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Bug Report T146426
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TcxDBTreeList - It is impossible add new records to the dataset from the OnFocusedNodeChanged event handler

created 11 years ago (modified 11 years ago)

Recently, my old projects (use devexpress vcl) upgrade from 13.1.3 to 14.1.3. (Delphi XE)
I found a strange problem, the same code, OnFocusedNodeChanged events don't work properly.

I modified the data in the OnFocusedNodeChanged events, but cxDBTreeList won't refresh immediately and load the new data.

Please compile the example in the attachment, respectively using the Ver 13.1.3 & Ver 14.1.3 compilation, there will be two different results.

I compared the your source code, in cxDBTL.pas unit.
Ver 13.1.3:

Delphi
procedure TcxTreeListDataLink.LayoutChanged;  
begin  
  if TreeList.DataBusy then  
    TreeList.RefreshTree  
  else  
    DataSetChanged;  
end;

Ver 14.1.3:

Delphi
procedure TcxTreeListDataLink.LayoutChanged;  
begin  
  DataSetChanged;  
end;
Comments (1)
DevExpress Support Team 11 years ago

    Hello Justin,

    I've reproduced both behaviors. I'm forwarding this thread to our developers for further processing and research.

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    Answers approved by DevExpress Support

    created 11 years ago

    We have fixed the issue described in this ticket and will include the fix in our next maintenance update. To apply this solution before the official update, request a hotfix by clicking the corresponding link for product versions you require.

    Note: Hotfixes may be unavailable for beta versions and updates that are about to be released.

      Show previous comments (6)
      JD JD
      Justin Ding 11 years ago

        Hello Mikhail,
        I reinstall the controls (VCL 14.1.14) to Delphi XE and XE5.
        XE: the bug has been fixed.
        XE5: the error still exist.

        JD JD
        Justin Ding 11 years ago

          Please compile the demo project with Delphi XE5. you can reproduce this behavior.

          DevExpress Support Team 11 years ago

            OK. We will research this behavior and get back to you once we have any results or need additional information. Thank you for your patience.

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