To create a split panel (a panel with a movable splitter bar):
In Document Designer, drag a Split Panel object from the component toolbar onto the content area.
Select a horizontal or vertical splitter bar from the Orientation radio button group.
Optional: In the Sizing group, select One-Touch Expandable to add controls to the splitter bar.
The Splitter bar is the slider that divides the split panel. When the One-Touch Expandable option is selected, two arrow controls move the splitter bar in opposing directions with one click.
Optional: In the Background Images group, click Left/Right or Top/Bottom, to display the Select Graphic dialog box for that half of the Split Panel.
You can set a color for the specified half of the split panel, or load a background image in it. See Selecting Graphics.