There are mainy different types of events in AutoCAD.
The following is some of the common types of events:
- Application -
Events respond to the AutoCAD closing, changes to system variables,
begin double clicking, and entering and leaving modal states.
- Database - Events
respond to the saving drawings, addition, deletion, or modification
of objects, insertion of block references, attachment and changes
to external drawings (xrefs). There are also document level events for
system variable changes.
- Document - Events
respond to the closing drawings, issuing of AutoCAD commands,
issuing AutoLISP command or statements, and changes to system variables.
- DocumentCollection -
Events respond to the creation and destruction of a document, document
is actived or deactived, and lock mode changes to a document.
- Editor - Events
respond to the changes during requests for user input.
- Graphics - Events
respond to the creation and destruction of views, and view configuration
changes.
- Plotting - Events
respond to plotting a layout.
- Publishing -
Events respond to publishing a layout.
- Runtime - Events
respond to loading and unloading modules, and variables changed
or are changing.
- Windows - Events
respond to changes to the status bar, tray items, palettes and InfoCenter.
Subroutines
that respond to events are called event handlers and
are executed automatically each and every time their designated
event is triggered. Information contained in the arguments returned
by an event, such as a system variable name in the SystemVariableChanging
event, are passed from the event handler to the SystemVariableChangingEventArgs
object.
