VBA: STOP REBUILD

Discussion in 'SolidWorks' started by Corey Scheich, Oct 22, 2003.

  1. Ok I am creating a macro that I would like to wait until the end to rebuild.
    I know how to watch for a rebuild event but how do I cancel it out in VBA
    SW2003. I could have sworn that somebody mentioned it a few months ago but
    the only reference I found was for C++.

    Public WithEvents PartEvents As SldWorks.PartDoc

    Private Function PartEvents_RegenNotify() As Long
    'what goes here to cancel regen
    End Function

    Thanks,
    Corey Scheich
     
    Corey Scheich, Oct 22, 2003
    #1
  2. Philippe Guglielmetti, Oct 23, 2003
    #2
  3. Ok this works, but now it can't get the faces of a new feature that wasn't
    rebuilt. I am using the faces to select the body. Do I have to rebuild
    inorder to do this or is there some other way. (it was working until I added
    the Rebuild interupt.)

    Corey
     
    Corey Scheich, Oct 23, 2003
    #3
  4. Of course! If the feature wasn't rebuild, its geometry is invalid!
    Why do you cancel the rebuild ? I use the trick to speed up the creation of
    multiple features in SolidSketch, and some people can use RedLight to avoid
    rebuilds while making multiple changes, but in all cases you have to rebuild
    the model sooner or later, when you want to access the resulting geometry.

    Now there is also a BIG problem related to all this.
    SW changed the way rebuilds are done since SW2003. Now, when SW rollbacks to
    a state (if you edit a sketch for example), all geometry below this point is
    invalidated (including features that do not depend on the modified feature!)
    so any Face object you had is likely to be invalid. It *might* be valid
    again after a successful rebuild (see Entity::IsSafe).

    All this is badly documented, the reason fot his change from SW2001+ is hard
    to understand (it causes us big trouble, and I'm convinced it is largely
    involved in SW 2003 being slower and less reliable than 2001+), so I'd be
    happy if someone could explain me the benefits of the new rebuild
    strategy...
     
    Philippe Guglielmetti, Oct 23, 2003
    #4
  5. Corey Scheich

    Todd Guest

    Philippe...

    I may be way off base, but I think it has something to do with the faster
    rollback and rebuild speeds they advertised when 2003 came out.

    After you open a part, then CTRL-Q, you can roll back into the part (make no
    changes) and then roll through the features MUCH faster then before because
    the features are retained in memory. This is very handy when stepping
    through the model. Problem is, if you make a change, everything needs to
    rebuild normally.

    So, maybe that "cache" of features in memory cause the behavior you
    describe?

    Todd
     
    Todd, Oct 23, 2003
    #5
  6. Yes, that's probably the reason. I agree that rollback with no changes is
    significantly faster than before.
    I bet it is at expense of memory... However, as others posted here, I didn't
    notice faster rebuilds after a change...
     
    Philippe Guglielmetti, Oct 24, 2003
    #6
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