FormVCRClass Relationship to Other Application Builder Classes

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The FormVCRClass is closely integrated with several other ABC Library objects--in particular the WindowManager and ToolbarClass objects. These objects register their presence with each other, set each other's properties, and call each other's methods as needed to accomplish their respective tasks.

The FormVCRClass is derived from the ViewManager, plus it relies on many of the other Application Builder Classes (RelationManager, ToolbarClass, etc.) to accomplish its tasks. Therefore, if your program instantiates the FormVCRClass, it must also instantiate these other classes. Much of this is automatic when you INCLUDE the FormVCRClass header (ABVCRFRM.INC) in your program's data section.