Work in a Zero Document State

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Work in a Zero Document State

A zero document state is when there are no open drawings in AutoCAD. There are several important considerations to keep in mind when you are working with VBA in a zero document state:

• The ThisDrawing object is undefined in a zero document state. Any attempt to use ThisDrawing will result in an error.
• Objects that are document dependent are also not defined in a zero document state. Document dependent objects are those objects that fall below the Document object in the AutoCAD object model. Working with nondocument-dependent object, such as the Application or MenuBar objects, is allowed.
• AutoCAD does not have a command line in a zero document state. Any attempt to access the AutoCAD command line while AutoCAD is in a zero document state will result in an error.