[Gtk-sharp-list] connect_after issues
Wed, 18 Feb 2004 17:30:04 -0600
On Wed, 2004-02-18 at 16:15, Thiago Milczarek Sayão wrote:
> I still wonder why people would want to connect_after things ??
> As a gtk binding, gtk# should follow what is standard in gtk which is
> connect_before. (see g_signal_connect ()).
This is already in the FAQ, but just because the convention in C
programming is to pierce encapsulation and change object behavior
without subclassing doesn't mean that a C# binding should do it.
> I was told at #mono that i could connect_before extending the class and
> overriding the event method. That doesn't work. See the example
No, subclassing and overriding the default handler does *not* use
g_signal_connect at all. It uses the more object-oriented approach of
overriding the object's "protected" default handler to change the
Your example doesn't work because it has a bug. You need to use
RegisterGType to register your subclass with the native type system.
RegisterGType automagically hooks up all overridden default handlers.
Take a look at sample/Subclass.cs for an example usage of
Oh and before anyone mentions that native type registration should be
done automatically, they should go through the exercise of figuring out
how and posting a patch for it, because if I knew how to do that, it
would be done already. :)
Mike Kestner <firstname.lastname@example.org>