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Richard Luteijn
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 Posted: Sat Feb 18, 2006 1:03 am Post subject: Derive from TIBQuery, Database not Assigned error |
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Hello,
How to derive a TIBQuery component ?
I'm trying to derive my own TMyIBQuery in a package MyPackage. I'm using the
Add button to add a new component and choose TIBQuery as the ancestor type.
etc. etc. The usual way.
Without adding any code or properties, I compile/install the package. Then
drop the new TMyIBQuery component on a new form in a new App (again no code
and no properties assigned).
THE PROBLEM:
When i try to delete the component from the form (or whenever the form is
closed) i get the message 'Database not Assigned' and the only way to close
the IDE is using the Taskmanager.
If i do the same with the 'genuine' TIBQuery, i can delete it without any
problem.
Using BCB 6 and InterbaseExpress 6.06
Thanks a lot for any help,
Richard |
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Richard Luteijn
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| Posted: Sun Feb 19, 2006 5:03 am Post subject: Re: Derive from TIBQuery, Database not Assigned error |
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Apologies,
| Quote: | How to derive a TIBQuery component ?
Didn't look hard enough on the web. Read somewhere that due to a compiler |
issue, this is not possible.
But what about a TIBDataSet (the preferred component anyway). I can 'use'
the new TMyIBDataSet, providing i set the SelectSQL at runtime. Setting it
at design time results in a 'Transaction not active' error. But at least the
IDE is still alive after i close the form/app or delete the component.
btw. just upgraded to IBX 6.08.
Richard |
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