各位大佬，请问
如下代码，自己写的代理，如何在第二列中插入文件名和该文件的默认图标呢？
void myItemDelegate2All::paint(QPainter * painter,const QStyleOptionViewItem & option,const QModelIndex & index) const
{
QStyleOptionViewItem viewOption(option);
viewOption.state &= ~QStyle::State_HasFocus;
myTableView2 *view = qobject_cast<myTableView2 *>(viewOption.styleObject);
QTableView::SelectionBehavior behavior = view->selectionBehavior();
QModelIndex hoverIndex = view->hoverIndex();
if (!(option.state & QStyle::State_Selected) && behavior != QTableView::SelectItems)
{
if (behavior == QTableView::SelectRows && hoverIndex.row() == index.row())
viewOption.state |= QStyle::State_MouseOver;
if (behavior == QTableView::SelectColumns && hoverIndex.column() == index.column())
viewOption.state |= QStyle::State_MouseOver;
}
if (viewOption.state & QStyle::State_HasFocus)
{
viewOption.state = viewOption.state ^ QStyle::State_HasFocus;
}
if(viewOption.state & QStyle::State_MouseOver)
painter->fillRect(viewOption.rect, QColor(180,200,220));
QStyledItemDelegate::paint(painter, option, index);
if(index.isValid())
{
painter->save();
int column = index.column();
QVariant v = index.data(column + (Qt::UserRole+1)); //获取数据
if(0 == column)
{
int id = v.toInt();
painter->drawText(option.rect, Qt::AlignCenter, QString::number(id));
}
else if(1 == column)
{
int status = v.toInt();
if(status == 1)
{
painter->drawPixmap(option.rect, m_lockedPng);
}
else if(status == 0)
{
painter->drawPixmap(option.rect, m_unlockedPng);
}
else
{
painter->drawText(option.rect, Qt::AlignCenter, "");
}
}
else if(2 == column)
{
//此处如何通过自定义的数据模型，将获取出来的QIcon文件默认图标画出来
//原本想QIcon icon = v.to--->这个怎么获取出QIcon的图标出来呢？
//文件名
QString fileName = v.toString();
painter->drawText(option.rect, Qt::AlignLeft | Qt::AlignVCenter, fileName);
}
else if(3 == column)
{
QString dateTime = v.toString();
painter->drawText(option.rect, Qt::AlignLeft | Qt::AlignVCenter,dateTime);
}
else if(4 == column)
{
QString strType = v.toString();
painter->drawText(option.rect, Qt::AlignLeft | Qt::AlignVCenter,strType);
}
else if(5 == column)
{
QString strSize;
if(v.toString() == "")
strSize = "";
else
strSize = QString("%1 kb").arg(v.toString());
painter->drawText(option.rect, Qt::AlignLeft | Qt::AlignVCenter, strSize);
}
painter->restore();
}
}
重写了数据模型，继承于QAbstractTableModel。在重写下面两个方法时，怎么在第二行将文件的默认图标和文件名一起放在呢？
QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
bool setData(const QModelIndex &index, const QVariant &value,int role = Qt::EditRole) override;
具体代码如下：
bool myTableModel2::setData(const QModelIndex &index, const QVariant &value, int role)
{
if (!index.isValid())
return false;
int nColumn = index.column();
FileRecord record = m_recordList.at(index.row());
switch (role)
{
case Qt::TextAlignmentRole:
{
return Qt::AlignLeft | Qt::AlignHCenter;
}
case Qt::DisplayRole:
{
if(nColumn == FILE_IDNO_COLUMN)
{
record.id = value.toInt();
m_recordList.replace(index.row(), record);
emit dataChanged(index, index);
return true;
}
if (nColumn == LOCK_ICON_COLUMN)
{
record.isLocked = value.toInt();
m_recordList.replace(index.row(), record);
emit dataChanged(index, index);
return true;
}
if (nColumn == FILE_NAME_COLUMN)
{
record.fileName = value.toString(); /./此处怎么将文件的默认图标和文件文件名一起放在第二列，就像windows资源管理器显示的一样，左边是默认图标，紧接着是文件名。
/./好像没有toIcon这种转换，要怎么实现呢？
m_recordList.replace(index.row(), record);
emit dataChanged(index, index);
return true;
}
if (nColumn == DATE_TIME_COLUMN)
{
record.dateTime = value.toString();
m_recordList.replace(index.row(), record);
emit dataChanged(index, index);
return true;
}
if (nColumn == FILE_TYPE_COLUMN)
{
record.fileType = value.toString();
m_recordList.replace(index.row(), record);
emit dataChanged(index, index);
return true;
}
if (nColumn == FILE_SIZE_COLUMN)
{
record.fileSize = value.toString();
m_recordList.replace(index.row(), record);
emit dataChanged(index, index);
return true;
}
}
default:
return false;
}
return false;
}
QVariant myTableModel2::data(const QModelIndex &index, int role) const
{
QVariant result;
switch (role - (Qt::UserRole + 1))
{
case 0:
result = QVariant(m_recordList[index.row()].id);
break;
case 1:
result = QVariant(m_recordList[index.row()].isLocked);
break;
case 2:
result = QVariant(m_recordList[index.row()].fileName); /./此处怎么将文件的默认图标和文件文件名一起放在第二列，就像windows资源管理器显示的一样，左边是默认图标，紧接着是文件名。
break;
case 3:
result = QVariant(m_recordList[index.row()].dateTime);
break;
case 4:
result = QVariant(m_recordList[index.row()].fileType);
break;
case 5:
result = QVariant(m_recordList[index.row()].fileSize);
break;
}
return result;
}
求助各位大佬，在线等。希望能够解决这个问题，不胜感谢！！！！
