The TreeView is used to display information hierarchically.
To open or close nodes :
•Double-click on a folder, or click once on the +/- button to its left.
•You can also open/close a node using the LEFT/RIGHT keys.
Many of the TreeViews in Q++ allow you to move individual nodes, or a node and all its sub-nodes, using drag and drop. In those cases, the rules usually allow for the moving of folders into folders, and the moving of leaves into folders.
The dragged node is displayed thinly and the drop target and whether the drop is allowed or not is indicated as you drag a node around. In the examples below, the drop is not allowed on the left, but is allowed on the right.