Put on your debug hat and find the callstack of the exception as it relates
to an event reference either in the form or the app. You are somehow
referencing a nil object in code called in an event.

Jason Wharton
CPS - Mesa AZ
http://www.ibobjects.com

-- We may not have it all together --
-- But together we have it all --

----- Original Message -----
From: "stevefields37075" <fields24@...>
To: <IBObjects@yahoogroups.com>
Sent: Thursday, November 07, 2002 1:39 PM
Subject: [IBO] Problem with closing an App


> Hi All,
> I have been having flaky problems from time to time
> with some unusual problems with IBO (4I). One of them
> is that once I have been in the SQL editor it will
> refuse to close even if the sql was never executed and
> still not even if the OK, Apply and even _X_ buttons
> are pressed.
>
> The other problem is that in some apps I will be unable
> to close them with a simple close. (This is with a TDatamod,
> a normal form and TIB_Conn, TIB_Query, etc.) If I put
> a break point on the last END; of the destroy procedure,
> in the TDatamod, it will close normally. If not I can
> interrupt the app with the Delphi pause button and the
> cpu window show a long string of zeros in the execution
> lines window (upper-left). Then I have to Ctrl-F2 the app
> to even get it to close. I close all querys, check and
> close all transactions and then close the TIB_Connection.
> Still no luck. And this is has no pattern from app to app.
> I step through the source in IBO but after the first break-
> point it close normally anyway. Am I hitting a logic bug
> somewhere? Any thoughts????? It does seem to be the IBO
> code as there is no other source code that is stepped
> through by the time of the TDatamod.
>
> (A sample app would be too long: 600 lines or more for
> the base form)
>
>
> Steve Fields