Syntax : label. If you want to manage the text color of QLabel you could wrap it with customized class. Follow edited Jul 25, 2015 at 13:41 QMenu: Set text color for specific QAction. app = QtGui. Or looking for Diagram Scene Example in your Qt Assistant. It is essentially impossible for QPlainTextEdit to make any use of the color property of the style, since there is no single text color to change. qrc resource file. Feb 19, 2021 · I'm trying to change the font weight of selected items in QListWidget with the following code: self. In qss file use variable names: background-color: @myColor; min-width: @myWidth; 3. If you want something for "mouse over" you may have to use "hover Feb 23, 2015 · color: #ffff00;} @ But got painful problem: inside paintEvent I can't get color for checked state to draw text with: @style()->drawItemText(&p, lrect, Qt::AlignCenter | Qt::AlignBottom, opt. For example: ColorLabel(const QString &text, QWidget *parent = nullptr) : QLabel(text, parent) setAutoFillBackground(true); void setTextColor(const QColor &color) QPalette palette = this->palette(); Feb 27, 2019 · Hi. Jul 19, 2021 · Qt does highlighting text in progress bar using painter, not in stylesheet. I can set the color (background and font) with a sytlesheet but the using a stylesheet to set other font properties doesn't work. QPlainTextEdit *p_textEdit = new QPlainTextEdit; p_textEdit->setStyleSheet("QPlainTextEdit{color: #ffff00; background 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 have widget that inherits from QTreeView, and I want to change the text color, but only for a specific column. May 15, 2011 · If several style sheets are set at different levels, Qt derives the effective style sheet from all of those that are set. With that in mind, I would like all my labels, text, etc, to be white by default Sep 26, 2012 · with the stylesheet: @QLCDNumber { color: red; background-color: yellow }@ the background gets yellow, but the digits are still white. For the Color use QPallete, then use {your palette}. Changing it to : from :: didn't work either. To make this work one has to make the button checkable in property. Oct 20, 2013 · Hi, I want to change my application looks so that the background is black. QPushButton#pushButton {. Sep 16, 2015 · I set the border for the groupbox using stylesheet that also works fine, but the border is not fit with the groupbox title. Will also effect subwidgets such as the tab names in a tab widget that you have added to the window in Qt Designer. I'm trying to change QToolTip's text color using stylesheet but no luck. For example, the following style sheet specifies that all QLineEdit s should use yellow as their background color, and all QCheckBox es should use red as the text color: When the widget-style font and palette propagation is enabled, font and palette changes made through Qt Style Sheets will behave as if the user had manually called the corresponding QWidget::setPalette () and QWidget::setFont () methods on all of the QWidgets targeted by the style sheet. You can either use an image or a font like Font Awesome to be loaded. eg: QWidget. Let's say it is child of QPushButton: #include <QPushButton> class CustomButton : public QPushButton { Q_OBJECT Q_PROPERTY (QColor borderColor READ GetBorderColor WRITE SetBorderColor) public: CustomButton (QWidget *parent = nullptr Jan 17, 2018 · I added a font name ":font/Oswald-Regular. Jul 25, 2015 · Refer the Qt Style Sheets example for more options. – OnWhenReady. So here's what I did : QVariantMap variantMap; variantMap. , red). An arbitrary widget's effective style sheet is obtained by merging the style sheets set on the widget's ancestors (parent, grandparent, etc. Please check your question. insert("color",QColor(10,10,10)); Jun 5, 2020 · As the QColor documentation explains, it follows the SVG color names specification, and the Qt stylesheet parser follows the same rule. This is my function: Feb 8, 2011 · 4. Still, this may have different results depending on the OS and configuration (especially considering custom font scaling settings). I want to change the background and digit color of QLCDNumber in Qt Designer and I am going to use that design (GUI) on my Python program. background-color: #333333; } QMessageBox QLabel {. styleSheet () and more simple string Aug 11, 2020 · 繼上一篇的色彩篇，我們還想要更高的自由度，在Qt中利用StyleSheet我們可以完成像是HTML中的CSS一樣的效果。在Python中，設定SytleSheet遠比原生Qt更加 It turns out this is very easy to implement using Qt Style Sheets. For example, QSS supports the box model but doesn’t support the flexbox and grid layouts. 2 Python app import sys from PySide6 import QtWidgets class MyWidget(QtWidgets. qt. 6 a higher level stylesheet set in the creator had no affect on component QLabel, until I added setStyleSheet("") for the individual QLabel. So I have a simple QLineEdit textbox that allows a user to login. I also tried ::unchecked to set the font weigh to normal and that didn't work :( I don't know what else to try. See full list on doc. I'm trying to apply a custom color to several parts of a Qt GUI, using Qt designer and the main stylesheet. various aspects of the OS. 2 on Windows 10. Simply add a stylesheet to the qbushbutton itself or to his parent qwidget: qwidget. My Solution: from PyQt4 import QtGui. CSS, and QSS (Qt Stylesheet), depends on the order of declarations. You have to use the QPainter::setBrush(QBrush &) and QPainter::setPen(QPen &) methods to change the color used to draw graphics (and incidently the text color). See QAbsractScrollArea to style scrollable backgrounds. background-color: red; If several style sheets are set at different levels, Qt derives the effective style sheet from all of those that are set. Create a text file with definitions of variables. edited May 19, 2015 at 13:19. io 1. Using the following code, the text color is changed to red in QLineEdit but not in QTextEdit when the focus is got. edited May 12, 2017 at 4:48. This is called cascading. setStyleSheet (“background-color: cyan”) Argument : It takes string as argument. app = QApplication(sys. Sorted by: Reset to default. Feb 10, 2014 · Once you've defined the QSS of interest as a string, you then set the QSS on the widget in question using the setStyleSheet method. ) Jun 13, 2018 · 2. answered Jun 13, 2010 at 8:00. Code For example, we change the border to grey and the chunk to cerulean. Later declarations with the same specificity will overwrite previous declarations. QLCDNumber{color:rgb(85, 85, 255);background-color:rgb(0, 170, 255);} It is successful for background color not for digit color. QToolButton{ background: red; } But I need to change some QAction background to red and some to green. :) – Aug 18, 2015 · The setPlainText() is a convenience method that uses the plain text to create a QTextDocument rich text representation of it. Any changes to the stylesheet will override the painter. name () + ' }') Later in the program, the background color of the widget must be fetched (using . Feb 21, 2022 · first, a QLineEdit that has a stylesheet (assume not accessible or changeable) that sets the color of the text to some color (e. In both cases, the background is OK. self. pyqt. If you want to change the foreground color only of Radio button you may need to provide alpha background color for that button. Some people said, that can get my adding style sheet in Qt-Designer. 0. 6. If you like to color the background of the headerView: tableWidget->verticalHeader ()->setStyleSheet ("QHeaderView::section { background-color:blue }"); – OnWhenReady. If you want yellow backgrounds for mandatory fields, red text for potentially destructive push buttons, or fancy check boxes, style sheets are the answer. For context, I am checking a variable every 20sec with a function call. What I have is this: Notice the 17th item which has tick over the number 17. . palette, true, text(), QPalette::Text);@ I check source code - Qt use QRenderRule to draw, but this is internal class. setStyleSheet(stylesheet) This works, however it colors all headers simultaneously without me being able to change the color of an individual header. QLabel it's change font for all form/windows. setStyleSheet("QListWidget::item:selected {color: red; border: 2px solid black; font: bold;}") It does make the text color of the selected items red and it does add the border, but it doesn't make the font bold (I also tried italic and also tried Mar 24, 2016 · self. I want to change a color of certain tab (page) of QToolBox like this. How can I get colors from stylesheet Cascading. horizontalHeader(). setStyleSheet('#of_esq {color: green;}') Jul 25, 2019 · What I also want to do is something like the fusion style offer, if my header if only half filled, the text will be black and white to contrast with the background. qApp->setStyleSheet ("QToolTip { color: #ffffff; background-color: #000000; border: 0px; }"); 3. Edited only text color. setStyleSheet ( '* { background-color: '+ QColor. _qdatetimeedit-widget: See QSpinBox. I know I can give my widget an ID and only use that, but since I allow my users to skin the application using Feb 8, 2014 · QLabel { background: black; color: white; } This works fine until I add text with an embedded URL and set the Qt::TextFormat to Qt::RichText. This is a road of pain as if to be used as a Mainwindow it will show some of its fake nature in. It has some animation demo's yes, but none describing a color fade. Mar 21, 2014 · I had the same experience with C++; in Qt. This delegate will check the foreground color role of the item. I've tried both. So the only solutions is to. Vadi2. I have tried to apply the stylesheet that you suggested and I got the following result: Changing your example to the following CSS: QGroupBox {. I've tried font, font-weight, font-style, and nothing seems to change the font to bold Apr 29, 2015 · 2. QToolBar: Supports the box model. background-color: yellow; Feb 25, 2019 · I am new to Qt. color: #aaa; } The second clause uses a Descendant Selector which in this case means "any QLabel that is a descendant of a QMessageBox including children and Jun 18, 2019 · In QC Designer, click on the QLineEdit box and in the properties, enable "autoFillBackground". I was wondering if it's possible to set the placeholder to a gray color and the text to another color. objectName()) The result, again, depends on your operating system: windowsvista. Sample code: Jan 19, 2023 · If you consider the above, both the print statements will return the same value: changing color doesn't change styleSheet. 0. Next, select the Palette property and in the pop up window, change the Text color to white. Improve this answer. However, QSS supports only a limited number of rules in comparison with CSS. QDialog { border-image: url(':/images/image') 0 0 0 0 stretch Jun 7, 2017 · Thanks a lot @Vinod-Kuntoji. h" #include &lt;QLineEdit&gt; Oct 12, 2016 · not really possible in any platform neutral way. Apr 4, 2014 at 22:50. 42. Use the QTextCharFormat::setForeground to set the color. Use at least 8 pixel margin around text elements. Aug 20, 2015 · Stylesheet issue - setting color property in the :focus state. giuspen. Creating a stylesheet selector relying on a dynamic property, e. Oct 4, 2018 · By that thinking, then when the radiobutton is selected, the color shouldn't change, but it does. By default, the arrow is placed in the center of the contents rectangle of the drop-down subcontrol. First, we would use the following application-wide style sheet: *[mandatoryField="true"] { background-color: yellow } This means that every widget whose mandatoryField Qt property is set to true would have a yellow background. In addition to the above recommendations, we also suggest a few simple guidelines regarding text and headers: Use a sans-serif system font at 24 pt, Bold, for headers. from PyQt4 import QtCore. 2. _qdateedit-widget: See QSpinBox. If several style sheets are set at different levels, Qt derives the effective style sheet from all of those that are set. setStyleSheet() method, this will add the background color to the label, it is same like designing the CSS style sheet. Dijkstra. Apr 4, 2014 at 22:57. Action performed: It changes the background color of the label. I think you can change the text color by calling the method: void QGraphicsTextItem::setDefaultTextColor ( const QColor & col ); You have an example here. argv) print (app. Sep 8, 2015 · 3. 7. For example, the color red corresponds to a triplet of "#FF0000" and a slightly transparent blue to a quad of May 12, 2017 · 1 Answer. It would, but I don't want to do it for the entire application. wrote on 16 Sep 2018, 04:18. It can be specified in a number of ways: By a SVG color name, such as "red", "green" or "lightsteelblue". #3. answered Sep 26, 2013 at 10:08. Share. I want the chosen item to have bold text and no tick. The problem is that you can have multiple style sheets on multiple levels and Qt will combine them in the proper way. answered Jun 5, 2020 at 16:53. W. @font-size: 24pt;@ and @font: 24pt;@ but neither seems to work (I've also tried variations such as px that don't work either). ~E. Then use a stylesheet to change the color of the cursor by using the color property. urgent, makes it possible to highlight parts of the user interface in a very dynamic manner. #include "mainwindow. Changes made by a style sheet are propagated. You can use a FontLoader to load the font or see if you have a system font that has a checkmark. @QFont font; font. By a hexadecimal triplet or quad in the form "#RRGGBB" and "#AARRGGBB" respectively. answered Aug 20, 2016 at 18:07. Aug 12, 2014 · Yes thats the question, If we can mix stylesheet properties and QFont/QPalette. To set the style sheets for a widget, you call its Mar 14, 2017 · Like you said, it's impossible to change the color via the stylesheet, but there's a QVariantMap that can be set and gave to the function as an argument to change the color of the icon depending of the state of the button. setStyleSheet(stylesheet) This does not work, as a single header item does not support Feb 8, 2017 · In Qt Designer, click on the window somewhere so that it's the current object, go to palette about 1/3 the way down in the Property Editor and "window text" is right at the top. Table. setStyleSheet('QGroupBox {color: green;}') You could also set the stylesheet on of_esq 's parent and reference the widget by name using the css id selector ( #) self. Introduction to the Qt Style Sheets. QTimeEdit: See QSpinBox. g. The color of the placeholder text can be set using the placeholder-text-color property. It clearly states that you try to color the header. That is mostly due to the fact that strings are immutable types (so, styleSheet can never be affected by any change in color), but also because there's no dynamic relation between color and styleSheet. Feb 24, 2011 · Here's how you can change the style of the text, in this example I make the dialog grey and the text off-white: QMessageBox {. Depending on the value of section (header index starting at zero) you can individually style the header items. 1: make a fake windows widget and draw caption and implement dragging etc. background: blue; border-radius: 5px; color: black; Also I know how to change a palette of each QWidget (via setPalette or StyleSheet like suggested here ). E. This works, but it is the colour of the text and buttons I need to modify because my background is black. mzimmers. style(): import sys. #d9fffb : light blue #000000 : black Mar 6, 2023 · To find out which default style is applied to an existing application, you can access the objectName() via app. There is no way to query the combined style Jun 22, 2012 · myCheckbox->setStyleSheet("QCheckBox:unchecked{ color: red; }QCheckBox:checked{ color: red; }"); Setting both states changed the colors for me. Jan 3, 2012 · QColor. ttf" in my . Open both files and for each variable in definition file change its occurrence in qss file with the value (string) from the definition file. I have some QActions in my QToolBar. But when I try to set the font-family with something like: myTextEdit->setStyleSheet ("QTextEdit {font-family: "Droid Sans"}"); Jul 24, 2022 · The QStyle of the button or label will have parsed the style sheet already and will give you the proper colors (if you can get the colors from the QStyle, which I didn't find quickly). Qt CSS syntax allows you to select children for the CSS rules ( Qt doc ), but it is based on the parentship of QObjects not in which class contains pointers to the QLabel. , black) How can I get the color of the text in the QLineEdit, and set it as the color in the QLabel Dec 29, 2016 · 7. ui. Does anyone know the reason why? If several style sheets are set at different levels, Qt derives the effective style sheet from all of those that are set. For instance, adding the following rule to the stylesheet above will given any QLineEdit with the urgent property set to true red text on a yellow background. If you're only interested in setting the background color, a simple stylesheet will probably suffice: yourQTabWidget->setStyleSheet("QTabBar::tab { background-color: #FF0000; }"); A -stylesheet command line option Jun 4, 2019 · First of all, you would have to define your own class inheriting the class on which you want property to be set. like this: QVariant For example, we change the border to grey and the chunk to cerulean. 5. This is the code for Arial : QLabel { color: white; font: 10pt "Arial"; } Oct 20, 2013 · Hi, I want to change my application looks so that the background is black. The link displays as the default dark blue, which is hard to read on a dark background. style(). Using stylesheet should do it. However, there is a solution if you are willing to compromise, using QPalette and fusion style as followed. Raydel Miranda. QTreeView::item:selected {color: red} I want to change only the color of the first column when the item is selected. This works for the selected cells like having a selected row. 716 3 3 silver badges 14 14 bronze badges. Jul 9, 2012 · background-color will set background color of the items in row and selection-color will set the text color because when the row is selected then if text are present in the row then it might become unreadable due to color so setting proper text color is important. qt. You can find the whole list of available colors in the "Recognized color keyword names" chapter of the SVG 1. For example, the following style sheet specifies that all QLineEdit s should use yellow as their background color, and all QCheckBox es should use red as the text color: Sep 11, 2017 · I have a file with Qt stylesheet information to change the look of my application. It seems there are some oddities like this in the stylesheet and palette system so keep your eyes out for them and try a few different things (i. of_esq. Apart from some inconsistencies with your code example setting the background color and text color of a QPushButton works just fine with: setStyleSheet('QPushButton {background-color: #A3C1DA; color: red;}') Example (using PySide): from PySide import QtGui. Jan 13, 2022 · QHeaderView::section { background-color: rgb(71, 153, 176); color: white; height: 35px; width: 150px; font: 14px; } Note: font sizes should theoretically be set in points, so consider changing to font: 14pt. QTableWidget::item { color: red; } But because the API is on the QTableWidget level (rather than QTableWidgetItem level), I find it impossible to target individual cells. Oct 5, 2012 · 2. second, QLabel that has a default text color (e. If this foreground color is not the default WindowText color of the palette, that means a specific color is set and this specific color is used for the highlighted text color. horizontalHeaderItem(0). setColor(QtGui. You can use QTextCharFormat to set the color of the text in your QPlainTextEdit. Apr 3, 2019 · 2. (Really cool for a QProgressBar) I've currently tried to do this by testing with some CSS example but I don't really know how CSS works and it seems to be different into Qt stylesheet. Dec 19, 2018 · the styleVariant way did not work at all, nothing happened! QTextEdit[styleVariant="1"] { font: italic bold 30px serif; background-color: white; color: black; } QTextEdit { background-color: white; color: black; } Oct 20, 2013 · Hi, I want to change my application looks so that the background is black. What you have to do is reimplement QAbstractTableModel::headerData() . The background color is dark grey so I wanted to make the user's text to be in white but I Apr 15, 2016 · 1. You can use stylesheet. setStylesheet(" color: red;"); If debugging is the process of removing software bugs, then programming must be the process of putting them in. QtWidgets import QApplication. QApplication([]) Feb 1, 2018 · "La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours" ~Napoleon Bonaparte On a crusade to banish setIndexWidget() from the holy land of Qt The default is some sort of tick which is painted over text. One solution would be using this: #MainWindow{ background-color: #334422; } #first_label{ background-color: #334422; } #second_label{ background-color: #334422; } But it is not scalable, what if I want to change that color again? Mar 26, 2020 · In order to add border to the Label we will use label. stylesheet += "background-color:"+highlight+"}" table->setStyleSheet(stylesheet); The selection color does the one item that is selected while the item focus will color the rest of the items that should be highlighted. See setFontWeight for bold, setFontItalic for italic and setFontUnderline for underline. QProgressBar { border: 2px solid grey; border-radius: 5px; } QProgressBar::chunk { background-color: #05B8CC; width: 20px; } This leaves the text-align , which we customize by positioning the text in the center of the progress bar. selectors, pseudo-states, etc. I've just found the next strange issue working with style sheets. For example, the QML example below uses the checkmark unicode as the text property. Use simple format like this: 2. V. 9 PySide6 QT Creator: 7. Setting the font size with: myTextEdit->setStyleSheet ("QTextEdit {font-size: 12pt}"); works as expected. I am currently learning my way around Qt and need some help. I would like to use it in my Qt Style Sheet for all QLabels. Dec 17, 2014 · checkBox->setStyleSheet("color: blue; font-family: Arial; font-size: 14pt;"); But it resembles crutches, because I need to define here all differences between mine and system styles [quote author="SGaist" date="1418850599"]To add to adutzu89 , when using style sheet, you should set all customization you'd like in there. 2k 3 43 64. setFamily ("Arial"); Jun 16, 2022 · I can't edit colors for progress bar in my app. 14. I searched in google, they suggest to change the groupbox title like: QGroupBox::title { background-color: transparent; subcontrol-position: top left; /* position at the top left*/ padding: 2px 13px; } Oct 29, 2014 · 7. With that in mind, I would like all my labels, text, etc, to be white by default Dec 6, 2017 · 1. It works for every QActions in QToolBar. Nov 2, 2015 · The header text changes color correctly but the background will not change from the default. If the variable is set, a message box appears. Nov 15, 2017 · 2. QWidget) The color type refers to an ARGB color value. Jun 25, 2011 · 1. Here's what I've tried: #include "mainwindow. 0 specification. Vaidotas Strazdas. Jul 31, 2010 · 11. The command paint. I've tried customising it via a stylesheet such as: a { color: white; } QLabel!visited { color: white; } Apr 25, 2018 · @SGaist I realized that if I change the color property in the stylesheet it will also change the placeholder text. Jun 1, 2021 · You are on the right track. QPalette. Or in worst case to just shifth the text to the right, to make the tick visible properly. answered Jul 31, 2010 at 9:26. for example: QRadioButton{ color: rgb(255, 255, 255); background-color: rgba(255, 255, 255, 0);} This will give you white color with transparent background. When conflicts arise, the widget's own style sheet is Apr 29, 2015 · You can use QWidgetAction instead of QAction, and define your QLabel with text and stylesheet you want, and then assign it to your QWidgetAction. Within that file, I set the way a QToolTip is displayed like this: QToolTip { border: 1px solid rgb(64,255,0); background: rgb(255,255, 127); border-radius 3px; padding: 2px; color: rgb(67, 67, 67); } Recommended fonts and font sizes. Text, {your QColor}), and the font use QFont. I figured out how to change a style of every tabs independently like this (StyleSheet): QToolBox::tab {. Style sheets let you perform all kinds of customizations that are difficult or impossible to perform using QPalette alone. Stylesheet "" is set at the same time as the property in the code. setBrush(QBrush(QColor(0,255,0)) will set the fill color to green. SGaist Lifetime Qt Champion. QDateTimeEdit. For example, we change the border to grey and the chunk to cerulean. Use a sans-serif system font at 14 pt, Regular, for body text. pyhton: 3. See Customizing QComboBox for an example. The relevant values for foreground (=text color) and background in Qt::ItemDataRole are Qt::BackgroundRole and Qt::ForegrondRole. 3. With that in mind, I would like all my labels, text, etc, to be white by default The color and background of selected text is styled using selection-color and selection-background-color respectively. template<typename T> inline QVariant TableModel<T>::headerData(int section, Qt::Orientation orientation, int role) const { // Jul 18, 2017 · QMessageBox::question, QMessageBox::warning, QMessageBox::critical, QMessageBox::Information { /* Base Text Size & Color */ font-size:12px; color:#ffffff; } If I try QmessageBox . But keep in mind that you have to tweak the width and height of your QLabel, in order for it to look the same as QAction does. ), as well as any style sheet set on the QApplication. Qt Style Sheets or QSS is very much similar to Cascading Style Sheets (CSS) for the web. 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 5. border: 1px solid gray; border-color: #FF17365D ; margin-top: 27px ; font-size: 14px ; border-bottom-left-radius: 15px ; Jan 23, 2013 · 8. For example, the following style sheet specifies that all QLineEdit s should use yellow as their background color, and all QCheckBox es should use red as the text color: Nov 26, 2009 · Answering myself, here is what I ended up doing : a delegate. setStyleSheet("QPushButton:checked { background-color: red; }") This will set the background color to red when the QPushButton is checked. So, in order to have the pressed state take precedence, simply move it below the hover state. h". These methods set the corresponding attribute of the selected text. May 14, 2014 · As mentioned in the title, I want to set the font-family of a QTextEdit with the use of a stylesheet. I've tried several things now, but do you know of an example that fades the background-color or border-color of a QToolButton? Or makes it fade between two CSS states Thanks for 2. If you're setting the stylesheet directly on the of_esq widget, you could just do (assuming it has no child QGroupBoxes. Feb 15, 2018 · 3. Aug 7, 2014 · I've run into a problem using stylesheets with QTextBrowser. Currently I set the stylesheet, so the entire row changes the text color to red when the item is selected. setPen(QPen(QColor(255,0,0)) will set the outline color to red and paint. #include <QStyleFactory>. QAction doesn't have any stylesheets, so I am trying to use QToolBar stylesheet to change QAction background color. from PyQt6. edited Aug 17, 2015 at 23:45. 1,375 3 20 34. e. Apr 8, 2019 · Changing the color of text in all cells is as simple as using this stylesheet. and 3. musicamante. So the next logical step would be: self. This CSS will only apply to QLabel objects which are children or grand children of a YourContainerClassWidget object. So if I set the same value using stylesheet then it works, but in this case I need to write a css file dynamically and force it to be used only for the specific module that uses it within the application. Style sheets can be set on the QApplication, on parent widgets, and on child widgets. 1. QDateEdit. name () which returns something like '#00ff00' which would then undergo simple string manipulation to be set as a style sheet for a widget. Jun 1, 2017 · 1. I've tried this to change only one QAction. This is my stylesheet: . end how add background if I use global setting for all. For example, the following style sheet specifies that all QLineEdit s should use yellow as their background color, and all QCheckBox es should use red as the text color: Jun 28, 2012 · myDock->setStyleSheet("QDockWidget { font: bold }"); But I can't understand why the following code doesn't work: myDock->setStyleSheet("QDockWidget::title { font: bold }"; Even if I use more complicated style sheet, every parameter of it has effect except for font: bold: Jul 27, 2023 · I'm using Qt 6. sz sq jx rk vu pr cd yk co vs