Qicon from theme.

Qicon from theme fromTheme()方法加载系统主题中的图标，或者使用QIcon()构造函数从文件中加载图标。例如，要从文件中加载一个图标，可以使用以下代码： from PyQt5. like here), and bundle this directory as QRe #内置图标. name and icon. fromTheme("open-file") just contain a null pointer. fromTheme - 30 examples found. addFile は、独自のカスタム ディレクトリ構造があり、 freedesktop. QtGui import QIcon icon = QIcon ("path/to/icon. Dec 22, 2015 · QIcon::fromTheme works under specific conditions. g. The benefits of doings this are limited, though a tutorial on it is planned. Qt will use this Python QIcon. fromTheme. If the icon is not found in the theme, icon. It works well with . png. As far as I understand this should give me the correct icon: from PyQt5 import QtGui icon = QtGui. we’ll have to simply. Fonts are used on both Android (Google Fonts) and Apple (SF Symbols - SF ~= "San Fransisco" font) Nov 18, 2011 · "Or if you want to provide a guaranteed fallback for platforms that do not support theme icons, you can use the second argument:" @QIcon undoicon = QIcon::fromTheme("edit-undo", QIcon(":/undo. However, the icons remain the same style. icon ( Theme . 10). You can, for example, use the QIcon ‘s states to display differing pixmaps depending on whether the tool button or menu entry is checked or not. setThemeSearchPaths([str(Path(__file__). It’s only really worth doing if you want to have a Linux-native look on Linux desktops. 1 based on Qt 5. Basically use any "bluetooth. Icon themes are standard on the Linux desktop but seem to be a foreign concept on Mac and Windows. It did not work, so I downloaded a sample 256*256 PNG file, put it in the same directory as the script, but that did not work either. Nov 19, 2022 · Looking up every icon file in all search paths would take too long IMHO and I prefer using QIcon. Creating the theme file is a bit cumbersome at first, but once you get the gist, it's quite easy, and using fromTheme() is simpler than always using the full path, with the major benefit that once you use this method, icons don't need to be updated again, as setting the icon theme will automatically switch all icons accordingly. name 현재 아이콘 테마에서는 그렇지 않으면 false 를 반환합니다. A theme can also specify one or several fallback themes. When you retrieve a pixmap using pixmap( PySide. Dec 30, 2021 · I am having troubles to display the icon of a QAction selected from the current icon theme. you can also use the QIcon class to load and manipulate icons dynamically. Icon Engines. Feb 20, 2020 · On Linux, it works great. Jun 16, 2016 · On my computer, Gnome's default theme has 106 folders; the Oxygen theme has 166; Breeze has 56; hicolor has 483. To make QIcon use the high DPI version QIcon QIcon. For sizes above 32 x 32, it uses qt_extended_48x48. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. I use icon names specified in the Icon Naming Specification, like QIcon::fro Feb 14, 2022 · Qt Designer won't let me insert more than one theme name. But I find it weird that I downloaded a resources file (. QIcon undoicon = QIcon::fromTheme("edit-undo", QIcon(":/undo. To fetch an icon from the current icon theme: QIcon Mar 10, 2015 · like discussed in #950, #2210 advances the icons. theme文件,该文件(除其他外)指定可以包含图标的子目录。仅使用扩展名为png或svg的图标文件。 QIcon类有一些静态方法,可以准确显示 Qt 在哪里寻找主题图标: QIcon facilitates the integration of icons into Qt applications by providing a versatile and efficient interface for working with icon resources. May 18, 2021 · I've try to use icon from theme, like this. png") Nov 27, 2021 · The radio button does not appear in Windows whether in the light and dark modes. printer-printing The icon used while a print job is successfully being spooled to a printing device. supportedImageFormats() and QImageWriter. fromTheme 在 PyQt 中无法显示图标 在本文中，我们将介绍在 PyQt 中使用 QIcon. Mind the note in the fromTheme() docs - by default it works only on X11. Oct 17, 2013 · When using QIcon::fromTheme(""), if that icon theme is owned by root, it doesn't load any icon (it can't find the icon theme actually), but if that same icon theme is owned by user, it loads the icons just fine. QIcon. Aug 14, 2023 · QIcon::fromTheme works with icon themes following the freedesktop icon theme specification. Internally, QIcon instantiates an icon engine backend to handle and render the icon images. QFluentWidgets 中的组件一般支持以下三种图标参数类型： str: 图标路径; QIcon：Qt 图标; FluentIconBase: 流畅图标抽象类; QFluentWidgets 提供的 FluentIcon 继承自 FluentIconBase, 包含数百个矢量图标，可以在 gallery open in new window 示例的图标界面查看和搜索图标。 PyQt：PyQt QIcon. Dec 31, 2024 · 该QIcon则类提供了在不同的模式和状态可缩放图标。 该name应该对应于包含描述它的内容的index. In KDE, if you change the icon theme, the icons should also update to match the new theme. 8k次，点赞31次，收藏24次。QIcon类是Qt框架中一个强大且灵活的类，用于图标的管理。无论是简易的小型脚本，还是复杂的桌面应用程序，都可以通过QIcon方便地提高用户界面的美观和功能性本文详细介绍了QIcon的创建、使用和一些实用技巧，并通过示例代码展示了如何使用QIcon设置按钮 本博客主要总结树形控件QTressView的用法，全文主要通过一个实例，来展示树形控件QTressView用法。 注意： a1. Missing many icons (last updated 2006). I made the ui with Qt designer and exported it with pyuic4 sample. Icon engines differ in the way they handle and render icons. pushButton_n6. In order Olimi’s Blog | loading 快乐老家 Jul 17, 2013 · I'm currently displaying an icon from the resources using the following HTML code as text: Currently there is no (supported) tag assigned. Apr 5, 2024 · I am facing a problem with QIcon. But in general May 18, 2021 · I've try to use icon from theme, like this. 在这个示例中，我们创建了一个QIcon对象并将其作为参数传递给setWindowIcon()函数。QIcon可以从文件、资源、网络URL或其他来源加载图标。 接下来，我们将介绍如何从不同来源加载窗口图标。 2. Is this wrong? QPixmap pm_off = QIcon::fromTheme(icon_off). svg icons (for Mar 31, 2017 · After digging for a while here and there, and digging in how QIcon itself uses an svg file to load an icon, here's what I learned: QIcon, when called with an svg file (or any other image type for that matter), it calles addFile() subsequently, which only uses the extension of the file (called QFileInfo::suffix in Qt) to determine the method that converts the image file to an icon. setIcon(QtGui. Is this wrong? QPixma When providing an application theme, then you need to follow the Icon Theme Specification to specify which files to use for different resolutions. Again, thanks a lot for the code example! Session Summary Session Owners Notes. 1 Mar 23, 2020 · Heya, I usually put this snippet in my resources location to update my resource file when im changing it alot: import subprocess from pathlib import Path file_path = Path(__file__) output_file = file_path. The last resort fallback theme is always "hicolor". The type of icon engine is determined by the first file or pixmap or theme added to a QIcon object. 10 起支持图标。这意味着，按钮、项目委托和菜单项现在除了文本标签外，还能够显示图标。 Use the QImageReader. qrc file for edit and then right-click the resource (in this case image) that you are trying to address, then click "Copy Resource Path to Clipboard". 7w次，点赞8次，收藏54次。QIcon是Qt中的一个类，用于处理各种状态下的图标。它可以包含一系列图像，根据窗口的不同状态（如正常、禁用、激活、选中等）自动选择合适的图像进行显示。 To fetch an icon from the current icon theme: QIcon undoicon = QIcon:: fromTheme("edit-undo"); 注意： By default, only X11 will support themed icons. Mar 24, 2021 · @sierdzio Thanks. In order to use themed icons on Mac and Windows, you will have to bundle a compliant theme in one of your themeSearchPaths() and set the appropriate themeName(). Mar 28, 2025 · Returns the QIcon corresponding to name in the current icon theme. If no such icon is found in the current theme fallback is returned instead. org有一个Icon Theme Specification文档，它定义了图标主题的概念，并定义了搜索特定图标的算法。 Qt在其实现中遵循此规范，并且正如@eyllanesc QIcon::fromTheme()提到的那样，静态方法可用于查找所需的图标。 Mar 30, 2017 · 在深入研究了一段时间之后，并深入了解了QIcon本身是如何使用svg文件加载图标的，下面是我所学到的： QIcon，当使用svg文件(或任何其他图像类型)调用时，它随后调用addFile()，后者只使用文件的扩展名(在Qt中称为QFileInfo::suffix)来确定将图像文件转换为图标的方法。 Jul 20, 2020 · Icon theme "icons" not found. For example:. Reload to refresh your session. Create custom icon themes Define sets of icons with different sizes and states. The latest version of the freedesktop icon specification can be obtained here: Apr 22, 2020 · 文章浏览阅读1. Jun 10, 2020 · Note: By default, only X11 will support themed icons. The QIcon class provides scalable icons in different modes and states. parent / Path('resources. You can take Icons from KDE's Breeze or Oxygen, they use LGPL 3 as license Aug 14, 2014 · Hello! I get this warning to the command line from my Qt4 app: @QIcon: Cannot load icon dialog-question from theme@ It's caused by this snippet: @QMessageBox *messbox = new QMessageBox(QMessageBox::Question, "title", "text", 高DPIアイコン. In order Dec 21, 2015 · QIcon::fromTheme在特定条件下工作。 如果它能在QIcon::themeSearchPaths()中为QIcon::themeName()找到它. fromTheme (QString name, QIcon fallback = QIcon()) Returns the QIcon corresponding to name in the current icon theme. python icon = QtGui. qrc') # cmd and sub process to generated new font resource file cmd = f'pyside2-rcc {resource_file Apr 8, 2024 · 文章浏览阅读1w次，点赞7次，收藏60次。QIcon简介在Qt中， QIcon类提供了处于不同模式和状态下的可缩放图标。QIcon可以从给定的一组像素图生成较小，较大，激活和禁用等情况小的像素图。 Apr 5, 2024 · PyQt5 Customizing Icons. One of the features of this package is the QIcon fromTheme class which allows developers to easily add icons to their applications. . fromTheme to switch icons in the app depending on the theme selected by the user. security-high The icon used to indicate that the security level of a connection is known to be secure, using strong encryption and a valid certificate. On other platforms it is not set by default. QIcon が high DPI アイコンをサポートする方法は 2 つあります: addFile 経由と fromTheme 経由です。. It might still work if you set the appropriate themeSearchPath. with bunch of stylesheet set in it, and it seem to change the color of my icon but can't see which Use the theme Applications can load icons from the custom theme. source can be set to ensure that an icon will always be found. we’ll have to simply put the icons into a freedesktop icon theme spec compatible directory (e. The latest version of the freedesktop icon specification and naming specification can be obtained here: Dec 27, 2022 · Let's assume we have a set of light theme icons setup for some QPushButtons/QActions in our application. Note Icon theme creation involves platform-specific considerations and might require additional tools or libraries. Icons play a vital role in the visual appeal of an application. fromTheme('document-new') Jun 18, 2019 · But this is loading the icon from a different theme. Apr 19, 2024 · The system theme has a lot of icons, so instead of creating my own, I tried to use one of those (text-editor). Qt 快速控制中的图标. This icon should be the theme's printer device icon, with a document emerging from the printing device. – Feb 20, 2020 · I am getting crazy with QIcon::fromTheme() My goal is to get "standard" icons on Linux (with KDE or Gnome) and fallback custom icons for all other platfor The following are 30 code examples of PyQt5. Such pixmaps are used by Qt UI components to show an icon representing a particular action. Nov 4, 2015 · Here is a working solution, but it require to rasterize the svg before modification. QIcon will Oct 31, 2024 · QIcon类是Qt框架中一个强大且灵活的类，用于图标的管理。无论是简易的小型脚本，还是复杂的桌面应用程序，都可以通过QIcon方便地提高用户界面的美观和功能性本文详细介绍了QIcon的创建、使用和一些实用技巧，并通过示例代码展示了如何使用QIcon设置按钮图标。 b2->setIcon( QIcon::fromTheme("open-app-library") ); // If this does not exist in icon pack (It won't), it will search :custom-icons/ Jun 9, 2020 · I want to build a QIcon from theme icons, but how do you convert a QIcon::fromTheme() to pixmap? Everything I try doesn't seem to work. fromTheme when loading a . theme文件中的themeSearchPath目录 Aug 20, 2022 · 图标主题目录必须包含一个index. ADD . source is also set. The type of icon engine is determined by the The icon colour is derived from the QApplication palette to better match the theme of your system. index 文件归 root 所有，则找不到任何文件。如果 theme. png"));@ so on Windows will be used only fallback icons, right? PySide2. Provides a way to use system-provided icons for a consistent look and feel across your Qt application. fromTheme(const QString &name, const QIcon &fallback) to specify a Qt5 built-in icon as fallback which a) obviously is neither possible for all icons a theme may offer and b) does break the look & feel of the active theme. QtGui. It picks up the user-configured default theme. qrc file to use It will return QIcon instance according to the theme and color, the color parameter is available when the icon is svg format. so let’s do it right and use QIcon. After setting the icon from the theme with self. Lucky for us, Qt has integrated icon themes quite seamlessly no matter what operating system you are using. Customize your application’s appearance with icons for main windows, dialogs, and toolbars. org has an Icon Theme Specification document that defines the notion of icon theme and defines an algorithm to search for specific icons. The QIcon class provides scalable icons in is necessary if you plan on following the Icon Theme Specification. parent. Custom icon theme search paths can be set with QIcon::setThemeSearchPaths(). Test case: i used AwOken icon theme, which i copied to home folder. Oct 31, 2018 · I have a program which I package as a dpkg and as an AppImage, from the same source. It doesn't mention non-X11 based Linux platforms. The fallback mechanism will eventually use the default whenever your theme doesn't provide an icon. I tried PySide2 and 6. Additional files or pixmaps will then be handled by the same engine. If the icon is found in the theme, it will always be used; even if icon. QIcon QIcon:: fromTheme ( const QString & name, const QIcon & fallback = QIcon() ) [static] Returns the QIcon corresponding to name in the current icon theme. Leverages the user's preferred icon theme settings. Jul 25, 2012 · static PySide. The path is correct, but the icons assigned with e. QIcon will May 18, 2021 · Windows does not have a platform theme, you can create a custom one based on something like this example. You can override this and even creating animations and stateful icons by creating the engine yourself and pass it to a QIcon. 加载本地图标文件 Internally, QIcon instantiates an icon engine backend to handle and render the icon images. jpg image. It seems to be output by app. If we want to switch to another theme (dark theme), then we can simply use the code mentioned above to switch the look and feel of our Widgets by applying a different stylesheet. exec();. png")), then it works. gitorious. To fetch an icon from the current icon theme: QIcon undoicon = QIcon:: fromTheme("edit-undo"); Note: By default, only X11 will support themed icons. QIcon is part of Painting Classes and Implicitly Shared Classes. actionSample. For other platforms you would need a custom Internally, QIcon instantiates an icon engine backend to handle and render the icon images. fromTheme(name[, fallback=QIcon()]) Parameters: name – unicode; fallback – PySide. You can rate examples to help us improve the quality of examples. I use QIcon. Aug 25, 2020 · QIcon 类代表图标，实现在 QtGui 共享库中。QIcon 对象可以认为是一系列图像的组合，每个图像代表窗口在某种状态下应该1显示的图标。 构造 QIcon 类支持以下构造函数： QIcon(); // 构造一个空图像构成的图标 QIcon(const QPixmap &pi Jul 4, 2018 · QIcon 类代表图标，实现在 QtGui 共享库中。QIcon 对象可以认为是一系列图像的组合，每个图像代表窗口在某种状态下应该1显示的图标。 构造 QIcon 类支持以下构造函数： QIcon(); // 构造一个空图像构成的图标 QIcon(const QPixmap &pi For sizes up to 16 x 16, QIcon uses qt_extended_16x16. index 归用户所有，但图标归 root 所有，它可以加载一些图标，而对于一些它只加载一个空图标（例如，它没有加载“退出”，但它加载了'gtk-preferences'）。 May 8, 2024 · 1、简介 函数原型 QIcon QIcon::fromTheme(const QString &name)QIcon QIcon::fromTheme(const QString &name, const QIcon &fallback) 上述两个函数可以从系统主题中获取图标，后者可以在主题中找不到图标时，再使用自己定义的图标，使用方法如下： QIcon undoicon = QIc A QIcon can generate smaller, larger, active, and disabled pixmaps from the set of pixmaps it is given. pixmap(16); QPixmap pm_on = QIcon::fromTheme(i Sep 27, 2020 · 文章浏览阅读1. QIcon icon = QIcon::fromTheme(QStringLiteral("view-refresh")); On Linux is okay but on Windows is nothing. png" icon currently on my system. png")); [static] bool QIcon::hasThemeIcon(const QString & name) 사용 가능한 아이콘이 있는 경우 true 를 반환합니다. 当选中QTreeView的一行时，将会自动触发信号clicked(const QModelIndex)，该信号可以可以绑定一个槽函数treeViewClicked(const QModelIndex)，然后可以将要实现的功能在该槽函数中实现。 May 13, 2011 · The static function QIcon::fromTheme() used above can also be used with custom, locally defined icon themes that are placed into Qt Resource files 14). Contribute to qt/qtbase development by creating an account on GitHub. The message doesn't appear if I use one of the system icon themes in setThemeName (I'm on Kubuntu - KDE). You signed out in another tab or window. The svg is converted to a QImage and painted in choosen color at icon creation. Mar 28, 2025 · Learn how to create and set icons for windows in PyQt6 using QIcon. I'm able to use QIcon::fromTheme and get a pixmap from that icon in main before exec() and that doesn't cause the message, so I assume it isn't caused by QIcon. If it can find it in the QIcon::themeSearchPaths() for the QIcon::themeName() If the desired icon isn't there, Qt Designer won't be able to do any of the from theme, named icons. When you retrieve a pixmap using pixmap( QSize, Mode, State), and no pixmap for this given size, mode and state has been added with addFile() or addPixmap(), then QIcon will generate one on the fly. This is done at runtime (baked in 500px here) (thanks to This SO answer). Question: How can I setup Qt Designer to use the icons from the Breeze theme? Versions: Qt Creator: 3. A QIcon can generate smaller, larger, active, disabled, and selected pixmaps from the set of pixmaps it Jan 8, 2017 · QIcon::fromTheme("gnome-do") will return a QIcon from the current theme. fromTheme方法，我们可以根据主题名称获取系统主题中的图标。然而，有时候在使用QIcon. 函数原型. Qt Quick Controls 自 Qt 5. QIcon; Return type: PySide. fromTheme extracted from open source projects. like here), and bundle this directory as QResources in ':/icons'. Feb 19, 2024 · 本篇文章介绍了QT中的QIcon类，其定义和常用构造函数、成员函数进行了详细的讲解，并通过实际代码演示了QIcon类在QPushButton控件中的使用方法。 QIcon 是 QT 中用于表示图标或者 图片 的一个 类 ，可以将其用于QAction、 QT oolButton等控件中，来为应用程序增加更多的 Feb 20, 2020 · @VRonin Thanks a lot for the code example! It works, so I have to find what I do differently that makes the problem I'll post the results here when I will have figured it out. png")); [static] bool QIcon:: hasThemeIcon (const QString &name) Returns true if there is an icon available for name in the current icon theme, otherwise This icon should be the theme's printer device icon, with the theme's style element for errors, overlayed on top of the icon. setIcon(icon) Mar 25, 2025 · This icon should be the theme's printer device icon, with a document emerging from the printing device. Feb 3, 2010 · I've found the solution by looking at QIcon unit tests: http://qt. Nov 14, 2024 · You signed in with another tab or window. May 11, 2020 · If you're not using designer, you can set icons from a theme in your code using the following. May 15, 2011 · When a tool button or menu entry is checked, the QIcon ‘s state is On, otherwise it’s Off. addFile("", QSize(), QIcon::Normal, QIcon::Off); I can only provide a QPixmap or a filename. Also the theme change will not be reflected if done like Feb 14, 2022 · In my main window, I set the theme search path as follows: QIcon. 1、简介. A QIcon can generate smaller, larger, active, and disabled pixmaps from the set of pixmaps it is given. These are the top rated real world Python examples of PySide6. May 27, 2024 · QIcon 类代表图标，实现在 QtGui 共享库中。QIcon 对象可以认为是一系列图像的组合，每个图像代表窗口在某种状态下应该1显示的图标。 QIcon 类支持以下构造函数： QIcon(); // 构造一个空图像构成的图标 QIcon(const QPixmap &pixmap); / See below for an example theme description and the corresponding directory structure for the image files. I'll have to do more step by step testing and I'll also post the theme files, so we can check it on different systems. source will be used instead. py') resource_file = file_path. Themes defined this way can be used across all platforms. py. When building the icon manually with icon. QtCore. QIcon. void QIcon:: paint (QPainter *painter, int x, On X11, the current icon theme depends on your desktop settings. If you are using a current version of Qt Creator, you can open your . Retrieves an icon from the current desktop theme. If you want to use icons from another theme with fromTheme() you must specify that theme. Since 4. Feb 20, 2020 · //for Linux, we keep the icon theme of the user #ifdef Q_OS_WIN QIcon::setThemeName("flat-bw"); //we provide our own icons for MS Win / osX #endif Then in my /resources directory, I have a QRC file such as: Feb 29, 2016 · Hello I'm trying to get icons from my current theme on Linux machine (Ubuntu 14. Returns the QIcon corresponding to name in the current icon theme. QIcon::fromTheme() は、Qt GUI アプリケーションでテーマアイコンを簡単に利用するための便利な関数です。この関数は、指定されたテーマアイコン名に基づいて、現在のテーマから対応するアイコンを取得します。 Oct 17, 2013 · 如果来自 AwOken 的 theme. Moving cursor over icon wasn't working, but when I switched back to default theme the icons were dissapearing when I was moving the cursor. Is there an way to use an icon from theme in HTML code like it can be achieved using the following code: QIcon::fromTheme(QStringLiteral("list-add"), Dec 7, 2015 · One is for resource file and directly above it is a text field for a standard icon from theme. QIcon::fromTheme() Suffers from XDG legacy. fromTheme(_fromUtf8("document-open"))), I get the following source code : If you want to provide a guaranteed fallback for platforms that do not support theme icons, you can use the second argument: QIcon undoicon = QIcon:: fromTheme("edit-undo", QIcon (":/undo. 如果不存在所需的图标，Qt设计器将无法执行任何from主题，命名为图标。 但是. fromTheme(). Fill in the icon's filename, without the extension, in the Theme row. # use light theme icon button = ToolButton ( FluentIcon . ui > sample. icon = QIcon. You switched accounts on another tab or window. The binary from the dpkg shows icons in the toolbar, the AppImage does not. Both icon. 5. PyQt5 provides support for different types of icons, including standard system icons, custom images and SVG icons. Nov 14, 2022 · Yes, that's it. Qt follows this spec in its implementation, and as mentioned by @eyllanesc QIcon::fromTheme() static method can be used to lookup needed icons. Feb 20, 2020 · //for Linux, we keep the icon theme of the user #ifdef Q_OS_WIN QIcon::setThemeName("flat-bw"); //we provide our own icons for MS Win / osX #endif Then in my /resources directory, I have a QRC file such as: May 18, 2021 · I've try to use icon from theme, like this. com/qt/qt/trees/master/tests/auto/qicon Here is an example of a valid . QIcon corresponding to name in the current icon theme. QIcon will Jun 9, 2020 · I want to build a QIcon from theme icons, but how do you convert a QIcon::fromTheme() to pixmap? Everything I try doesn't seem to work. Mar 31, 2021 · Indeed, freedesktop. Theme icons are referenced by a name, and regular icons by a source URL. It looks as I could do this the "create your own icon" way so I can reuse existing QIcon code. It works fine in MacOS though. fromTheme时，图标无法显示出来，仅显示一个空白的框。 Jan 5, 2024 · Please provide a valid minimal reproducible example, and ensure that the theme is properly loaded, possibly switching the theme names in the theme files (to see if the selected theme does load the correct files, as it's possible that the fallback mechanism of QIcon just attempts to load the first available icon if the theme is not loaded Returns the QIcon corresponding to name in the current icon theme. org Icon Theme Specification を使用する必要がない場合に便利です。 Internally, QIcon instantiates an icon engine backend to handle and render the icon images. May 11, 2020 · Qt themes work on all platforms, it’s just that on Linux you get the theme for “free”. But On Windows, there is no way to get any icon. 6. QtGui is a package library for creating graphical user interfaces (GUI) using the Python programming language. The following example fetches an icon from the current theme. you can set icons for buttons, menus or even the application window using the setIcon() method. 。如果检查目标系统中的主题搜索路径并设置主题名称，则更有可能获得成功。 示例 Feb 20, 2020 · I am getting crazy with QIcon::fromTheme() My goal is to get "standard" icons on Linux (with KDE or Gnome) and fallback custom icons for all other platfor Use the supportedImageFormats() and supportedImageFormats() functions to retrieve a complete list of the supported file formats. To make QIcon use the high DPI version of an image, add an additional entry to the appropriate index. parent / Path('guiResources. Qt Base (Core, Gui, Widgets, Network, ). Mar 30, 2021 · 实际上，freedesktop. anywhere we want to use an icon, we just need to do. fromTheme 方法时无法显示图标的问题，并提供解决方法和示例代码。 阅读更多：PyQt 教程 问题描述 PyQt 是一个强大的开发工具包，用于创建跨平台的桌面应用程序。 Nov 20, 2023 · 文章浏览阅读690次。本文详细介绍了UOS统信操作系统中Qt应用开发时QIcon的使用，包括内置图标引擎、图标类型（主题类型、功能类型、引用数量划分）、图标命名规则，以及图标使用方法和运行环境的说明。 PyQt是一个功能强大的Python库，用于创建跨平台的图形用户界面。其中，QIcon是一种用于显示图标的类。通过QIcon. png")); Nov 18, 2024 · 文章浏览阅读1. Sounds stupid to load a QIcon with ::fromTheme, convert it to QPixmap and then call addFile. The latest version of the freedesktop icon specification and naming specification can be obtained here: May 18, 2021 · I've try to use icon from theme, like this. Usage: Here are some common use cases and methods associated with QIcon: Creating Icons: You can create QIcon objects from various sources such as image files, pixmaps, or system standard icons. Mar 14, 2017 · so no, the icon isn't a font, it's really a QIcon since the ->icon(int) return this type So I guess I'll have to use your method with a transparent PNG. If you want to provide a guaranteed fallback for platforms that do not support theme icons, you can use the second argument: QIcon undoicon = QIcon::fromTheme("edit-undo", QIcon(":/undo. On non-Linux platforms you have to define your own icon theme from scratch. The generated code for this uses QIcon::fromTheme() and thus falls under some restrictions: the available names list is listed here. Icons from an application-provided theme take precedence over the native icon library. 5k次，点赞18次，收藏14次。QIcon 是 Qt 框架中的一个类，它用于加载、管理和显示图标。QIcon 类在 QtGui 共享库中实现，可以认为是一系列图像的组合，每个图像代表窗口在某种状态下应该显示的图标。 Aug 25, 2020 · 可供参考的思路为（Qt Creator中做法）： 构建自己的Icon类，储存图标文件和颜色（主题）信息，所有地方均使用自定义图标类，通过icon方法转化为QIcon。其中颜色绘制通过读取QImage，动态修改像素值进行构建。参考： 构建出类似于QIcon的较通用性接口较为复杂。 Oct 4, 2017 · 文章浏览阅读3. Use the QImageReader. QIcon QIcon::fromTheme(const QString &name) QIcon QIcon::fromTheme(const QString &name, const QIcon &fallback) 上述两个函数可以从系统主题中获取图标，后者可以在主题中找不到图标时，再使用自己定义的图标，使用方法如下： Mar 3, 2025 · 1、简介. qss) to change 'theme' of my app. Returns the PySide. Oct 15, 2021 · setIcon()是用于设置窗口部件（如按钮、标签等）的图标。它可以将一个 QIcon 对象设置为窗口部件的图标，用于在界面中显示该部件的图标。 Sep 18, 2023 · 下面我们来详细介绍一些QIcon类的常见用法。 加载图标文件 您可以使用QIcon. QIcon QIcon::fromTheme(const QString &name) QIcon QIcon::fromTheme(const QString &name, const QIcon &fallback) 上述两个函数可以从系统主题中获取图标，后者可以在主题中找不到图标时，再使用自己定义的图标，使用方法如下： Mar 30, 2023 · 1、简介 函数原型 QIcon QIcon::fromTheme(const QString &name) QIcon QIcon::fromTheme(const QString &name, const QIcon &fallback) 上述两个函数可以从系统主题中获取图标，后者可以在主题中找不到图标时，再使用自己定义的图标，使用方法如下： QIcon undoic Icon Engines¶. Aug 22, 2014 · Find your icon theme in /usr/share/icons, check what the icon's filename is, and then check the XDG Icon Naming Specification to make sure you're using the official name and not some compatibility alias for an older desktop that not all themes will provide. setThemeName("breeze") And it shows it at runtime as following: This is what I want to see in the Qt Designer as well. Usage Nov 14, 2018 · This guide will attempt to demystify the usage of icon themes in Qt applications. supportedImageFormats() functions to retrieve a complete list of the supported file formats. If I set the icon with a path (such as QIcon::fromTheme (":icons/flat-bw/48x48/document-open. QtGui. Icons which cannot be found in a given theme need to be looked up in the fallback themes until an icon is found. put the icons into a freedesktop icon theme spec compatible directory (e. addFile() or PySide. 4k次。本文详细介绍了Qt中QIcon::fromTheme函数的使用方法，该函数用于从当前系统主题中获取图标。文章提供了函数的参数说明，返回值解释，并引用了自由桌面图标规范，同时给出了在不同平台下使用主题图标的注意事项。 May 15, 2017 · To fetch an icon from the current icon theme: QIcon undoicon = QIcon:: fromTheme("edit-undo"); 注意： By default, only X11 will support themed icons. If I "force" it to take my custom icons (by calling "setThemeName"), it also works. For sizes between 17 x 17 and 32 x 32, it uses qt_extended_32x32. theme file: Use the supportedImageFormats() and supportedImageFormats() functions to retrieve a complete list of the supported file formats. parent / "icons")]) This works on Windows and macOS, but on Linux I do not see any icons. addPixmap(), then PySide. In my Python code I select the theme via. I found few python code examples. Aug 31, 2022 · Qt always uses the default system theme, setThemeSearchPaths only sets the search path for the themes, not the icons. QSize, Mode, State), and no pixmap for this given size, mode and state has been added with PySide. Integrate with the system Install the icon theme to make it available to applications. fromTheme("document-new") self. Nov 18, 2024 · 文章浏览阅读1. png and scales it down if necessary. 2w次，点赞5次，收藏14次。在图片路径中添加了一些图标，使用QIcon方法，却无法显示。然后我在想qt中这些图片是不是像函数一样需要“声明”之类的，所以我就在项目文件中依次翻找。 This icon should be the theme's printer device icon, with the theme's style element for errors, overlayed on top of the icon. fromThe I had this same issue recently, where I malformed the resource string. fqbt xoy ppqyly hgssr oibqj zuho jua avoj vmshy tlptc anvic eltmu aldlqd wvy qcqv