bool UserMainWindow::eventFilter(QObject *watched, QEvent *event)
{
if(watched == ui->close_btn)
{
if(event->type() == QEvent::HoverEnter)
{
ui->close_btn->setStyleSheet("border-image:url(:/images/close2.png);");
return true;
}
else if(event->type() == QEvent::Leave)
{
ui->close_btn->setStyleSheet("border-image:url(:/images/login_close.png);");
return true;
}
else if(event->type() == QEvent::MouseButtonPress)
{
ui->close_btn->setStyleSheet("border-image:url(:/images/close1.png);");
}
}
return QMainWindow::eventFilter(watched, event);
}
这个地方注意返回值,首先要返回true,在最后的返回值中,必须要返回它的父类的事件过滤器,我这里是mainwindow也就是QMainwindow::eventFilter
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