[SailfishDevel] Closing an application without killing the main loop

[Ville Ranki]

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Hello,

I'm the author of Siilihai web forum reader <http://siilihai.com> and
i'm currently porting it to Sailfish.

Siilihai needs to synchronize it's status (read messages etc) to a
remote server when user quits it.

I have not found a way to do it in Sailfish. When user closes the
application, Sailfish terminates the Qt main loop which effectively
makes it impossible to do any asynchronous tasks.

On desktop QApplication::setQuitOnLastWindowClosed(false) can be
used to instruct Qt to continue running main loop when last
window is closed, but it does not work on Sailfish.

Restarting the main loop worked on Harmattan, but on Sailfish
it causes a crash inside Qt-Wayland code (qwaylandeventthread.cpp line
37). I also tried to create a Qt event filter with no success.


Here is a example application to demonstrate the issue:
http://talk.maemo.org/attachment.php?attachmentid=33970&d=1386249527

This application creates a repeating timer which stops working
when the window is closed.

I have already asked about the issue on TMO and #sailfishos, but didn't
get any satisfactory answers.

http://talk.maemo.org/showthread.php?t=91947

The question is: is this a bug or intended behavior? Can anyone hack
the example application so that the timer keeps running after the window
is closed?

- -- 
Ville Ranki <ville.ranki at iki.fi>
http://www.iki.fi/~cos
PGP public key: http://www.iki.fi/~cos/vranki_pub.asc
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