From: Stefano Crocco <stefano.crocco@...>
Date: 2007-08-23T19:20:33+09:00
Subject: Re: wxruby and trayicon error and where to learn more about wxruby?

Alle gioved� 23 agosto 2007, kazaam ha scritto:
> Hi,
> I'm working with wxruby since 2 days but next to this Wiki:
> http://wxruby.rubyforge.org/wiki/wiki.pl and this Doc:
> http://wxruby.rubyforge.org/doc/ I couldn't find something usefull for it.
> Also del.icio.us has no intresting links. Do you know any good website or
> book about wxruby?
>
> My problem at the moment is, I wanna test the TaskBarIcon on Gnome and so I
> did:
>
> #!/usr/bin/env ruby
>
> $Verbose=true
>
> require 'rubygems'
> require 'wx'
>
> include Wx
>
>
> class MinimalApp < App
>
>     def on_init
>         mytask = TaskBarIcon.new
>         mytask.set_icon('shutdown.svg','thats my tooltip')
>     end
>
> end
>
>
>  MinimalApp.new.main_loop
>
> #eof
>
> the doc tells about set_icon:
> Boolean set_icon(Icon icon,  String tooltip)
> Sets the icon, and optional tooltip text.
>
> shutdown.svg is an Icon and next to it comes a string, so it should be
> right or? But executed I'm always getting this error:
>
> ./task.rb:15:in `set_icon': in method 'SetIcon', argument 2 of type 'wxIcon
> const &' (TypeError) from ./task.rb:15:in `on_init'
>         from ./task.rb:21:in `main_loop'
>         from ./task.rb:21
>
> Someone knows why this happens?
>
> greets


'shutdown.svg' is not a Wx::Icon, it's a string. I didnt' look at the 
wxWidgets documentation in detail, but I think you need to do something like  
the following:

bitmap = Wx::Bitmap.new
bitmap.load_file 'shutdown.png', Wx::BITMAP_TYPE_PNG
icon = Icon.new
icon.copy_from_bitmap
mytask.set_icon icon, 'tooltip'

or (I'm not sure whether you can load png files directly using Icon#load_file)

icon = Icon.new
icon.load_file 'shutdown.png', Wx::BITMAP_TYPE_PNG
mytask.set_icon icon, 'tooltip'

At any rate, I don't think you can load svg images. The documentation seems to 
say that only raster image types are supported.

I hope this helps

Stefano