[Resolved] How can I add a column with Image into the model

[lovehouye]

Hi everyone,
I have rewrite the QDirModel by myslef. I want to add a column to show some images.

In the QDirModel, there is only 'Name', 'Size', 'Type', 'Date Modified'. And all of them are QString type.

QString name(const QModelIndex &index) const;
    QString size(const QModelIndex &index) const;
    QString type(const QModelIndex &index) const;
    QString time(const QModelIndex &index) const;
 
    case 0: return d->name(index);
    case 1: return d->size(index);
    case 2: return d->type(index);
    case 3: return d->time(index);

QString name(const QModelIndex &index) const;
    QString size(const QModelIndex &index) const;
    QString type(const QModelIndex &index) const;
    QString time(const QModelIndex &index) const;

    case 0: return d->name(index);
    case 1: return d->size(index);
    case 2: return d->type(index);
    case 3: return d->time(index);

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So, I want to know what type can I set that it can show the images in the additional column. I have tried 'QPixmap' and 'QIcon', but they are not work.

What can I do? I need your help. Thanks.

[nifei]

QVariant QDirModel::data(const QModelIndex &index, int role) const
{
    Q_D(const QDirModel);
    if (!d->indexValid(index))
        return QVariant();
 
    if (role == Qt::DisplayRole || role == Qt::EditRole) {
        switch (index.column()) {
        case 0: return d->name(index);
        case 1: return d->size(index);
        case 2: return d->type(index);
        case 3: return d->time(index);
// you can return icons if the role == Qt::DecorationRole
//or else you can return icons if the role == Qt::DecorationRole and the index is in the column you want to present icons
        default:
            qWarning("data: invalid display value column %d", index.column());
            return QVariant();
        }
    }
 
    if (index.column() == 0) {
        if (role == FileIconRole)
            return fileIcon(index);
        if (role == FilePathRole)
            return filePath(index);
        if (role == FileNameRole)
            return fileName(index);
    }
 
    if (index.column() == 1 && Qt::TextAlignmentRole == role) {
        return Qt::AlignRight;
    }
    return QVariant();
}

QVariant QDirModel::data(const QModelIndex &index, int role) const
{
    Q_D(const QDirModel);
    if (!d->indexValid(index))
        return QVariant();

    if (role == Qt::DisplayRole || role == Qt::EditRole) {
        switch (index.column()) {
        case 0: return d->name(index);
        case 1: return d->size(index);
        case 2: return d->type(index);
        case 3: return d->time(index);
// you can return icons if the role == Qt::DecorationRole
//or else you can return icons if the role == Qt::DecorationRole and the index is in the column you want to present icons
        default:
            qWarning("data: invalid display value column %d", index.column());
            return QVariant();
        }
    }

    if (index.column() == 0) {
        if (role == FileIconRole)
            return fileIcon(index);
        if (role == FilePathRole)
            return filePath(index);
        if (role == FileNameRole)
            return fileName(index);
    }

    if (index.column() == 1 && Qt::TextAlignmentRole == role) {
        return Qt::AlignRight;
    }
    return QVariant();
}

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[lovehouye]

QVariant QDirModel::data(const QModelIndex &index, int role) const
{
    Q_D(const QDirModel);
    if (!d->indexValid(index))
        return QVariant();
 
    if (role == Qt::DisplayRole || role == Qt::EditRole) {
        switch (index.column()) {
        case 0: return d->name(index);
        case 1: return d->size(index);
        case 2: return d->type(index);
        case 3: return d->time(index);
// you can return icons if the role == Qt::DecorationRole
//or else you can return icons if the role == Qt::DecorationRole and the index is in the column you want to present icons
        default:
            qWarning("data: invalid display value column %d", index.column());
            return QVariant();
        }
    }
 
    if (index.column() == 0) {
        if (role == FileIconRole)
            return fileIcon(index);
        if (role == FilePathRole)
            return filePath(index);
        if (role == FileNameRole)
            return fileName(index);
    }
 
    if (index.column() == 1 && Qt::TextAlignmentRole == role) {
        return Qt::AlignRight;
    }
    return QVariant();
}

QVariant QDirModel::data(const QModelIndex &index, int role) const
{
    Q_D(const QDirModel);
    if (!d->indexValid(index))
        return QVariant();

    if (role == Qt::DisplayRole || role == Qt::EditRole) {
        switch (index.column()) {
        case 0: return d->name(index);
        case 1: return d->size(index);
        case 2: return d->type(index);
        case 3: return d->time(index);
// you can return icons if the role == Qt::DecorationRole
//or else you can return icons if the role == Qt::DecorationRole and the index is in the column you want to present icons
        default:
            qWarning("data: invalid display value column %d", index.column());
            return QVariant();
        }
    }

    if (index.column() == 0) {
        if (role == FileIconRole)
            return fileIcon(index);
        if (role == FilePathRole)
            return filePath(index);
        if (role == FileNameRole)
            return fileName(index);
    }

    if (index.column() == 1 && Qt::TextAlignmentRole == role) {
        return Qt::AlignRight;
    }
    return QVariant();
}

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Oh, you're so kind and it works perfect.
Thanks very much.