Visual C++ exit codes

[Roger99]

I am devloping a Visual C++ database application using ODBC.

After I run the program in Debug mode, add a new record, then close the program, the debug window shows that some threads and the program itself have exited with a "code 2".

If I run the program and simply delete a record, this does not occur.

What do the codes this mean; is this serious; and what is likely to be causing it?

 

[Cagliostro]

do not forget about FlushResultSet and/or commit transaction. Also you should close and free any statements before disconnecting from a database.

Ion Filipski

ICQ: 95034075
AIM: IonFilipski
filipski@excite.com

 

[Roger99]

Thanks for the speedy reply, Ion. Your suggestions didn't fix the problem, but they did inspire me check my code, and I have improved the database shutdown as a result.

I have noticed that if I close the app with a toolbar button that simply calls CDialog::OnOk() then there is no problem with the exit codes. (The app uses a modal dialog box.) However, if I use the system menu "x" button, then three of the thread exit codes are "2". I have not touched the default OnSysCommand() handle for this button.

Any idea what's going on?

 

[Cagliostro]

there are some other events what also you can handle. OnClose OnDestroy


Ion Filipski

ICQ: 95034075
AIM: IonFilipski
filipski@excite.com