Qt C++ QStyledItemDelegate子类-鼠标悬停在画图上

#include <QStyledItemDelegate>
#include <QStylePainter>
#include <QMouseEvent>

class CustomDelegate : public QStyledItemDelegate
{
public:
    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const override
    {
        QStyledItemDelegate::paint(painter, option, index);

        // 获取鼠标悬停状态
        bool isHovered = option.state & QStyle::State_MouseOver;

        if (isHovered) {
            // 鼠标悬停时的绘制效果
            painter->fillRect(option.rect, QColor(255, 0, 0, 100)); // 设置背景色为红色，透明度为100
        }
    }

    bool editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index) override
    {
        if (event->type() == QEvent::MouseMove) {
            QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);

            // 判断鼠标是否悬停在画图上
            bool isHovered = option.rect.contains(mouseEvent->pos());

            if (isHovered) {
                // 执行鼠标悬停时的操作
                // 例如显示提示信息、改变鼠标样式等
            }
        }

        return QStyledItemDelegate::editorEvent(event, model, option, index);
    }
};