[Fxruby-users] Segmentation fault when changing the icon for a button

[Carsten E. <ca...@ci...>]

Hi,

I'm banging my head against this problem for days now: I have a button 
which displays an icon and then when the button is pressed it should 
display another icon. So the first icon is displayed fine but when I 
press the button the app chrashes with a segmentation fault. I'm testing 
this with the 'Pragmatic Installer 1.8.0-10' on Windows 2000.

Here's the code:
#------------------------------------------

require 'fox'
include Fox
class MainWindow < FXMainWindow
  # load a png image from file
  def loadIcon(filename)
    begin
      icon = nil
      File.open(filename+".png", "rb") { |f|
        icon = FXPNGIcon.new(getApp(), f.read)
      }
      icon
    rescue
      raise RuntimeError, "Couldn't load icon: #{filename}"
    end
  end
  # initialize the window
  def initialize(app)
    super(app, "Test", nil, nil, DECOR_ALL, 0, 0, 0,0, 0, 0)
    button = FXButton.new(self,"")
    # set the buttons icon to the first image -> works well.
    button.icon = loadIcon("first")
    # when the button is pressed, change the icon
    # to the second image -> BOOM!
    button.connect(SEL_COMMAND) { button.icon = loadIcon("second") }
    end
  # create the window
  def create
    super
    show(PLACEMENT_SCREEN)
  end
end
# create and run the application
app = FXApp.new("Test", "Test")
MainWindow.new(app)
app.create
app.run
#------------------------------------------

It also doesn't work for FXlabel and FXImageView. What am I doing wrong 
here?????? Help!

Carsten.