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The line w.setBackgroundRole(QPalette.Base) in the code below has no effect. Why? How do I fix that?
import sys from PySide.QtCore import * from PySide.QtGui import * app = QApplication(sys.argv) w = QWidget() w.setBackgroundRole(QPalette.Base) w.show() app.exec_() 
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Show activity on this post. QWidget *widget = new QWidget(); QCheckBox *checkBox = new QCheckBox(); QHBoxLayout *layout = new QHBoxLayout(widget); layout->addWidget(checkBox); layout->setAlignment(Qt::AlignCenter); layout->setContentsMargins(0, 0, 0, 0); widget->setLayout(layout); table->setCellWidget(0, 0, widget);
ui->frame->setStyleSheet(""); ui->frame->setStyleSheet("background-color: rgb(255,255,255)");
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 : blue; }");
You need to call setAutoFillBackground(True) on the widget. By default, a QWidget doesn't fill its background.
For more information, see the documentation for the setAutoFillBackground property.
If you want to use an arbitrary background color, you need to modify the widget's palette instead:
p = w.palette() p.setColor(w.backgroundRole(), Qt.red) w.setPalette(p) you can also use setStyleSheet for example:
w.setAttribute(Qt.Qt.WA_StyledBackground, True) w.setStyleSheet('background-color: red;') If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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