Rows Do Not Appear
- Make sure the Tree Nodes array has entries.
- Call Create Tree after setting Tree Nodes from Blueprint.
- Make sure parent rows are listed before child rows.
- Use Parent ID = 0 for root rows.
Child Rows Are Missing
- Check that each child's Parent ID points to the parent's 1-based position in Tree Nodes.
- Confirm the parent row is above the child row in the array.
- Expand the parent node or call Expand Tree Item from Blueprint.
Blueprint Functions Are Hard To Access
- Select the tree widget in the Designer.
- Enable Is Variable in Details.
- Compile the Widget Blueprint.
- Use the tree variable in the Graph to call Create Tree, Expand Tree Item, Collapse Tree Item, Toggle Node Expansion, or Select Tree Item.
Custom Row Widget Is Empty
- Assign your widget to Default Row Content, Row Contents By Parent, or Row Contents By Id.
- Bind On Generate Row.
- Cast the Row Widget output to your custom row widget Blueprint.
- Set your row widget's variables from the Row value.