[Fxruby-users] FXTreeList: Core dump when exiting

[Christian v. M. <chr...@pd...>]

Hello!

On Mon, Jan 12, 2004 at 03:14:23PM +0100, Chris Mueffling wrote:

> As soon as I find some spare time I'll try to break this down into
> a smaller example.

Ok, did it. The problem seems to be the usage of 'addItemLast' to add an item.
If I use 'addItemFirst' instead, no problems.

Just execute the enclosed code and close the window =>

[...]table_test.rb:74: [BUG] Segmentation fault
ruby 1.8.1 (2003-12-25) [i686-linux-gnu]

------- snip snip snip ---------------------------------------------------------------
#!/usr/bin/env ruby

require "fox"
include Fox

class TestTreeWindow < FXMainWindow

  class ProjectTreeItem < FXTreeItem
    def initialize(name, id)
      super(name)
      @id = id
    end
    attr_reader :id
  end # class ProjectTreeItem

  def initialize(app)
    super(app, "Tree Test", nil, nil, DECOR_ALL, 0, 0, 0, 0)
    __build
  end

  def create
    super
    show(PLACEMENT_SCREEN)
  end # def create

  private

  def __build
    @treelist = FXTreeList.new(self, 0, nil, 0,
                               HSCROLLING_OFF|TREELIST_BROWSESELECT|TREELIST_SHOWS_LINES|TREELIST_SHOWS_BOXES|
                               TREELIST_ROOT_BOXES|LAYOUT_FILL_X|LAYOUT_FILL_Y)
    populate_tree
  end

  ##
  # Fill tree with project names.
  #
  def populate_tree

    @projects = [ 
      { :name => "Top 1", :id => 1, :children => [], },
      { :name => "Top 2", :id => 5, :children => [], }
    ]

    @treelist.clearItems
    @projects.each { |project|
      populate_tree_rec(nil, project)
    }
  end
  def populate_tree_rec(parent, project)
    child = @treelist.addItemLast(parent, 
                                  ProjectTreeItem.new(project[:name], project[:id]))
    project[:children].each { |subproject|
      populate_tree_rec(child, subproject)
    }
  end
  
end

# Start the whole thing
if __FILE__ == $0
  # Make application
  application = FXApp.new("TestApp", "FoxTest")
  
  # Make window
  TestTreeWindow.new(application)
  
  # Create app
  application.create
  
  # Run
  application.run

end
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-- 
chris