Qt text display widget It would be nice if I could contr Apr 4, 2025 · Discover the basic widgets in PyQt6 like QLabel, QPushButton, QLineEdit, and more. May 27, 2017 · I am using PyQt5 and I just want to add a text to my window. Setting up a view to display the items in the model is simply a matter of calling its setModel () function with the directory model as the argument. append(str(text)) and I know that's not right. These include the use of display widgets such as QTextBrowser and QTextEdit, creation of documents with QTextDocument, editing using a QTextCursor, and exporting the document structure. Thanks in advance. We insert some text into the document. But It does't display the characate Widgets Tutorial - Creating a Window If a widget is created without a parent, it is treated as a window, or top-level widget, when it is shown. Feb 22, 2015 · This is because you are modifying the GUI (self. Thanks. Question: How to preserve a text formatting. Buttons are grouped in categories according to their behavior. Using HTML Markup in Text Widgets Widgets automatically detect HTML markup and display rich text accordingly. 0. Apr 28, 2025 · self. Jul 24, 2011 · For you custom widget to be centered, you need to create an empty QWidget, set a layout on to the empty widget, add custom widget on to the layout, and set center alignment to the custom widget, something like this. Many of the examples provided with Qt use this approach, and it is also covered in the Qt Widgets Tutorial. First I thought QLabel was a good solution, but it was not. I have not found any clear help about that on the web. Example Jun 23, 2023 · Kekz wrote on 23 Jun 2023, 04:44 #1 Hello, I have the following scenario: I receive text data from an application, which uses ASCII control characters to change the color of the text (intended for terminals). Display Features A QComboBox is a compact way to present a list of options to the user. We obtain the QTextDocument using editor. 2, so this might be related to Qt 5. Running the Examples Open and run examples in Qt Aug 15, 2011 · Hi! I'm looking for a widget to display rich text (I'm gonna use it in QTableWidget via setCellWidget (. The Qt Widgets Module provides a set of UI elements to create classic desktop-style user interfaces. Secondly, QTextEdit, QTextBrowser or QTableWidget are very slow and need lots of memory to only display some data (for debug purpose). May 27, 2025 · The QListWidget::setItemWidget (QListWidgetItem *item, QWidget *widget) function is the tool you use to set this custom widget for a particular item in your list. Qt library 5. Editing Features A combobox may be editable, allowing the user to Qt’s `QLabel` is a versatile widget used to display text and images in graphical applications. Incidentally, QLCDNumber is the very oldest part of Qt, tracing its roots back to a BASIC program on the Sinclair Spectrum. Animations Integrating JavaScript in QML Qt Quick 3D - add-on for 3D graphics Qt Shader Tools - add-on shader effects Qt Widgets User Interfaces Qt Widgets are the user interface elements that are typical in desktop environments. QPlainTextEdit is an advanced viewer/editor supporting Jan 9, 2006 · In Qt4, there is no basic widget which allow to display basic text like a log file. A combobox is a selection widget that shows the current item, and pops up a list of selectable items when clicked. 13. My primary screen is a 4K monitor with 150% display scaling and I have a secondary monitor with 1080p and 100%. See also getText (), getInt (), getItem (), and getMultiLineText (). label. Composite widgets can also be created by subclassing a standard widget, such as QWidget or QFrame, and adding the necessary layout and child widgets in the constructor of the subclass. textEdit. Sep 26, 2013 · For the graphic widget, after some research it seems QGraphicsScene fits the requirements the most, but I'm not sure what widget to use for the text editor such that it gives me a signal when hovering over any block of code (and also send a string parameter "id" of the block). This is where you tell Qt how big your custom widget wants to be. io May 27, 2025 · In Qt programming, QTextEdit is a powerful and versatile class that provides a widget for displaying and editing both plain text and rich text By default, labels display left-aligned, vertically-centered text and images, where any tabs in the text to be displayed are automatically expanded. So, QWidget::show () means this show () function belongs to the QWidget class (and Qt Widget Gallery Qt's support for widget styles and themes enables your application to fit in with the native desktop environment. See full list on doc. Rich Text Examples Qt provides powerful document-oriented rich text engine that supports Unicode and right-to-left scripts. And I would like to do it on top of that layout. We filter the data supplied by the model by calling the setRootIndex () function on each view, passing a suitable model index from the Displaying Text with Qlabel This PyQt6 code defines a simple GUI application with a single window displaying a QLabel widget containing the text "This is a QLabel widget". I am working in Windows 10. If I am planning on printing the play by play to the gui, which widget should I use in qt designer? A guide to Qt's extensible model/view architecture. For example, if you create a custom widget that displays a specific image, your sizeHint () might return the dimensions of that image. Qt's text widgets are able to display rich text, specified using a subset of HTML 4 markup. A message box can also display an icon and standard buttons for accepting a user response. AlignTop) # making label multi-line self. More Rich Text Examples Qt provides powerful document-oriented rich text engine that supports Unicode and right-to-left scripts. It is optimized to handle large documents, for example see QTextEdit vs QPlainTextEdit QTextEdit is an advanced WYSIWYG viewer/editor supporting rich text formatting using HTML-style tags. I created a class to assign a thread for my image processing algorithms (RenderThread). Unfortuantely, doing this takes a really long time (a few seconds for even small files). For example, this code sets up a sunken panel with a two-line text in the bottom right corner (both lines being flush with the right side of the label): Qt Designer: What widget should I use to display text that is normally printed to the console? I have my NBA basketball simulation game that I created, and now I am trying to create a gui. For example, all the digit buttons (labeled 0 to 9) append a digit to the current Mar 22, 2017 · @bask185 said in How can you display text with different colors?: That black thing needs to be my display it is an OpenGlWidget. First some background -- In GUI applications the update of the UI is handled by an event loop, and a queue of things to do. Dialog Examples Qt includes standard dialogs for many common operations, such as file selection, printing, and color selection. Notice that using a QTableWidget is not the only path to display information in tables. In Qt, like in most GUI frameworks, widget is the name given to a component of the UI that the user can interact with. textDict is nicely formatted into string variable info. The examples are part of the Qt packages. This widget can be used for a variety of applications where the multiline text is required such as messaging, sending information or displaying information and many other tasks. The QLabel is added to a QVBoxLayout, which is then set as the layout for the window. You might need to set a fixed width or use layout managers to control the widget's size. buttons, comboboxes and scroll bars, are designed for direct use. A Widgets application to display and print JSON, text, and PDF files. May 27, 2025 · In Qt programming, QTextEdit is a powerful and versatile class that provides a widget for displaying and editing both plain text and rich text. Jun 11, 2015 · I am developing an application where I need to display some text real fast. 2. I have seen some tutorials on how to hover over a pushButton to change background color. i use setTitleBarWidget, and it works. The background colour is not a great way of choosing what widget to use. What you can try to do is composing QLabel widgets with text and other widgets in layouts, but it will be a nightmare to handle this composition if text dynamically changes or window resized. Comboboxes can contain pixmaps as well as strings if the insertItem () and setItemText () functions are suitably overloaded. Related course: Create GUI Apps with PyQt5 PyQt5 textbox Creation Widgets Tutorial Introduction Widgets are the basic building blocks for graphical user interface (GUI) applications built with Qt. Apr 7, 2015 · 1 There is no built in widget in Qt that supports such combination of text and other widgets. The widgets examples show how some of the widgets available in Qt might appear when configured to use the a particular style. Oct 18, 2023 · In this part of the Qt5 C++ programming tutorial, we talk about some basic Qt5 widgets. cpp In that I used QLCDNumber widget to display Number+Character. More May 27, 2025 · Overriding for Custom Widgets If you create your own custom widget by inheriting from QWidget (or a subclass), you often must overridesizeHint (). Related course: Create GUI Apps with PyQt5 PyQt5 textbox Creation Jun 12, 2019 · Display icon&text on QLabel . Any assistance will be appreciated. May 27, 2025 · show (): This is the name of the function itself. Jul 7, 2018 · I want a widget in Qt that will act like a spreadsheet cell does. See also QLabel and QFrame. See the User Interfaces overview for more information on using widgets. The position can be set using the move (x,y) method or using a grid layout. Display text or images, apply styles, and enhance your GUI application with QLabel in Python. For example, setting a label's text property with the string "<b>Hello</b> <i Apr 4, 2025 · Learn how to create and customize a QLabel widget in PyQt6. We can insert media files such as images and links also in the Textwidget. You provide it with the QListWidgetItem you want to enhance and the QWidget you've created. With default resolution and scaling (100%) ,widget alignments are good. Things are done in order, and only one thing is done at a time. title is the text When using a scroll area to display the contents of a custom widget, it is important to ensure that the size hint of the child widget is set to a suitable value. In this tutorial, you'll learn how to use the PyQt QTextEdit class to create a widget that edits and displays both plain and rich text. Mar 13, 2022 · Hi, I need a Widget to display a number of simple text lines. Two APIs for using QMessageBox are provided, the property-based API, and the Apr 25, 2018 · Hi, I have mainwindow. We would like to show you a description here but the site won’t allow us. Documents can be manipulated using a cursor-based API, and their contents can be imported and exported as both HTML and in a custom XML format. Mar 22, 2024 · 文章2（Qt教程 — 3. Introduction ¶ Widgets are the basic building blocks for graphical user interface (GUI) applications built with Qt. title is the text We would like to show you a description here but the site won’t allow us. Sep 8, 2021 · PyQt6 has a huge library of widgets including buttons, checkboxes, list boxes and sliders or dials. I imported it in the main program but it wont show the text on the textEdit widget. Oct 20, 2024 · QLabel is a widget that provides a way to display text or images in your PyQt6 application. If you find the HTML support insufficient for your needs you may consider the use of Qt WebKit, which provides a full-featured web browser widget. You can also develop your own custom widgets and controls, and use them alongside standard widgets. Apr 4, 2025 · Learn how to create and customize a QLabel widget in PyQt6. Also, I have seen a table widget to have the correct font size. I do not need to edit the text. QObject::eventFilter () is reimplemented to handle mouse events on the calculator's display. This includes windows, buttons, text boxes, sliders, and virtually anything you interact with visually in a Qt application. I tried adding some sort of buffering to the logging widget: i. The titles of main window and dialogs together with the menus have the correct font size. g. As well as just concatenating strings together instead of a queue. setText(text) Below is the implementation I created another file named stream. Syntax: Jul 7, 2018 · I want a widget in Qt that will act like a spreadsheet cell does. Nov 21, 2022 · I am still using Qt 5. Sep 9, 2016 · I want to display the text of the file I just read in in a QTextEdit widget. Custom dialogs can also be created for specialized modal or modeless interactions with users. Sometimes I need to display another widget. Apr 25, 2025 · Learn how to create a PyQt application that displays text entered in a QLineEdit widget when a button is clicked. The views are constructed in the same way as other widgets. We can set the size of the textbox using the resize (width,height) method. widget. These documents cover a range of topics, from basic use of widgets to step-by-step tutorials that show how an application is put together. A Jan 5, 2020 · I have developed a desktop application using Qt creator. Apr 25, 2025 · Learn how to create a Python PyQt application that displays text entered in a QLineEdit widget when a QPushButton is clicked. With this text field, you can display plain text, but also rich text like HTML-formatted text and images. Common Rich Text Editing Tasks There are a number of tasks that are often performed by developers when editing and processing text documents using Qt. label) # the setText method def setText(self, text): # setting text to the label self. 6 深入了解Qt 控件：Display Widgets部件 (2)-CSDN博客）： Text Browser（文本浏览器）、Graphics View（图形视图） 1 Display Widgets简介 Qt Designer 显示窗口部件提供的面板中，提供了 10 种显示小部件。 以下是Display Widgets 的介绍： The Calculator class provides a simple calculator widget. How to fix this issue. I was able to add a menu bar, a tab and some radio buttons. Widgets that use QTextDocument, such as QLabel and QTextEdit, are able to display rich text specified in this way. So, I need a fast way to render text on the screen. When a user selects a radio button I would like to show in a text box a brief description of what that selection means; when it selects another radio QLabel Class The QLabel widget provides a text or image display. Yes i removed the stderr part Mar 28, 2016 · Like the example: I created a class to display image (mQtPaintWidget). Font size are getting increased. Then I added a Widget to my central widget in mainwindow. Several properties Qt Widgets - Text Viewer Plugin Example A widget example with menus, toolbars and a status bar. [static] int QInputDialog:: getInt (QWidget * parent, const QString & title, const QString & label, int value = 0, int min = -2147483647, int max = 2147483647, int step = 1, bool * ok = nullptr, Qt::WindowFlags flags = Qt::WindowFlags ()) Static convenience function to get an integer input from the user. For full HTML markup, see the Qt WebEngine module. Displaying and formatting text To display text in QML, create a Text item and set the text property to the text you wish to display. Qt comes with a large range of standard widgets that users of modern applications have come to expect. Displaying Data Using a Table Widget ¶ If you want to display data arranged in a table, use a QTableWidget to do so, without dealing with much configuration. I also added a Text Edit to my central widget and called it Console. This GUI will be used to get a float value from the user then two radio buttons to ask what conversion they need to perform then display the result. Custom Widgets and Painting Qt comes with a large range of standard widgets that users of modern applications have come to expect. The positioning of the content within the QLabel widget area can be tuned with setAlignment() and setIndent() . I used it because it is black and I do not know any better. Nov 19, 2020 · Martin Fitzpatrick Hi Bentraje welcome to the forum! The problem is the random_pick method. Does this really matter much or would I need to use a very specific widget? Widgets Tutorial Introduction Widgets are the basic building blocks for graphical user interface (GUI) applications built with Qt. Visit the Downloads page for more information. The Text item will now display that text. A precise timer issues a "draw string" command and a text is displayed for about 10-30 ms. I'm not sure which widget to select for my display. The Text Viewer example is a text editor built around QPlainTextEdit, in the form of a plugin for a general-purpose Document Viewer. setAlignment(Qt. label = QLabel(content) # setting alignment to the text self. See the Qt Widget Gallery for some examples. appendPlainText(msg)) from a thread other than the main thread without using the Qt Signal/Slot mechanism. A comprehensive discussion of many Qt Wrapper and convenience classes and functions to assist with OpenGL development. Aug 2, 2014 · 2 A code below creates a simple window with QLabel. You can also create a data model and display it using a QTableView, but that is not in the scope of this tutorial. Also, I tried displaying only fixed amount of messages (about 50) per To display text the Text type is provided by the Qt Quick module. Mar 7, 2017 · For n < 1e5 it work ok. But for>1e5 it starts freezing the UI. QWidget: This is the base class for all user interface objects in Qt that can be seen on the screen. S. Here is the screenshot showing the text on a widget and as a result of print() The rich text support in Qt is designed to provide a fast, portable and efficient way to add reasonable online help facilities to applications, and to provide a basis for rich text editors. You can use stylesheets to customise the background colour of any widget On this display I want to show 40 x 16 characters Looks like May 27, 2025 · We create a QPlainTextEdit widget. All of the code for the Text Viewer example is in the TxtViewer class, which inherits AbstractViewer. )). Text can be inserted using the QTextCursor class or using the convenience functions insertPlainText() , appendPlainText() or paste() . 9. document (). That's why I created 2 very basic widgets : QLogText is like QTextBrowser but only to display plain text QLogTable is like QTableWidget for plain text These widgets support only The Widget Classes The following sections list the widget classes. Text can be inserted using the QTextCursor class or using the convenience functions insertPlainText (), appendPlainText () or paste (). But this beautiful formatting is all lost as soon as the text is assigned to QLabel (or any other QWidget). Its purpose is to display the widget. QTextEdit can display images, lists and tables. buttons, labels, text editors) is a widget that is placed somewhere within a user interface window, or is displayed as an independent window. If you really need the text, we recommend that you connect the signals that feed the display () slot to another slot as well and store the value there. It is commonly used for labels, titles, and images in the user interface. An overview of Qt's rich text processing, editing and display features. We set the default font for the document. ui and promoted to this class and called it Screen. Widgets Tutorial - Creating a Window If a widget is created without a parent, it is treated as a window, or top-level widget, when it is shown. Since it has no parent object to ensure that it is deleted when no longer needed, it is up to the developer to keep track of the top-level widgets in an application. It can display text, then when the user double-clicks on it, it becomes editable. QLabel Class The QLabel widget provides a text or image display. I have a shell script with an old text-based user interface: I want to replace my shell code with python and create a graphical user interface using qt designer tool and pyside. py and paste your code there. Text content can also wrap lines along word boundaries with setWordWrap() . qt. It inherits from QDialog and has several private slots associated with the calculator's buttons. It is even possible to provide custom styles and themes for widgets that can be used to change the appearance of standard widgets and appropriately written custom widgets. 12. We have examples for the QLabel, QSlider, QComboBox, QSpinBox, QLineEdit, and QMainWindow widgets. In Qt (and most User Interfaces), widget is the name given to a component of the UI that the user can interact with. Basic Widget Classes These basic widgets (controls), e. AlignLeft | Qt. A tutorial to use OpenGL within Qt Widgets applications. A collection of code samples and tutorials are provided with Qt to help new users get started with Qt development. Nov 1, 2010 · Hi there, I have widget containing a layout. The widgets integrate well to the underlying platform providing native look and feel on Windows, Linux and macOS. If I am planning on printing the play by play to the gui, which widget should I use in qt designer? Oct 5, 2022 · Hi, Please I'm really struggling on how to hover over a label to display text. I am currently using a QLabel, but it's not able to handle that speed, hence it fails to draw the text several times. May 5, 2019 · PyQt5 has a huge library of widgets, including buttons, checkboxes, list boxes, and sliders or dials. Detailed Description A message box displays a primary text to alert the user to a situation, an informative text to further explain the situation, and an optional detailed text to provide even more data if the user requests it. When you update the text of a Jul 20, 2018 · I have a listwidget and i am making the listwidget as a thumbnail of the combination as text and image but the sequence of this is text followed by the imag We would like to show you a description here but the site won’t allow us. For a widget to be part of another widget there are 2 possibilities, the first is to use a layout, and the second is that the main widget is the father of the new widget, in the case of the first image we will use the QLabel Class The QLabel widget provides a text or image display. Jun 12, 2025 · Discover how to integrate Qt Widgets into Qt Quick applications with C++ and QML, enabling multi-window UIs and cross-technology communication for desktop and embedded platforms. One of its powerful features is support for **rich text** formatting using a subset of HTML. i want to show icon & title on the DockWidget header. Using QPlainTextEdit as a Display Widget The text is set or replaced using setPlainText () which deletes the existing text and replaces it with the text passed to setPlainText (). Qt creator 4. I want dispaly current value+'v'. store incoming strings in a QQueue and each 250ms or so (using timer) display them all at once, but it didn't solve the problem. As well I would like to have a semi-transparent background of top widget. There should be no scrolling. However, the look of a QLabel can be adjusted and fine-tuned in several ways. addWidget(self. setWordWrap(True) # adding label to the layout lay. The QLineEdit widget is a one-line text editor. Jul 5, 2017 · I'm building a GUI using the QT designer 5. The window's title is set to "PyQt Label Widget", and it's sized to 320x210 pixels. setText(text) Below is the implementation Display Features A QComboBox is a compact way to present a list of options to the user. Learn how to use them to build interactive GUI applications in Python. The QTextEdit class is a multi-line text box control that displays multiple lines of text, with multiple vertical scrollbars when the text is outside the control’s display range. If I change scale to 125, 150. Qt then takes care of embedding your custom widget within the visual representation of that list item. . What is the best alternative to have rich text, background customizing and also frame width, style and color customizing in my text widget? Feb 22, 2015 · This is because you are modifying the GUI (self. Once the user is done with editing and presses En Qt comes with a large range of standard widgets that users of modern applications have come to expect. Using QPlainTextEdit as a Display Widget # The text is set or replaced using setPlainText() which deletes the existing text and replaces it with the text passed to setPlainText() . The event loop takes items form the queue, does them, then takes the next, and so on. Each GUI component (e. Mar 24, 2014 · Hi all. Jul 12, 2025 · Text Widget Text Widget is used where a user wants to insert multiline text fields. e. To make things more clear I give you a photoshopped example: How can I do it with Qt? Thanks in advance. If you want to display your file as plain text, the widget QPlainTextEdit is better then QTextEdit. If the widget is wide enough to accommodate the entire text on a single line, no wrapping will occur. Widgets can display data and status information, receive user input, and provide a container for other widgets that should be grouped together. Learn how to use them in your apps. How can I reach the textEdit which is in another class of another file? P. Mar 2, 2018 · Layouts are elements that manage the geometry of widgets, in your case both layouts try to occupy the largest available space. Sep 7, 2019 · So I want to have a dock widget in my mainwindow that is able to display the messages I need in a multi-line way and auto-scrolling way and then automatically saved to a log file. Qt Designer: What widget should I use to display text that is normally printed to the console? I have my NBA basketball simulation game that I created, and now I am trying to create a gui. Do you know a simple way to add a text ? May 27, 2025 · Check the widget's width Ensure the widget displaying the text has a defined width that is smaller than the full length of the text. % widgets alignments getting collapsed. The widget is called QLineEdit and has the methods setText () to set the textbox value and text () to get the value. Widgets Widgets are the primary elements for creating user interfaces in Qt. The Widget Classes The following sections list the widget classes. For related uses, the TextInput and TextEdit types provide editable text controls. I want to display this text in different widgets, while also keeping the coloring. In this article you will learn how to use a textbox in PyQt5. My write function is this self. but i use QLabel as the param of setTitleBarWidget, QLabel can show both the setPixmap & setText at the same time With QTextEdit, you get an easy to use class to create a rich text field.