Qt - Creating smooth rounded corners of a widget

Question

I have tried creating a smooth rounded corners of a widget using method described below:

1. Create a widget with Qt::Window | Qt::FramelessWindowHint and Qt::WA_TranslucentBackground flag;
2. Create a QFrame inside of a widget;
3. Set a stylesheel to QFrame, for example:

border: 1px solid red;
border-radius: 20px;
background-color: black;

I was able to attain the smooth rounded corners but the widget is "window" type so i am not able to position the widget according to other widgets. Can we attain the complete transparency of a widget by not making the widget as "window" type?

Answer 1

Your question is quite unclear. It sounds to me like this is a widget you want to add to a layout. If you want a widget with rounded corners, just use a QFrame and set a style-sheet to it:

myFrame->setStyleSheet(".QFrame{background-color: red; border: 1px solid black; border-radius: 10px;}");

There is no need to create a widget that contains a QFrame. Just use QFrame directly.