QTabWidget 细节样式定制'>'的使用

QTabWidget#Tab1>QTabBar::tab:first
{
border-image: url(:/Default_N.png);
}
QTabWidget#Tab1>QTabBar::tab:first:hover
{
border-image: url(:/Default_P.png);
}
QTabWidget#Tab1>QTabBar::tab:first:pressed
{
border-image: url(:/Default_P.png);
}
QTabWidget#Tab1>QTabBar::tab:last
{
border-image: url(:/Apply_N.png);
}
QTabWidget#Tab1>QTabBar::tab:last:hover
{
border-image: url(:/Apply_P.png);
}
QTabWidget#Tab1>QTabBar::tab:last:pressed
{
border-image: url(:/Apply_P.png);
}