[PyKDE] session handling

[Hans-Peter Jansen]

Am Montag, 12. Februar 2007 schrieb Marcos Dione:
>     I'm trying to add session saving support to my app to no avail. all
> I've got to, was to simulate it at window close.

Please elaborate.

Typically, I'm reimplementing close on a QMainWindow derived class for this 
purpose with success:

    def close(self, alsoDelete = 1):
	# save state here
	return QMainWindow.close(self, alsoDelete)

I haven't done this with KMainWindows, though.

> the code I have is this: 
>
>     def saveState (self, *more):
>         print 'saveState()'
>         super (Kress, self).saveState (more)
>
>     def restore (self, n, show, config):
>         super (Kress, self).restore (n, show)
>         config.setGroup ('%d' % n)
>         # this doesn't work anymore, so we just [f]make it.
>         self.restoreProperties (config)
>
>     def saveProperties (self, config):
>         print 'saving properties'
>         urls= []
>         for i in range (1, self.tabMaster.count ()):
>             tab= self.tabMaster.page (i)
>             part= self.partForTab[tab]
>             urls.append (str (part.url ().url ()))
>         config.writeEntry ('urls', urls)
>         config.sync ()
>
>     the kde documentation about it[1] is very limited and only to
> restoring, not about saving. qt's doc[2] suggest to use xsm to debug it,
> so I did. if I try to shut it down, I get a SIGSEGV whith this backtrace:
>
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread -1209940288 (LWP 589)]
> 0xb700d104 in QVariant::QVariant () from /usr/lib/libqt-mt.so.3
> (gdb) bt
> #0  0xb700d104 in QVariant::QVariant () from /usr/lib/libqt-mt.so.3
> #1  0xb68a68c4 in sipVH_kdecore_21 ()
>    from /usr/lib/python2.5/site-packages/kdecore.so
> #2  0xb5e267a8 in sipKMainWindow::saveProperties ()
>    from /usr/lib/python2.5/site-packages/kdeui.so
> #3  0xb56edf0c in KMainWindow::savePropertiesInternal ()
>    from /usr/lib/libkdeui.so.4
> #4  0xb5762c61 in KMWSessionManaged::saveState () from
> /usr/lib/libkdeui.so.4 #5  0xb65d249d in KApplication::saveState () from
> /usr/lib/libkdecore.so.4 #6  0xb67c67f2 in sipKApplication::saveState ()
>    from /usr/lib/python2.5/site-packages/kdecore.so
> #7  0xb6ee1f58 in ?? () from /usr/lib/libqt-mt.so.3
> #8  0x08754400 in ?? ()
> #9  0x0878f920 in ?? ()
> #10 0x0878a010 in ?? ()
> #11 0x00000000 in ?? ()
>
>     any hints?

Hmm, this traceback smells fishy, you may want to provide a minimal self 
containing example to let others explore this issue..

Pete