Constructs an editor reactor object that notifies of an event related to reading or writing a DXF file

(vlr-dxf-reactor datacallbacks)



Any AutoLISP data to be associated with the reactor object; otherwise nil if no data.


A list of pairs of the following form:

(event-name . callback_function)

where event-name is one of the symbols listed in the “DXF reactor events” table below, and callback_function is a symbol representing a function to be called when the event fires. Each callback function accepts two arguments:

reactor_object The VLR object that called the callback function.

list A list of extra data elements associated with the particular event. The contents of this list for particular events are shown in the “DXF reactor callback data” table.

Return Values

The reactor_object argument.

DXF reactor events

Event name



The contents of a DXF file are to be appended to the drawing database.


The DXF import was not successful.


The DXF import was successful.


AutoCAD is about to export the drawing database into a DXF file.


The DXF export operation failed.


The DXF export operation was successful.

DXF reactor callback data


List length