[PySide] inter-object communications

John Ehresman jpe at wingware.com
Fri Nov 8 16:43:48 CET 2013

On 11/8/13 10:28 AM, Henry Gomersall wrote:
> This is a conceptual question, which I'm sure someone more well versed
> with Qt can answer.
> Is *all* inter-object communication within Qt handled through the
> signal-slot mechanism?

No, all inter-object communication is not handled by signal / slots. 
Regular C++ method calls are used.  You may be thinking of gtk, which 
uses its signal mechanism in more places, but even in gtk, not 
everything uses signals / slots.

PySide uses the ability to subclass C++ classes and to override existing 
virtual methods.  This is done by generating a C++ subclass for each 
class and overriding each method.  In each overridden method, a check is 
done to see if a Python subclass implements the method and to call it if 
it does.



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