vlr-acdb-reactor
(vlr-acdb-reactor customData
callbackList)
This function creates and attaches a Database
operation reactor to the current drawing, for the database events
specified by callbackList.
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Arguments
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customData
(any valid Lisp data) custom data to be
associated with the reactor object, can be NIL
callbackList (list) list of DottedPair entries, each
DottedPair has the form
(event
. callback)
event : one of
these symbolic constants
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:vlr-objectAppended
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an object has been added to
the dwg database
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:vlr-objectUnAppended
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an object has been removed
from the dwg database (i.e. by undo operation)
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:vlr-objectReAppended
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an object has been re-added
to the dwg database (i.e. by redo operation)
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:vlr-objectOpenedForModify
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an object has been opened for
write (i.e. to be modified afterwards)
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:vlr-objectModified
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an object has been
modified
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:vlr-objectErased
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an object has been erased
(i.e. by (entdel)
function)
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:vlr-objectUnErased
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an object has been unerased
(i.e. by (entdel)
function)
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callback : the
client Lisp side callback function, using 2 arguments :
(defun MyCB ( reactor args
/ ...) ...)
reactor : the
database reactor object - #<VLR-AcDb-Reactor>
args : (list)
first list entry is the database which is affected, the second
entry is the object being appended to that database -
(#<VLA-OBJECT IAcadDatabase 000000003AA5B598> <Entity
name: 3aa66070>)
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Return
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the reactor object
#<VLR-AcDb-Reactor> or NIL
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Example
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Remarks
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