The best and recommended way is to use Qt Style Sheet. Docs: Qt 5 Style Sheet, Qt 6 Style Sheet. To change the text color and background color of a QLabel, here is what I would do : QLabel* pLabel = new QLabel; pLabel->setStyleSheet("QLabel { background-color : red; color : …

Mar 16, 2025 · Sets the background color for the entire text within a QTextEdit widget. Syntax. void QTextEdit::setTextBackgroundColor (const QColor & color); Parameters. color: A QColor object specifying the desired background color. You can create a QColor object using various methods, such as:

The background of any QAbstractScrollArea (Item views, QTextEdit and QTextBrowser) can be set using the background properties. For example, to set a background-image that scrolls with the scroll bar:

Jul 8, 2016 · If you want to change only the color of the entire viewport background (except scrollbar), must specify a selector. like this: ui->plainTextEdit->setStyleSheet("QPlainTextEdit {background-color: #rrggbb;}") And if you want to set only the text background color, like this:

By modifying the properties of the returned QBrush, you can control the visual appearance of the text background. Here are some common ways to use it: Set a solid background color: QTextFormat format; format.setBackground(Qt::lightblue); Create a gradient background:

Jul 12, 2019 · If your goal is set the color of all text simply, you can use Qt StyleSheet! The following example changes the background color to black and text color to red: QPlainTextEdit *edit = new QPlainTextEdit(this); //StyleSheet here edit->setStyleSheet("QPlainTextEdit {background-color: black; color: red;}"); edit->appendPlainText("HELLO!");

You can use the background-color property for Qt::SolidPattern, Qt::RadialGradientPattern, Qt::LinearGradientPattern and Qt::ConicalGradientPattern. The other patterns are easily achieved by creating a background image that contains the pattern.

Jun 25, 2018 · I would like to know if there is any way to change a text color depending on the background color. I mean by that, if my background is black I want the text to be white if is white I want the text to be black. Here is an example where it invert the color. But just a switch to the most readable color would be enough.

Apr 26, 2025 · The Text.color property in Qt is used to set or retrieve the color of the text within a text-based widget. This color can be applied to various elements, including labels, buttons, text fields, and more.

Mar 25, 2010 · is there a way to change the background color of a QTextBlock in a QTextDocument without using a subclass of QAbstractTextDocumentLayout. I have tried many ways and the effects are null. I am trying from the textCursor() method of a QPlainTextEditor and it seems practically everything is const.