Errors because object reactors point to non existing objects

[WelfKreisel]

In our applikation we have defined persistent object reactors,
in fact these reactors are pointers from the callback functions to an object.

Deleting an object doesn't delete the reactor-pointer,
so the pointer is still existing and points to a non-existing-object.

Saving and re-open the dwg causes error messages,
because these reactor-pointers are still existing
and pointing to a non-existing-objects.

How can we handle this?

[Anonymous]

Hi Welf you MUST remove dead links to your objects at closedown a) create a database reactor at startup (vlr-editor-reactor nil '( (....) (:vlr-beginSave . beginSave-drawing ) (:vlr-beginClose . remove-reactors)<<<<----- ) Then when command "CLOSE" starts a notification will be fired (vlr-beginClose..) Find all reactors and check if their objects are dead = deleted For deleted objects remove the reactor-callback Regards, Dieter WelfKreisel wrote: > In our applikation we have defined persistent object reactors, > in fact these reactors are pointers from the callback functions to an object. > > Deleting an object doesn't delete the reactor-pointer, > so the pointer is still existing and points to a non-existing-object. > > Saving and re-open the dwg causes error messages, > because these reactor-pointers are still existing > and pointing to a non-existing-objects. > > How can we handle this? >

[Anonymous]

In my experience, this doesn't work on persistent reactors. You must first make the reactors non-persistent and then delete. wrote in message news:4051a0dd_1@newsprd01... > Hi Welf > you MUST remove dead links to your objects at closedown > > a) create a database reactor at startup > > (vlr-editor-reactor nil '( > (....) > (:vlr-beginSave . beginSave-drawing ) > (:vlr-beginClose . remove-reactors)<<<<----- > ) >

[Anonymous]

Hi Doug, that's what I did not write but intended to say Regards, Dieter Doug Broad wrote: > In my experience, this doesn't work on persistent reactors. > You must first make the reactors non-persistent and then delete. > > > wrote in message news:4051a0dd_1@newsprd01... > >>Hi Welf >>you MUST remove dead links to your objects at closedown >> >>a) create a database reactor at startup >> >>(vlr-editor-reactor nil '( >> (....) >> (:vlr-beginSave . beginSave-drawing ) >> (:vlr-beginClose . remove-reactors)<<<<----- >>) >> >> > >

[Anonymous]

Sorry Dieter, I hadn't read your response to his earlier thread where you already said that. Regards, Doug wrote in message news:4051d547$1_3@newsprd01... > Hi Doug, > that's what I did not write but intended to say > Regards, > Dieter >