[maemo-developers] delete-event processing of GtkWindow causes cordump

[From: Murray Cumming]

On Mon, 2007-07-23 at 16:36 +0800, Zhu, Peter J wrote:
> Hi,
> 
> As I wrote one application for new hildon-1/hildon-wm, I found there is
> a serious problem
> with one of the toplevel windows it creates. If one tries to close that
> window by click X at top right corner, coredump happens. Then
> I tried to found the difference of that window with others. Then
> I found that the buggy window has connected with "delete-event" signal
> and the callback of the signal returns FALSE to let window continue
> destroy. 
> 
> To verify the issue is NOT caused by the special application logic
> itself, I write one very simle program that only creates one toplevel
> window and has delete-event-cb callback. If the callback returns TRUE,
> no problem. If it returns FALSE, then the program coredump as attched at
> last of mail.
> 
> In my understanding it should be a problem of components of app
> framework. It might be hildon-wm, matchbox or gtk porting
> itself. 

This is a very common technique. You should try to create a
simple-as-possible test case. That will probably show the real cause of
the error in your own code. And if there's really a problem then it will
help people to fix it.

-- 
Murray Cumming
murrayc at murrayc.com
www.murrayc.com
www.openismus.com