The .NET controls in the Progress Developer Studio for OpenEdge Toolbox can be encapsulated into a common container, the ABL User Control. The ABL User Control combines the functionality of one or more controls, with specific properties and behaviors, into a single reusable unit. After you create an ABL User Control, you can add it to the Toolbox, where it is available to all of the forms in your project.
You will implement an ABL User Control in
Adding LeftBar.cls to the project.
