QTabWidget隐藏边框，QWebView/QWebFrame隐藏滚动条

QTabWidget隐藏边框：

setDocumentMode(true);

QWebFrame隐藏滚动条:

setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff);//竖向
setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);//横向

QWebView隐藏滚动条：其实就是隐藏掉QWebView里的QWebFrame的滚动条。

this->mainFrame()->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff);
this->mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);