wxruby users - Oct 2008 - Wx::Font.new fails in a Runtime Error

I can''t construct a Wx::Font object, because it leads to a Runtime
Error,
though it seems that I use it as per documentation of WxRuby.

Strangely, many mistakes lead to such an error instead of a verbose Ruby
exception :(

Could you please help me with this?
Thanks a lot in advance.
Please see the sample code below.

===================require ''wx''

class TestFrame < Wx::Frame
  def initialize()
    super(nil, -1, "CMD")
    Wx::Font.new(12, Wx::Font::FONTFAMILY_DECORATIVE)
  end
end

class TestApp < Wx::App
  def on_init
    TestFrame.new().show()
  end
end

TestApp.new.main_loop
===================
Enviroment:
Windows XP SP-2
Ruby 1.8.6
WxRuby 1.9.8



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?????? ????????? wrote:
>     Wx::Font.new(12, Wx::Font::FONTFAMILY_DECORATIVE)
Try replacing that line with:

Wx::Font.new(12, Wx::FONTFAMILY_DECORATIVE, Wx::FONTSTYLE_NORMAL, 
Wx::FONTWEIGHT_NORMAL)

- andreas
-- 
Posted via http://www.ruby-forum.com/.

That worked (but why? Aren''t there default values for the rest of the
parameters?), but setting this font as the default style of TextCtrl leads
to the same error:
    text = Wx::TextCtrl.new(self, -1, "text", :style =>
Wx::TE_RICH|Wx::TE_RICH2|Wx::TE_PROCESS_ENTER|Wx::TE_PROCESS_TAB)
    font = Wx::Font.new(12, Wx::FONTFAMILY_DECORATIVE, Wx::FONTSTYLE_NORMAL,
Wx::FONTWEIGHT_NORMAL)
    text.set_default_style(Wx::TextAttr.new(font))    #This leads to error

By the way, why is it a Runtime threatening error, not an exception?

2008/10/13 Andreas Garn?s <lists at ruby-forum.com>
> ?????? ????????? wrote:
> >     Wx::Font.new(12, Wx::Font::FONTFAMILY_DECORATIVE)
>
> Try replacing that line with:
>
> Wx::Font.new(12, Wx::FONTFAMILY_DECORATIVE, Wx::FONTSTYLE_NORMAL,
> Wx::FONTWEIGHT_NORMAL)
>
> - andreas
> --
> Posted via http://www.ruby-forum.com/.
> _______________________________________________
> wxruby-users mailing list
> wxruby-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/wxruby-users
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Oops, sorry, that should be text.set_default_style(Wx::TextAttr.new(Wx::BLACK,
Wx::WHITE, font))

OK, I understand, it works now, thanks for the hint!

But the main problem still exists: it is very hard to determine when you use
wrong or incomplete method signature, when it just silently fails.Is it some
configuration problem of mine or it is WxRuby feature?

2008/10/13 ?????? ????????? <kirill.likhodedov at gmail.com>
>
> That worked (but why? Aren''t there default values for the rest of
the
> parameters?), but setting this font as the default style of TextCtrl leads
> to the same error:
>     text = Wx::TextCtrl.new(self, -1, "text", :style =>
> Wx::TE_RICH|Wx::TE_RICH2|Wx::TE_PROCESS_ENTER|Wx::TE_PROCESS_TAB)
>     font = Wx::Font.new(12,
> Wx::FONTFAMILY_DECORATIVE, Wx::FONTSTYLE_NORMAL, Wx::FONTWEIGHT_NORMAL)
>     text.set_default_style(Wx::TextAttr.new(font))    #This leads to error
>
> By the way, why is it a Runtime threatening error, not an exception?
>
> 2008/10/13 Andreas Garn?s <lists at ruby-forum.com>
>
> ?????? ????????? wrote:
>> >     Wx::Font.new(12, Wx::Font::FONTFAMILY_DECORATIVE)
>>
>> Try replacing that line with:
>>
>> Wx::Font.new(12, Wx::FONTFAMILY_DECORATIVE, Wx::FONTSTYLE_NORMAL,
>> Wx::FONTWEIGHT_NORMAL)
>>
>> - andreas
>> --
>> Posted via http://www.ruby-forum.com/.
>> _______________________________________________
>> wxruby-users mailing list
>> wxruby-users at rubyforge.org
>> http://rubyforge.org/mailman/listinfo/wxruby-users
>
>
>
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?????? ????????? wrote:
> Oops, sorry, that should be 
> text.set_default_style(Wx::TextAttr.new(Wx::BLACK,
> Wx::WHITE, font))
> 
> OK, I understand, it works now, thanks for the hint!
> 
> But the main problem still exists: it is very hard to determine when you 
> use
> wrong or incomplete method signature, when it just silently fails.Is it 
> some
> configuration problem of mine or it is WxRuby feature?
> 
> 2008/10/13 ?????? ????????? <kirill.likhodedov at gmail.com>
I guess you just have to read the documentation very carefully. I get 
significantly better error messages on Ubuntu, however, eg:
> Wx::Font.new(20)
ArgumentError: Wrong arguments for overloaded method
''wxFont.new''.
Possible C/C++ prototypes are:
    wxFont.new()
    wxFont.new(int pointSize, int family, int style, int weight, bool 
const underline, wxString const &faceName, wxFontEncoding encoding)
-- 
Posted via http://www.ruby-forum.com/.

Andreas, you definitely have much more descriptive messages.It looks like a
problem of Windows version WxRuby, because Ruby itself doesn''t have
these
problems.

Does anybody know if anything can be done with it, maybe in future releases?

2008/10/13 Andreas Garn?s <lists at ruby-forum.com>
> ?????? ????????? wrote:
> > Oops, sorry, that should be
> > text.set_default_style(Wx::TextAttr.new(Wx::BLACK,
> > Wx::WHITE, font))
> >
> > OK, I understand, it works now, thanks for the hint!
> >
> > But the main problem still exists: it is very hard to determine when
you
> > use
> > wrong or incomplete method signature, when it just silently fails.Is
it
> > some
> > configuration problem of mine or it is WxRuby feature?
> >
> > 2008/10/13 ?????? ????????? <kirill.likhodedov at gmail.com>
>
> I guess you just have to read the documentation very carefully. I get
> significantly better error messages on Ubuntu, however, eg:
>
> > Wx::Font.new(20)
> ArgumentError: Wrong arguments for overloaded method
''wxFont.new''.
> Possible C/C++ prototypes are:
>    wxFont.new()
>    wxFont.new(int pointSize, int family, int style, int weight, bool
> const underline, wxString const &faceName, wxFontEncoding encoding)
> --
> Posted via http://www.ruby-forum.com/.
> _______________________________________________
> wxruby-users mailing list
> wxruby-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/wxruby-users
>
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?????? ????????? wrote:
>
> Andreas, you definitely have much more descriptive messages.
> It looks like a problem of Windows version WxRuby, because Ruby itself 
> doesn''t have these problems.
>
> Does anybody know if anything can be done with it, maybe in future 
> releases?
The quality of error messages related to wrong types of arguments was 
improved in recent versions of SWIG. I''ll double-check that the next 
windows build is done with the latest version.

But when doing some development on Windows recently I had some similar 
problems -  ie I was getting a segfault where it should be raising an 
exception. Which is pretty annoying b/c it''s hard to track these down. 
I''ll investigate further.

cheers
alex

Thank you very much, Alex.

That would be very great if the problem will be fixed or at least  
improved. :)

25.10.2008, ? 17:45, Alex Fenton ???????(?):
> ?????? ????????? wrote:
>>
>> Andreas, you definitely have much more descriptive messages.
>> It looks like a problem of Windows version WxRuby, because Ruby  
>> itself doesn''t have these problems.
>>
>> Does anybody know if anything can be done with it, maybe in future  
>> releases?
>
> The quality of error messages related to wrong types of arguments  
> was improved in recent versions of SWIG. I''ll double-check that
the
> next windows build is done with the latest version.
>
> But when doing some development on Windows recently I had some  
> similar problems -  ie I was getting a segfault where it should be  
> raising an exception. Which is pretty annoying b/c it''s hard to  
> track these down. I''ll investigate further.
>
> cheers
> alex
> _______________________________________________
> wxruby-users mailing list
> wxruby-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/wxruby-users