On Fri, 6 Sep 2019 at 16:57, Mike Martin via gtk-perl-list <
gtk-perl-list@gnome.org> wrote:
> How do I use Gtk macros in perl-gtk?
> eg in c
> GTK_IS_CONTAINER(widget)
> What is the corresponding method in perl-gtk
>
I assume you're talking about Gtk3.
Macros are not introspected unless they evaluate to simple scalar values.
The "IS" type checking macros are replaces by normal Perl type checking
operations:
```
use v5.22;
use Gtk3 '-init';
my $x = Gtk3::Button->new_with_label('foo');
say "The type of x is: ", ref($x);
```
will print out:
```
The type of x is: Gtk3::Button
```
If you want to check if an instance is of a certain type, you can use
UNIVERSAL::isa:
```
use v5.22;
use Gtk3 '-init';
my $x = Gtk3::Button->new_with_label('Foo');
say "x is a button" if $x->isa('Gtk3::Button');
say "x is a container" if $x->isa('Gtk3::Container');
say "x is a widget" if $x->isa('Gtk3::Widget');
say "x is a window" if $x->isa('Gtk3::Window');
```
will print out:
```
x is a button
x is a container
x is a widget
```
Hope this helps.
Ciao,
Emmanuele.
--
https://www.bassi.io
[@] ebassi [@gmail.com]
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