qt绘制样式

			 painter->save();

		 // 获取单元格矩形区域
		 QRect rect = option.rect;

		 // 绘制背景
		 painter->fillRect(rect, option.palette.base());

		 // 绘制边框
		 painter->setPen(option.palette.color(QPalette::Mid));
		 painter->drawRect(rect.adjusted(0, 0, -1, -1)); // 边框向内缩小1px

		 // 绘制文本
		 QString text = index.data().toString();
		 QRect textRect = rect.adjusted(5, 0, -20, 0);  // 文字区域，右侧留空给箭头
		 painter->setPen(option.palette.color(QPalette::Text));
		 painter->drawText(textRect, Qt::AlignVCenter | Qt::AlignLeft, text);

		 // 箭头的位置和大小（相对于原生下拉框样式）
		 QRect arrowRect = QRect(rect.right() - 20, rect.top() + rect.height() / 4, 15, rect.height() / 2);

		 // 设置箭头绘制选项
		 QStyleOption arrowOption;
		 arrowOption.rect = arrowRect;
		 arrowOption.palette = option.palette;
		 arrowOption.state = QStyle::State_Enabled;

		 // 使用 QStyle 绘制下拉箭头，确保它与原生 QComboBox 的箭头一致
		 QApplication::style()->drawPrimitive(QStyle::PE_IndicatorArrowDown, &arrowOption, painter);


		 painter->restore();

if (event->type() == QEvent::MouseButtonPress) {
        QMouseEvent* mouseEvent = static_cast<QMouseEvent*>(event);
        if (mouseEvent->button() == Qt::LeftButton) {
            // 让表格进入编辑模式
            QAbstractItemView* view = qobject_cast<QAbstractItemView*>(parent());
            if (view) {
                view->edit(index); // Use 'view' here instead of 'view_'
            }
            return true;
        }
    }
    return QStyledItemDelegate::editorEvent(event, model, option, index);