Re: Problems with Gdk::Pixbuf

[dams <dams idm fr>]

Jeremy McLeod <jeremym lawcode net> writes:

> Hi,
>
> I'm trying to load png data from a GD::Image object into a DrawingArea,
> but I'm having problems.  This is the relevant code:
>
> -----
> my $gd = $graph->plot(\ data);
> ...
> my $drawable = new Gtk::DrawingArea();
> $drawable->size(500,200);
> $window->add($drawable);
>
> my $pixbuf = new_from_data Gtk::Gdk::Pixbuf(
>       $gd->png,
>       $colorspace,
>       $true,
>       $bits,
>       $width,
>       $height,
>       $rowstride,
> );
> $drawable->signal_connect('expose_event', sub {
>     $pixbuf->render_to_drawable_alpha(
>               $drawable,

replace with :
                $drawable->window,

after making sure drawable has been realized (but it's ok cause you are in a
expose event)


>       0, 0, 0, 0,
>       $pixbuf->get_width(), $pixbuf->get_height(),
>       0, 50, 0, 0, 0);
>     1;
> });
> -----
>
> But when I run it, I get this error:
>
> variable is not of type Gtk::Gdk::Pixmap at test.pl line 68.

it says that it wants a Gtk::Gdk::Pixmap :)