[PyQt] Using a function for the pyqtProperty designable attribute

[Kyle Altendorf]

I was looking to make a pyqtProperty be run-time configurable for being 
designable or not.  I've quoted the PyQt5 and Qt documentation on the 
topic below and while it appears that Qt supports specifying a function 
for the designable attribute, PyQt5 does not (no mention in the 
documentation and it didn't work for me in 5.5.1.  I admittedly did not 
try 5.6).  Am I correct that PyQt5 cannot control the designable 
attribute dynamically?  Any plans to implement this?  I have solved my 
issue another way but figured I would ask.

http://pyqt.sourceforge.net/Docs/PyQt5/qt_properties.html
> designable – optionally sets the Qt DESIGNABLE flag. It is ignored by 
> Python

http://doc.qt.io/qt-5/properties.html
> The DESIGNABLE attribute indicates whether the property should be 
> visible in
> the property editor of GUI design tool (e.g., Qt Designer). Most 
> properties
> are DESIGNABLE (default true). Instead of true or false, you can 
> specify a
> boolean member function.

Cheers,
-kyle