Re: gobject introspection

[Jeff Franks <jcfranks tpg com au>]

Matthias Clasen wrote:

> [snip]
>
> So, how do language bindings handle GdkEvent currently ?
>
>  
The Xfce Foundation Classes, a C++ binding, wraps a GdkEvent pointer in 
a C++ wrapper class called Gdk::Event. Each event type then has its own 
class that derives from Gdk::Event, via an intermediate class called 
Gdk::EventAny. Gdk::Event provides public accessor functions that cast 
the Gdk::Event base class to the correct derived event class type, or 
null,  depending on the GdkEventType field.

Each derived event class has an accessor function that returns the base 
class' stored GdkEvent pointer cast to a pointer the corresponding GDK 
event struct type, such as a GdkEventButton or GdkEventMotion pointer. 
Each event class type provides accessor functions for the corresponding 
GDK struct fields. In the XFC Gtk::Widget event signal handlers each 
GdkEvent pointer is wrapped in the appropriate XFC event class type 
before passing it to the user defined event signal handling function.

Jeff.