Don't use hardcoded numbers to refer to columns.

src/gui/torrentcontentfiltermodel.cpp

@@ -83,7 +83,7 @@ bool TorrentContentFilterModel::filterAcceptsRow(int source_row, const QModelInd
 
 bool TorrentContentFilterModel::lessThan(const QModelIndex &left, const QModelIndex &right) const {
   switch (sortColumn()) {
-  case NAME: {  // PropColumn::NAME
+  case TorrentContentModelItem::COL_NAME: {
     QString vL = left.data().toString();
     QString vR = right.data().toString();
     TorrentContentModelItem::ItemType leftType = m_model->itemType(m_model->index(left.row(), 0, left.parent()));

src/gui/torrentcontentmodel.cpp

@@ -122,7 +122,7 @@ bool TorrentContentModel::setData(const QModelIndex& index, const QVariant& valu
     if (!index.isValid())
         return false;
 
-    if ((index.column() == 0) && (role == Qt::CheckStateRole)) {
+    if ((index.column() == TorrentContentModelItem::COL_NAME) && (role == Qt::CheckStateRole)) {
         TorrentContentModelItem *item = static_cast<TorrentContentModelItem*>(index.internalPointer());
         qDebug("setData(%s, %d", qPrintable(item->name()), value.toInt());
         if (item->priority() != value.toInt()) {
@@ -182,14 +182,14 @@ QVariant TorrentContentModel::data(const QModelIndex& index, int role) const
 
     TorrentContentModelItem* item = static_cast<TorrentContentModelItem*>(index.internalPointer());
 
-    if ((index.column() == 0) && (role == Qt::DecorationRole)) {
+    if ((index.column() == TorrentContentModelItem::COL_NAME) && (role == Qt::DecorationRole)) {
         if (item->itemType() == TorrentContentModelItem::FolderType)
             return getDirectoryIcon();
         else
             return getFileIcon();
     }
 
-    if ((index.column() == 0) && (role == Qt::CheckStateRole)) {
+    if ((index.column() == TorrentContentModelItem::COL_NAME) && (role == Qt::CheckStateRole)) {
         if (item->data(TorrentContentModelItem::COL_PRIO).toInt() == prio::IGNORED)
             return Qt::Unchecked;
         if (item->data(TorrentContentModelItem::COL_PRIO).toInt() == prio::MIXED)