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Resolved AutoInstantiated NVO

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  1. Kieu Parrish
    Kieu Parrish
  2. PowerBuilder
  3. Thursday, 12 December 2019 01:58 AM UTC

Please help me the below :

Is NVO with AutoInstantiate checked destroyed automatically in PowerBuilder 2017 ?

Thank you very much!

 

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Responses (3)
Michael Kramer
Michael Kramer Accepted Answer Pending Moderation
  1. Thursday, 12 December 2019 12:31 PM UTC
  2. PowerBuilder
  3. # 1

Hi Kieu, AutoInstantiated object have lifecycle like a structure. So it will get garbage collected when there are no more references to the object.

Roland points out a great way to understand WHEN that happens => MessageBox in its destructor event.

HTH /Michael

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Kieu Parrish
  1. Kieu Parrish
  2. Thursday, 12 December 2019 13:07 PM UTC
Thanks, Michael!
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Roland Smith
Roland Smith Accepted Answer Pending Moderation
  1. Thursday, 12 December 2019 03:41 AM UTC
  2. PowerBuilder
  3. # 2

The best way to answer this would be to put a messagebox in the destructor event and run the app.

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Kieu Parrish
  1. Kieu Parrish
  2. Thursday, 12 December 2019 13:07 PM UTC
Thanks, Roland! I will try that.
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Kieu Parrish
  1. Kieu Parrish
  2. Thursday, 12 December 2019 18:12 PM UTC
It worked! Thank much, Roland!
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Chris Pollach @Appeon
Chris Pollach @Appeon Accepted Answer Pending Moderation
  1. Thursday, 12 December 2019 02:13 AM UTC
  2. PowerBuilder
  3. # 3

Hi Kieu;

    Yes ... eventually - most likely when the App finally  shuts-down or your app explicitly calls the GarbageCollect() command.

Regards ... Chris

Comment
Kieu Parrish
  1. Kieu Parrish
  2. Thursday, 12 December 2019 13:06 PM UTC
Thanks, Chris!
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