[PyQt] Re: QStyle manipulations

[Hans-Peter Jansen]

Am Montag, 27. Juli 2009 schrieb Hans-Peter Jansen:
> Am Montag, 27. Juli 2009 schrieb Hans-Peter Jansen:
> >
> > Next you find a test script simply intercepting this slot, but while
> > the constructor of PlastiqueStyle is being called correctly, the slot
> > is not :-(.
> >

For what is worth, here's an updated version of the test script, that 
depends on the former q*style.sip files included in your PyQt installation.
I've still no idea, why the layoutSpacingImplementation() slot is not 
called, but this script proves, that both PM_LayoutHorizontalSpacing and 
PM_LayoutVerticalSpacing do return -1, which is prerequisite for Qt to call 
this slot. 

My theory is, that this paragraph is the culprit:

About QStyle::layoutSpacing():
For binary compatibility reasons, this function is not virtual. If you want 
to specify custom layout spacings in a QStyle subclass, implement a slot 
called layoutSpacingImplementation(). QStyle will discover the slot at 
run-time (using Qt's meta-object system) and direct all calls to 
layoutSpacing() to layoutSpacingImplementation().

Phil, could it be, that Qt isn't able to discover the slot being available 
as a pyqt slot? 

BTW, did somebody in the kind audience ever came across 
QSqlDriver.subscribeToNotificationImplementation() and used it for some 
reason? It seem to use similar mechanisms?

Thanks,
Pete
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