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ID Category Severity Reproducibility Date Submitted Last Update
0003982 [JEDI VCL] 00 JVCL Components tweak N/A 2006-11-05 22:59 2006-11-06 02:17
Reporter EinWill View Status public  
Assigned To obones
Priority normal Resolution fixed  
Status resolved   Product Version 3.20
Summary 0003982: Deleting the component that is assigned to TJvDBSpinEdit.DataSource property produce an exception
Description Assume, that we have TJvDBSpinEdit.DataSource equals to MyDataSource1. Now we delete MyDataSource1. JvDBSpinEdit still contains a link to this component and it produce an exception.

Reason: TJvDBSpinEdit.SetDataSource calls DataSource.FreeNotification,
        but Notification method is never handled.

Solution: We should override protected method Notification like this:
procedure TJvDBSpinEdit.Notification(AComponent: TComponent;
  Operation: TOperation);
  inherited Notification(aComponent, Operation);
  if (Operation = opRemove) and (FDataLink <> nil) and
     (aComponent = DataSource) then DataSource := nil;
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- Issue History
Date Modified Username Field Change
2006-11-05 22:59 EinWill New Issue
2006-11-06 02:17 obones Status new => resolved
2006-11-06 02:17 obones Fixed in Version => Daily / SVN
2006-11-06 02:17 obones Resolution open => fixed
2006-11-06 02:17 obones Assigned To => obones

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