为QWebView设置透明背景

Question

I am trying to set transparent background to a QWebView element.

+---------------------------+
| x | Window title          | <<< Hidden borders and title bar
+---------------------------+     view->setWindowFlags(Qt::FramelessWindowHint);
|                           |
|     ******************    |   
|    ********************<--|------- This is the HTML side (a rectangle with
|     ******************    |        rounded corners)
|                         <-|-- with transparent background that must
+---------------------------+   remain transparent for the desktop window

I searched about how can I set the transparent background for the webview and I found this code on all places:

QPalette pal = view->palette();
pal.setBrush(QPalette::Base, Qt::transparent);
view->page()->setPalette(pal);
view->setAttribute(Qt::WA_OpaquePaintEvent, false);

The code above doesn't work properly. This is how my window does look:

So, the issue is that the gray part MUST be transparent. How can I solve this?

I use the following code to undecorate the window.

view->setWindowFlags(Qt::FramelessWindowHint);

Answer 1

This works for me :

view->setStyleSheet("background:transparent");
view->setAttribute(Qt::WA_TranslucentBackground);