The AppBuilder creates a default name (OCX name) for the ActiveX control instance when you first insert it into the design window. (This is the name defined by the control vendor.) You can change this name in the AppBuilder through the design time Name property. The AppBuilder identifies the control instance by both the control-frame name and the OCX name, rather than the OCX name alone. Because the control-frame name is always unique, the control-frame/OCX name pair is always unique.

If you do decide to change the ActiveX control name, be aware that ABL uses this name to identify event handlers for the control. If you define event handlers in external procedures other than the one where you initially define the control instance, the AppBuilder cannot update them to conform with the new name. You must modify the names of these external event handlers manually to conform with the new name. For more information on defining event handlers for ActiveX controls, see Handling events.