Simon Chan wrote:
> Hi, Frederik.
>
> Thank you, Frederik. I have been figuring this out for 2 nights.
> In java this works fine, I was scratching my head out.
Yes, Vala has a different memory management model than Java. Vala does
reference counting and Java does garbage collection. In Vala an
unreferenced object gets freed as soon as possible.
> Just one more question, if I connect the signal to a function instead
> of using lambda expression, does the function take parameter?
>
> like " void changelabel( Widget source ) {} " ?
Yes, if the parameters match the expected parameters of the signal. You
can read about the exact behaviour on this wiki page:
http://live.gnome.org/Vala/SignalsAndCallbacks
For example:
--------------------------------------------------------
class Foo {
signal void bar (int a, int b);
}
void on_bar (Foo source, int a, int b) {
// ...
}
void main () {
var foo = new Foo ();
foo.bar.connect (on_bar);
}
--------------------------------------------------------
Best Regards,
Frederik
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