribute WA_StyledBackground must be set to show a border or a background image while a background color is set independently. Click the Edit Resources button to edit your resources. wrote on 25 Oct 2010, 03:34. Add your image to resources (. Nov 26, 2023 · Thank you. Jun 22, 2012 · background image is a gradient , 16bit 1x800 px png. jpg)"); Aug 31, 2009 · 5. what's i'm facing is that the window's background pic doesn't take the size of the window when maximized and the picture for the qframe doesn't appear at Jun 4, 2012 · First, I started by adding a new Qt Resource in the way to get . I accomplished this by editing the Style Sheet in Qt Designer with: background-colour: rgb(240, 240, 240); But now I have two new problems I can’t solve: The buttons (--> Send) are not rounded anymore. In this dialog, you can May 27, 2020 · you need to use setStyleSheet at some point. Sep 24, 2015 · I thinks its the ":" in the paths. gif ani Mar 1, 2022 · 1. Image Viewer Example. png. Output: Creating Buttons. Well I used to write code in Autoit and work on Windows. QLabel is typically used for displaying text, but it can also display an image. GaussianBlur effect softens the image by blurring it with an algorithm that uses the Gaussian function to calculate the effect. Overriding the paintEvent method is also a possibility. qml (for example). In addition, Qt Designer provides style sheet integration, making it easy to view the effects of a style sheet in different widget styles. This widget should have the same grey background color as the main window (picture A). I have put a label for display the entered number and answer so I want to change the color of this label. . jpg) no-repeat center center fixed; background-size: cover; } Apr 29, 2015 · I am using an image with a transparent background to set image button. QString. Sep 21, 2022 · I would need to put a background image, stretched as background of the first tab of my QTabWidget. 3 and created a brand new QT Widgets Application project and am using the Microsoft VC++ compiler. Thus, my solution is rather short plugging the QLabel and QPixmap together. qrc file as follows: Mar 20, 2020 · I'm trying to set background picture for the window and give it full window size even when i maximize it and i have a qframe in which I'm trying to set another picture as background for it. Resource Files. but when I maximize the window, the widget or the frame is maximized, NOT the content on the layout. And set the background color using "setStyleSheet" function. you'll now see your image within the widget. but when i run the application it doesnt show the image. Jan 17, 2017 · 10. In addition, if the Detailed Description. Resize it to the size you want the image to appear. And I tried this : I’m using Qt Creator. Aug 19, 2014 · From the doc I sent above: [quote]A background-image does not scale with the size of the widget. How can I do that. All I have is a resource file with "logo. QWidget#centralwidget. Nov 19, 2019 · As the name hints, the border-image CSS property is used to draw borders; while what you see seems like a "background image", it actually is a border object that splits your image in a 3x3 grid rectangle that covers the whole button area; each section is then "stretched" to fill its own rectangle. Jul 21, 2017 · First : Click on StyleSheet. I'm learning day by day Qt, so I'm not familiar with it and particularly with qss file. png); } Also tried removing the ":" in background, but doesn't make a difference. It is common to try the background-image property, but this has a number of drawbacks: For instance, the background will often appear hidden behind the button decoration, because it is not considered a background. Exit - Exit the application. How do I make those retain there own stylesheets. This QLabel will actually display the image. and select an image file to insert. {. For that I will be using qt image widget. If the child widget exceeds the size of the frame, QScrollArea automatically provides scroll bars. jpg works, but "G:\\2\\qt. Apr 10, 2019 · I'm using QT Designer. centralWidget. png) } with image on E: That said, using absolute path will come back and haunt you if you ever want to run the app elsewhere than on your pc. To create a button component: Select File > New File > Qt Quick Files > Qt Quick UI File > Choose to create a UI file called Button. qrc file) of your application. png to there, then clicked on add resource -> background-image and picked img. except AttributeError: def _fromUtf8(s): Right-click on the project file. in 40 seconds add picture easily Jul 23, 2015 · I am developing calculator using qt framework. Click Design to edit the file in the 2D view. Zoom Out - Scale the image down by 25% Mar 31, 2017 · ui->label->setStyleSheet("QLabel{ background-color : black; color : white; }"); So after this my outcome looks like this: As you can see in the above image, there is white border which is of main window because we have not set the back color of main window (it is not clearly visible because webpage color is also white). setPixmap(QPixmap(image)) Then add the following line: self. Go through to where it asks you to choose which components to install. Note: This effect is available when running with OpenGL. QAbstractScrollArea. I added background image to the main window, and same is inherited to the buttons, and widgets inside the main window, How can I stop this auto inherit and keep default settings for the objects inside the main window ? Thanks in Advance !!. (You may need than to resize the image and stuff but it should work). 2, it is possible to edit stylesheets in Qt Designer with the stylesheet editor. This is the Layout with widget/frame as transparent background on Qt-designer: This is the Layout after maximizing the window There is also a page "Qt Style Sheets Examples" that implies that if you want to change the background color, you have to take over all aspects of drawing the button, which just seems like overkill. I need also to adapt the size of the image to the size of the button. Mar 9, 2017 · Then you can reference the resource via its alias and if you change the image in the resource, you won't need to change the code: - QPixmap image(":/images/logo"); QPushButton* pPushButton = new QPushButton(QIcon(image)); Or if the button is already defined: - pPushButton->setIcon(QIcon(image)); Dec 3, 2014 · because the code that i have now ill only give me a tiled appearance when i re-size the GUI. Qt Creator opens image files in the image viewer. Follow simple instructions to create visually appealing 2. Once an image is loaded, the View menu allows the users to: Zoom In - Scale the image up by 25%. The source of the image is specified as a URL using the source property. You can use the ID-selector of Qt stylesheets to apply the stylesheet just to this instance with this id (object name). Now go into QLabel properties and select the image you added to resources for pixmap property. When you run Qt Designer, you’re presented with the application’s main window and the New Form dialog. I was trying to use: QPallete with QBrush, StyleSheets :(. Do this in your constructor. QPushButton and images. Within the resource browser, you can open existing resource files or create new ones. tab->setStyleSheet("background-color: rgba( 255, 255, 255, 0% );" ); 46. setStyleSheet (". Ultimately, the solution is to simply use image, not background-image or border-image. You'll need to copy Jun 15, 2024 · The background-size: cover; property ensures the image covers the entire background area, and the background-repeat: no-repeat; property prevents the image from repeating. qt. In my GUI I use a tab widget. The following table lists the Qt widgets that can be customized using style sheets: Widget. The window in the background is Qt Designer’s main window. Click the Add Prefix button (fourth from the left) and enter a name (e. Ideally in the designer, but I think it cannot be done in the designer, so via code would be ok too. qt image processing, qt display qimage To specify a resource file you must enable the resource editor by opening the Tools menu, and switching on the Resource Browser option. #8. If you're using Qt Designer you can also set the stylesheet from within the designer window (look in the properties bar on the right. from PyQt5. I tried: QMainWindow{ background-image:url(:image_256_8bit_latest_back. The prefix is used to categorize your resources so that it can be better managed when you have a ton of The 4 border lines (2 horizontal and 2 vertical) break the image into 9 sections, as shown below: Each border line (left, right, top, and bottom) specifies an offset in pixels from the respective edge of the source image. As background-color works fine, so by that extension background-image should also work. this works for me. Dec 16, 2010 · I'm running my Qt app through command line with a parameter -stylesheet. While the . The example shows how to combine QLabel and QScrollArea to display an image. png" ); // rightt click on image in qrc to copy its path. Interestingly there are two widgets with an non-transparent background. setStyleSheet (" background-image: url ( :/test. Supports the box model. tab->setStyleSheet("background-color: rgba( 255, 255, 255, 0% );" ); May 6, 2020 · In Qt Creator, you can generate skeleton source code files while creating a new project. fromUtf8. This gives me everything I want: an Feb 14, 2022 · In this video I am going to show How to Display/shw image using label in Qt. Next, with the Label selected, look in the right hand QLabel properties panel for the pixmap property (scroll down to the blue region). You can do it using "setStyleSheet" function of widgets. May 16, 2013 · Setting border-image on a QToolButton places the image on the button at a scaled size to fit the button and it rescales when you resize the button. I have an issue setting a . Dec 7, 2022 · I just added the layout once on an empty QWidget and once on an empty frame and set the StyleSheet on the widget/frame. Then click on add color and choose your background color or whatever. jpg – Jablonski Dec 8, 2020 · I would like to add a background image to my main window without changing the background image of pushbutton in it and also need to keep the aspect ratio. Use selectors. Open the installer to start the installation. h" #include "ui_mainwindow. png );") self Aug 29, 2012 · I think the image property is for subcontrol only (see doc), while border-image is valid for labels. i tried with. Add the image to your resources in your project. from PyQt4 import QtCore, QtGui. self. label = new QLabel("0",this);//label for the text inputs. in the qss: @ form. Detailed Description. Immediately, in my Qt designer, I added some JPEG images in this new resource. the url needs fixing: no quotes nor 'r'; simply the file name (maybe the space in the file name needs escaping, you could try to play with it) This, for instance, works: import sys. Timestamps:00:00 Intro00:40 Folder structure Mar 1, 2014 · From Qt Style Sheets Reference: It should work. Still didn't work. tabWidget. QWidget {background-image:" + "url (" + BACKGROUND_IMAGE_URL + ");" + "border:0px}") May 21, 2022 · Download the installer from the Qt website -- you can opt for the open source version. For example, the following definition sets the bottom line 10 pixels up from Jun 4, 2012 · Thank you it works!! by the way do you know how to set QTabWidget (tab) transparent, same as the image background because I'm struggling to find how to do it. jpg" doesn't work. png"); and then use label->setPixmap(pic); where label is a pointer to the label. For my frame, when I type this which I got from an online tutorial, I get a nice white rounded border. May 24, 2013 · 0. Add -> Add File -> and choose your images. The styles for the controls work but not when I'm trying to load a background image for the MainWindow. May 1, 2011 · 4. MainWindow:: MainWindow (QWidget *parent) : QMainWindow (parent), ui (new Ui::MainWindow) {. Then refer to it in your stylesheet: background-image: url(:/Style/img. g. + scrollareaContent QWidget. Since the border-image property provides an alternate background, it Open the Resource Browser ( View -> Resource Browser) Click the Edit Resources button (first on the left) Click the New Resource File button (first on the left) Enter a file name (e. When dealing with a QPixmap, one can choose a visually better scaling, for example, pixmap = pixmap. Note: Components are listed in Components > My Components only if the filename begins with a capital letter. selector: w. To understand this lets asume a similar but simplyfied layout: scrollarea QScrollArea. Feb 14, 2024 · Drag this onto the QMainWindow to add it. MainWindow with a single QLabel added. If you want it to stretch for the entire widget use background-image, but I'm guessing what you probably want is an image that expands in one direction, either vertically or horizontally, in that case use background-position to fix it to one of the borders of your widget: image: url(:/path/to/image); background-position: bottom left; Jun 12, 2014 · Steps: 1/ Within Qt designer position a Qlabel within your widget. Image background C++. How can I set a QPushbutton to be transparent, but the image inside to be visible? I have tried setting it transparent, but the image's background turns black. May 15, 2011 · With the Image Viewer application, the users can view an image of their choice. If you're using Qt Creator, you should be aware that it builds the target binary in a separate directory (usually with a name like build-yourprojectname-qtversion-Debug or so). Searching around lead me to believe i should use QT stylesheets and after trying some examples I managed to get a background image working by using: this->setStyleSheet(" background-image: url(C:/test. QtWidgets import QApplication, QWidget, QLabel, QMainWindow, QPushButton, QAction. Example code: Editing Resources with Qt Designer Using a Designer UI File in Your C++ Application Using Stylesheets with Qt Designer Since Qt 4. ui ->setupUi (this); QPixmap bkgnd ( "qrc:/images/xyz. How can I resize an image in the same way, without distorting it / keeping its proportions the same? Of course if the width/height ratio of the dialog is different from the one of the image, I will get a "grey You can use background-repeat and background-origin to control the repetition and origin of the background image. All derivatives of QAbstractScrollArea, including QTextEdit, and QAbstractItemView (all item view classes), support scrollable backgrounds using background-attachment. thumbnail. Select the macOS package under the latest version of Qt. As default, Qt uses a very simple, quick and ugly way of scaling images, Qt::FastTransformation, probably a nearest neighbor interpolation or something very similar. Jan 27, 2021 · Actually, QPixmap::scaled() has everything built-in what's necessary for scaling by keeping the aspect ratio. kn dg cw sv iw cm yr ci rf rh