Re: [Java-gnome-developer] ButtonPressEvent not working ...

[Andrew C. <an...@op...>]

On Wed, 2009-09-23 at 08:37 -0400, Thura wrote:
> But, when it runs, the context menu doesn't show up ...
> I have tried replacing ButtonPressEvent with KeyPressEvent, it
> works ...

You've been bitten by the well known beginner's pitfall

        "my example is so trivial that not everything that would be
        present in a real application is there, so things that would
        normally work fine appear not to be working at all"

In this case, you've not got enough packed into your top level Window to
make it behave. In fact, you haven't got _anything_ packed into your top
level Container. So, really, it's not that surprising that not
everything is working.

Quick solution:

Pack an EventBox into your top level Window and connect your
Widget.ButtonPressEvent handler to that instead. I tried it, works fine.

Underlying issue:

Ordinarily you don't have to think about this as normal GTK Widgets take
care of this, but your problem was that the underlying GDK Window
backing the GTK Window hasn't been setup to react to mouse events. There
are a few branches floating around with different suggestions about how
to offer direct access to that API, but you don't need any of that; just
add an EventBox - it's there to give Widgets that don't have event
handling (ie, Labels) events.

AfC
Sydney