QComboBox stylesheet样式表

效果如下：

QComboBox {
        border-radius: 3px;
        padding: 1px 10px 1px 5px;
        border: 1px solid #636363;
}

QComboBox::drop-down {
        subcontrol-origin: padding;
        subcontrol-position: top right;
        width: 15px;
        border-left-width: 1px;
        border-left-style: solid;
        border-top-right-radius: 3px;
        border-bottom-right-radius: 3px;
        border-left-color: #636363;
}

QComboBox::down-arrow,QDateEdit::down-arrow {
        image: url(:/icons/array_down.png);
}

/*去掉item的虚线框*/
QComboBox QAbstractItemView {
        outline: 0px;
}

QListView::item:selected {
        color: #F0F0F0;
        background: qlineargradient(spread:pad, x1:0, y1:0, x2:0, y2:1, stop:0 #4D4D4D, stop:1 #292929);
}

QListView::item:hover {
        color: #F0F0F0;
        background: qlineargradient(spread:pad, x1:0, y1:0, x2:0, y2:1, stop:0 #636363, stop:1 #575757);
}

QListView::item {
        padding: 5px;
        margin: 0px;
        height:30px;
}

QComboBox还得设置一下，否则Item的高度不会变。

QStyledItemDelegate *itemDelegate = new QStyledItemDelegate();
ui->comboBox->setItemDelegate(itemDelegate);