Re: Some questions about func_data things.

["Ross McFarland" <rwmcfa1 neces com>]

Christian Hamar said:
> hi there.
>
> So i create a thing like this :
>
> $gh = "first";
> $button = new Gtk2::Button("something");
> $button->signal_connect('clicked' => \&do, $gh);
>
> sub do {
> 	my ($tmp) = @_;
> 	print "tmp - $tmp\n";
> }
>
> So. I don't know. Is this the right way to "apply" a func_data thing to
> signal_connect ? If this is the right way then my question:
>
> When the script running then i got this:
>
> tmp - HASH(0x34252525)    or something else hash value. How can i catch the
> $gh value that i specified for func_data ???
>
> A little example plz. many thx.

as a general rule when i'm connecting a signal or just dealing with any kind
of call back i always start out with a callback like this

use Data::Dumper;
sub callback
{
    print STDERR Dumper( @_ );
}

to see what all it gets me. of course the c doc's will tell you what to
expect, but most of the time doing the above will tell me all i need to know
about what the callback gets as params.

-rm