Changing the color of a QFrame in QT

Question

I have set the color of my main window in QT to be grey.

ui(new Ui ::MainWindow)
ui-> setupUi(this)
this->setStyleSheet("background-color: grey;");

I have tried multiple ways to set the color of the QFrame, however it takes on the default grey color that I have set. One way I tried is below.

ui->frame->setStyleSheet("color:rgb(255,255,255)");

I have tried to change the color of the QFrame by using the setStyleSheet method but no matter which color I assign it remains grey. I have tried setting the background, border, and color. Is there any way to do this that I am overlooking?

Answer 1

You need to set the background color of the QFrame.

Set the QFrame's style sheet to the following:

"background-color: rgb(255, 255, 255);"

Answer 2

For Python (PyQt) users:

frame = QFrame(self)
frame.setStyleSheet('background-color: rgb(50,50,50)')  

Answer 3

Set a MainWindow (not the QFrame) StyleSheet like this:

QMainWindow{
   background-color: gray
}
QFrame { 
   border: 5px solid black 
} 

This worked for me:

mainwindow->setStyleSheet("QMainWindow{background-color: gray} QFrame { border: 5px solid black } ");

Answer 4

This troubled me quite some time. Before setting the actual stylesheet unset it first:

    ui->frame->setStyleSheet("");
    ui->frame->setStyleSheet("background-color: rgb(255,255,255)");

For more customisation options have a look at https://doc.qt.io/qt-5/stylesheet-examples.html and for larger projects you might want to think about setting up global stylesheets for your app.

Answer 5

这对我有用：

ui->frame->setStyleSheet("background-color: rgb(251, 255, 206);");