Qt使用StyleSheet悬停时加宽QScrollBar [英] qt widen QScrollBar when hover using StyleSheet

问题描述

我正在尝试使用自定义样式表更改垂直QScrollBar的宽度

I'm trying to change the width of a vertical QScrollBar with a custom stylesheet like

QScrollBar:vertical 
{
     border: 2px solid grey;
     background: #32CC99;
     width: 10px;
     margin: 22px 0 22px 0;"
}
QScrollBar:vertical:hover { 
     background: red; 
     width: 25px ;
}

它不起作用.我有没有做错什么?我们不能在运行时更改小部件的宽度吗?

It doesn't work. Did I make any mistake? Can't we change the width of widget in run-time?

推荐答案

我认为没有办法通过单独使用样式表来做到这一点.

I don't think there is a way of doing this by using the stylesheets alone.

您可以创建自己的滚动条并覆盖 enterEvent 和 leaveEvent 并在那里更改样式表.

You could create your own scrollbar and override the enterEvent and leaveEvent and change the stylesheet there.

您还可以在现有的滚动条上安装事件过滤器(您可以使用 QAbstractScrollArea::verticalScrollBar() 函数)并侦听相同的事件并在那里更改样式表.

You could also install an event filter to your existing scrollbar (you can get your scrollbar by using the QAbstractScrollArea::verticalScrollBar() function) and listen to the same events and change the stylesheet there.

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