Access Violation when switching Bindsource of LinkFieldToComponent on TwwEdit

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Max

• April 05, 2022 14:33
• Edited

I get an Access Violation when i switch the TFDMemTable which is bound to a TwwEdit using a Bindsource and a LinkFiledtoComponent. Is there something i have to do with the wwEdit before switching the TFDMemTable?

I´m developing an iOS-Only App, so debugging is a bit tedious.
In Delphi 10.4, the same procedure worked flawlessly.

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  Michael Verhagen

  • April 05, 2022 15:35

  I am unfamiliar with LinkFieldToComponent.  In a similar situation that uses a TFDQuery and its BindSource I use LinkControlToFIeld.  When I search for LinkFieldToComponent on the web I get no hits.  Same for Delphi's Help in 10.4.2.  Can you clarify?

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  Max

  • April 06, 2022 07:03

  It is a TLinkControlToField. Sorry, I´ve rembered it incorrectly.

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  Roy Woll

  • April 06, 2022 15:13

  I'm not sure how to reproduce your problem. Are you sure that your dataset is working? Have you tried a standard TEdit to see if it works in your case?

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  Max

  • April 07, 2022 11:57

  I also couldn´t reproduce the problem in another project. I just set all the Bindings to active:=false before loading the second Memtable and reactived them afterwards. That fixed the problem.
  
  I guess this wasn´t a problem with the TwwEdit but with the LiveBindings.  

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