Splitter bars divide a LabVIEW front panel window into multiple scrollable panes for flexible, professional user interface layouts.

Elements such as toolbars and status bars are specialized types of splitter bars.

Each pane acts similarly to a unique front panel, with its own sets of pane coordinates and controls and indicators on it. You can scroll each pane individually. The splitter bar separates the controls on one pane from those on another pane, yet the terminals for all controls are on the same block diagram.

Panes have hierarchy. When you create a new, blank VI, the front panel has a single pane that fills the window. The front panel owns this pane and is the pane's parent, or owning pane.

When you place a splitter bar on a pane, the splitter bar replaces the pane in the front panel object hierarchy and creates two new child panes. The front panel owns the splitter bar, and the splitter bar owns the two child panes. If you place a new splitter bar on one of the child panes, the new splitter bar replaces that pane and becomes the parent of the two new child panes. This hierarchy forms a binary tree, and the front panel owns the top pane.