1 files changed, 9 insertions, 0 deletions
diff --git a/sigmodr/tree/TreeModel.cpp b/sigmodr/tree/TreeModel.cpp
index defaa218..15f8dae2 100644
--- a/sigmodr/tree/TreeModel.cpp
+++ b/sigmodr/tree/TreeModel.cpp
@@ -36,6 +36,15 @@ TreeModel::~TreeModel()
 
 QVariant TreeModel::data(const QModelIndex& index, const int role) const
 {
+    if (!index.isValid())
+        return QVariant();
+    TreeItem* item = static_cast<TreeItem*>(index.internalPointer());
+    if (role == Qt::DisplayRole)
+    {
+        if (!index.column())
+            return item->text();
+    }
+    return QVariant();
 }
 
 QModelIndex TreeModel::index(const int row, const int column, const QModelIndex& parent) const