wxruby users - Jul 2008 - Raising exceptions and "wrong number of arguments" problem

Hi everyone - what is the proper way to display error messages when you
raise exceptions?

For example, the following code...

class MyWxRubyClass
  some code...
  evt_button(my_button) do
    begin
      some code...
      if wrong_condition
        raise "My Error Message"
      end
      some code...
    rescue Exception => msg
      puts msg
      Wx::MessageDialog.new(nil, msg, ''Error Popup'',
Wx::OK|Wx::ICON_ERROR).show_modal
    end
  end
end

... produces "wrong # of arguments(1 for 0)" error message in both
console and message box.
How can I make it to display "My Error Message"?
"Wrong # of arguments(1 for 0)" happens only when I raise my own error
messages, ruby''s native error messages are being displayd well.
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Bob Bobrov wrote:
> Hi everyone - what is the proper way to display error messages when you
> raise exceptions?
>
> For example, the following code...
>
> class MyWxRubyClass
>   some code...
>   evt_button(my_button) do
>     begin
>       some code...
>       if wrong_condition
>         raise "My Error Message"
>       end
>       some code...
>     rescue Exception => msg
>       puts msg
>       Wx::MessageDialog.new(nil, msg, ''Error Popup'',
> Wx::OK|Wx::ICON_ERROR).show_modal
>     end
>   end
> end
>
> ... produces "wrong # of arguments(1 for 0)" error message in
both
> console and message box.
Use Kernel.raise, eg
Kernel.raise "My Error Message"

The reason this is needed is because if you''re inside a class that 
inherits from Wx::Window, a call to ''raise'' unqualified is
taken to mean
the instance method Window#raise (which takes no arguments)

alex

Alex Fenton wrote:
> The reason this is needed is because if you''re inside a class that
> inherits from Wx::Window, a call to ''raise'' unqualified
is taken to mean
> the instance method Window#raise (which takes no arguments)
> 
> alex
Thank you very much, Alex :-)

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