wxruby users - Aug 2004 - Drawing

Anyone know how to draw in wxRuby?  I want to draw a graph, and have
it update as new data comes in.  I see stuff about Device Contexts,
but I can''t find anything about how to use them, associate them with a
panel, or anything like that.

-Kurt

Hi Kurt

Here''s a quick example of how to draw primitives onto a Device Context.
WxWidgets also has a specialised class WxPlotWindow, but I don''t think 
that''s available yet in WxRuby.

http://wxwidgets.org/manuals/2.4.2/wx296.htm#wxplotwindow

cheers
alex

----------------
require ''wxruby''

class MyDrawingFrame < Wx::Frame
   def initialize(*args)
     super(*args)
     evt_paint { on_paint }
   end
   def on_paint
     paint do | dc |
       dc.clear
       dc.draw_line( 0, 0, 50, 100)
       dc.draw_line( 50, 100, 100, 75)
       dc.draw_text( ''a label'', 52, 102)
     end
   end
end

class MyApp < Wx::App
   def on_init()
     frame = MyDrawingFrame.new(nil, -1, ''Drawing'')
     frame.set_client_size( Wx::Size.new(200,200))
     frame.show()
   end
end

MyApp.new().main_loop()



Kurt Dresner wrote:
> Anyone know how to draw in wxRuby?  I want to draw a graph, and have
> it update as new data comes in.  I see stuff about Device Contexts,
> but I can''t find anything about how to use them, associate them
with a
> panel, or anything like that.
> 
> -Kurt
> _______________________________________________
> wxruby-users mailing list
> wxruby-users@rubyforge.org
> http://rubyforge.org/mailman/listinfo/wxruby-users
> 
>