[fxruby-users] Fwd: Clipboard problem on Linux

[Andreas Schmidt]

Hi list,

I just found the solution.
If I call super() inside the hide method everything works fine.

def hide()
# do some cleanup stuff here
# ...
super
end


regards,
andy


-------- Original-Nachricht --------
Message-ID: <50640A9F...@siberas.de>
Date: Thu, 27 Sep 2012 10:13:19 +0200
From: Andreas Schmidt <wat...@siberas.de>
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To: fxruby...@rubyforge.org
Subject: Clipboard problem on Linux
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Dear list,

I get a FXRuby crash on a Linux box ( on Windows everything works fine)
when I work with clipboard data. The crash occurs when I try to paste
data from an already closed dialog box. It happens only when I override
the hide() method of an dialog box.


This is the message I get from the programm:
FXRbText::setDNDData: window has not yet been created.
Aborted


Here's the code to reproduce the crash:

--- code ---
#!/usr/bin/env ruby
require 'fox16'

include Fox
class MyText < FXDialogBox

include Responder
def initialize(owner)
# Invoke base class initialize function first

super(owner, "Text", :opts => DECOR_ALL,:width=>300, :height=>150)
@log_text_dt = FXDataTarget.new('This is a crash test.')

@log_viewer = FXText.new(self, :target => @log_text_dt, :selector
=> FXDataTarget::ID_VALUE, :opts => LAYOUT_FILL_X|LAYOUT_FILL_Y)
@log_viewer.editable = true
@log_viewer.enabled = true

end

def hide()
# do some cleanup stuff here
# ...
self.destroy
end

end

class MTTextTest < FXMainWindow
def initialize(app)
# Call base class initializer first
super(app, "Clipboard Crash", :width => 400, :height => 200)
frame = FXVerticalFrame.new(self, :opts => LAYOUT_FILL_X|LAYOUT_FILL_Y)

@textbox = FXText.new(frame, :opts =>
LAYOUT_FILL_X|LAYOUT_FILL_Y|TEXT_AUTOSCROLL)

showButton = FXButton.new(frame, "Open Text Window", :opts =>
FRAME_THICK|FRAME_RAISED|LAYOUT_FILL_X|LAYOUT_TOP|LAYOUT_LEFT)

showButton.connect(SEL_COMMAND) do
begin
mrtk = MyText.new(FXApp.instance)
mrtk.create
mrtk.show(Fox::PLACEMENT_SCREEN)
rescue => bang
puts "!!! could not open manual request"
puts bang
end
end
end

# Create and show the main window
def create
super # Create the windows
show(PLACEMENT_SCREEN) # Make the main window appear
end
end

if __FILE__ == $0
# Construct the application object
application = FXApp.new('ClipBoard Crash', 'FoxTest')

# Construct the main window
scribble = MTTextTest.new(application)

# Create the application
application.create

application.run
end

--- end of code ---


System Infos:
root@bt:~/Desktop# ruby -v
ruby 1.9.2dev (2010-07-02) [i486-linux]
root@bt:~/Desktop# ruby -e "require 'fox16'; puts Fox.fxversion"
1.6.36

Steps to reproduce the crash:
1) open a textbox and copy some data (ctrl-c)
2) close the textbox
3) open a second textbox and paste the data (ctrl-v)
4) crash


Is this a FXRuby bug or my fault?

Or is there another way to catch the hide method? Because I need to
clean-up some threads before the window gets closed.

BTW, I need it for my open-source project http://watobo.sourceforge.net.

Thanks for any hint,
-andy



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[Andreas Schmidt]

[Nataraj S Narayan]

Hi Andy

Didn't get the crash after copying and closing and copying into the
ruby sample app text box.

I am on ruby 1.9.3 p194 and Fox 1.6.46.

regards

Nataraj

[Andreas Schmidt]

Hi Nataraj,

did you try it on Linux?

regards,
-andy

[Nataraj S Narayan]

Yep, Arch Linux.