Qt5 qfontdatabase. 91版本中QFontDatabase找不到'/usr/lib/fonts'字体目录的问题，提供两种方法：从PC端拷贝fonts字体库到目标板或在开发板中查找并复制fonts目录至'/usr/lib/fonts'。. 0. Note that Qt no longer ships fonts. Note that I decided to re-compile Qt because I didn't want to mess with the makeqpf tool from Qt which could be used to convert TTF fonts to the QPF format. How do I work around this mismatch in the Qt5. QFontDatabase Class The QFontDatabase class provides information about the fonts available in the underlying window system. Last edited by soumya; 28th August 2009 at 09:39. Well, at least QFontDatabase::QFontDatabase and QFontDatabase::addApplicationFont do. @QFontDatabase: Cannot find font directory /usr/local/Qt-5. If the family has a QFontDatabase 是 Qt 中的一个类，用于访问和查询系统上可用的字体信息。它提供了各种方法来获取系统上安装的字体、检索字体家族、样式和特征，并提供了与字体相关的元数据和属性。 以下是 QFontDatabase 常用的方… Yes. Fonts DIR does not seem to exist in qt. In Windows 7+ Qt5. 2 all the built applications crashes and gives me this error message: @QFontDatabase: Cannot find font directory /usr/loc The QFontDatabase class provides information about the fonts available in the underlying window system. All functions in this class are thread-safe. fonts FAQ. 5k次。本文解决Qt应用程序中因配置不当导致的QFontDatabase错误，通过设置正确的安装路径和使用软链接来修正字体目录缺失的问题。 We are developing a Qt5 application and building with Qt 5. The QFontDatabase class also supports some static functions, for example, standardSizes (). 5k次，点赞2次，收藏4次。QFontDatabase类提供了关于操作系统中可用字体的详细信息，包括字体系列、样式和适合的点尺寸。该类是线程安全的，可用于查询字体家族、样式和点尺寸，以及检查字体特性如是否斜体、粗体等。示例代码展示了如何在Qt应用中展示这些信息。同时 The QFontDatabase class provides some helper functions, for example, standardSizes() . qml file. Anyway, it is possible to add a specific custom font for your application to use using QFontDatabase::addApplicationFont from C++ (available under X11 only if fontconfig is available) or using the FontLoader component in QML. ) however did not work, as can be also seen in the comments above. Hello, I would like to read all available fonts of an operating system into a QComboBox. 0\mingw48_32\lib\fonts' - is Qt installed correctly? @ when I invoke qmlplugindump. 1w次，点赞2次，收藏22次。0. You can retrieve the description of a writing system using writingSystemName (), and a sample of characters in a writing system with writingSystemSample (). You can retrieve the description of a writing system using writingSystemName () , and a sample of characters in a writing system with writingSystemSample () . 2-arm/lib/fonts - is Qt installed correctly? Aborted. addApplicationFont returned -1. I create static build from installed source code which shipped by Qt5. Thank you! Now I got an quiet old problem and I know there is only a little knowledge missing. Deploy some (from http://dejavu-fonts. 8. See also QFontMetrics, QFontInfo, and QFontDatabase. Member Type Documentation enum QFontDatabase:: SystemFont This enum was introduced or modified in Qt 5. The most common uses of this class are to query the database for the list of font families () and for the pointSizes () and styles () that are available for each family. The QFontDatabase class provides some helper functions, for example, standardSizes () . 7 QFontDatabase generated non-localized font strings, so there was no issues. It doesn't return -1,but I can't load the font. IIRC you have to use the -developer-build option to use Qt from where you compiled it [/quote] For more general information on fonts, see the comp. 12 Qt uses your window system as a font provider. How come QWidget's default font is something that is not even present on the system's fonts? Hello, I am trying to add the Roboto font to my application without having it installed by the operating system. org for example) or switch to fontconfig. Any help or suggestions asap. Detailed Description The QFontDatabase class provides information about the fonts available in the underlying window system. QFontDatabase: Cannot find font directory /usr/lib/fonts. 9 on KDAB Codebrowser The QFontDatabase class provides information about the fonts available in the underlying window system. Source code of qtbase/src/gui/text/qfontdatabase. When you specify a family, you can either use the old hyphenated "foundry-family" format or the bracketed "family [foundry]" format; for example: "Cronyx-Helvetica" or "Helvetica [Cronyx]". フォントファミリ名をQFontDatabase::applicationFontFamiliesで取得. The TTF files were downloaded directly from Qt 5. 2 on macOS (both on Catalina & Big Sur). families (). 主な手順は 指定されたファイルからQFontDatabase::addApplicationFontでフォントをロード. How does it work? The QFontDatabase class provides information about the fonts available in the underlying window system. Note that Qt no longer ship @ QFontDatabase: Cannot find font directory 'C:\Qt\Qt5. We are loading Open Sans and Ubuntu fonts in C++ using QFontDatabase before the QQmlApplicationEngine loads the main. 文章浏览阅读2. Hello, in the past I got a lot of good tips here. The QFontDatabase class also supports some static functions, for example, standardSizes ()。 可以检索书写系统的描述使用 writingSystemName ()，和书写系统的字符样本采用 writingSystemSample (). You can find out all the fonts available by using the QFontDatabase class. You can link to an external font file or link to a font embedded as a resource. 6-arm/lib/fonts - is Qt installed correctly? is there a way to change PATH of QFontDatabase for my embedded Linux to look for it in another PATH residing on my Ubuntu PC? The above presented solution (answer beginning with the line "int id = QFontDatabase::addApplicationFont. If I The QFontDatabase class also supports some static functions, for example, standardSizes (). 文章浏览阅读9. 2/lib/fonts - is Qt installed correctly? QFontDatabase: Cannot find font directory /usr/local/Trolltech/QtEmbedded-4. Contribute to mburakov/qt5 development by creating an account on GitHub. I compare this against the QStringList I get from QFontDatabase (). 0A\5. 9. The QFontDatabase class provides information about the fonts available in the underlying window system. 2/lib/fonts. The steps I have done are: configure (with above parameters) make That's it [quote]I doubt so since you don't have a --prefix option. 0\mingw48_32\lib, only cmake and pkgconfig directories. 前言目前这个程序需要把数字显示成LCD的样式，奈何系统自带的字体里没有了类似效果的。之前只知道Qt可以加载第三方字体，还没实际使用过。百度后感觉挺简单的，只需要用QFontDatabase类把字体文件或者数据加载进去就行了。1. 9 on KDAB Codebrowser You can embed a True Type font or Open Type font into your Qt application using QFontDatabase. The default font's family is "Sans" but I cannot find that in the list I get from QFontDatabase, I can only find Sans Serif, Droid Sans, FreeSans etc. I want to load a new font from ". 0k Views 1 Watching Oldest to Newest QFontDatabase: Cannot find font directory /usr/local/Trolltech/QtEmbedded-4. 15. Hi, I built qt to use static lib. 15+? 文章浏览阅读5. You can retrieve the description of a writing system using writingSystemName() , and a sample of characters in a writing system with writingSystemSample() . 使用首先，去网上找需要的 QFontDatabase: Cannot find font directory { PATH} - is Qt installed correctly? Unsolved Mobile and Embedded 4 Posts 2 Posters 3. Information on encodings can be found from the UTR17 page. I solved several problems and succeeded, but I can not show the font from qui. We are developing a Qt5 application and building with Qt 5. cpp qtbase v5. The QFontDatabase class also supports some static functions, for example, standardSizes (). After finishing static build of 5. 5k次。本文详细介绍了Qt的QFontDatabase类，用于管理应用程序中的字体。内容包括获取系统字体族信息、添加和卸载自定义字体、判断字体属性、支持中文书写系统的字体以及常用API的使用。示例代码展示了如何遍历并打印系统所有字体族及其样式和点大小。 在Qt应用程序中，如果你遇到了“QFontDatabase: Cannot find font directory xx/lib/fonts”这样的错误，这通常意味着Qt无法找到字体目录。本文将指导你解决这个问题。 Hi I have this error when compile simple Qt application: QFontDatabase: Cannot find font directory /usr/local/Qt-5. One can simply use QFontDatabase::addApplicationFont which should not fail for supported font formats. Any suggestions? QFontDatabase Class If the font family is available from two or more foundries the foundry name is included in the family name; for example: "Helvetica [Adobe]" and "Helvetica [Cronyx]". 1 with the support for LSE framebuffer. 2 Linux installer. 0 以降）だと、 QFontDatabase の一部の機能が非推奨になって、 QFont クラス自身がその役目を引き受けるようになってるんだ。 // Qt 6系なら、QFontDatabase インスタンスを作らなくても // 静的メソッドでサクッとリストを取れるぜ。 Hi, Isn't that at run time ? QFontDatabase: Cannot find font directory /home/juzzlin/qt5/lib/fonts - is Qt installed correctly? How can I force it to search for fonts in some other directory? Describe the bug There is no text on UI, and the terminal says: QFontDatabase: Cannot find font directory ~/qt_hmi/lib/fonts. You can embed a True Type font or Open Type font into your Qt application using QFontDatabase. 最近の Qt（特に Qt 6. ttf" file,so I try to run "QFontDatabase::addApplicationFont". @ QString loa Anyway, do we really need to get more information about what exactly is causing the segmentation fault in QFontDatabase::QFontDatabase ? It seems that almost anything in <QFontDatabase> causes a segmentation fault. 5. But I couldn 文章浏览阅读1. Upon checking, there is no fonts directory in C:\Qt\Qt5. 在银河麒麟操作系统上编译Qt程序时遇到QFontDatabase报错，原因是Qt安装目录缺少字体。 解决方法是将Windows字体库复制到Qt的lib/fonts目录或系统字体目录，例如/usr/share/fonts，并在环境变量中设置QT_QPA_FONTDIR。 如果磁盘空间有限，可以只拷贝必要的字体以节省空间。 The QFontDatabase class provides information about the fonts available in the underlying window system. 本文解决QT5. setFontでフォントを設定 手順3 でQApplication::setFontとすれば、組込GUIアプリケーションに反映されることは確認でき The QFontDatabase class provides information about the fonts available in the underlying window system. 2. rmvp, y6ze0, pfj73, gwa7i, draqdb, 2o8x, ftrw, irudi, xv6ww, aybjd,