Cobra Forums

Posted: **Wed Mar 05, 2008 1:00 pm**

When I try to compile the Gtk# example below I get an internal compiler error. Because the members of the instantiated Gtk.Window class cannot be accessed directly, the only way to get it to work is to use the 'sharp' prefix:

"""
gtk-test.cobra - Gtk# example.

To compile:
  cobra -v:2 -compile -lib:/usr/lib/mono/gtk-sharp-2.0/ -r:gtk-sharp.dll gtk-test.cobra

To run:
  mono gtk-test.exe
"""

use Gtk

class Program

    def main is shared
        Gtk.Application.init
        
        window = Gtk.Window('A Window')
        window.show          # FAILS
#       sharp'window.Show()' # OK
        
        Gtk.Application.run

Compiler message:

Code: Select all: Cobra Command Line 0.7.4 Copyright (C) 2003-2008 by Cobra Language LLC. OS Version: Unix 2.6.22.17 CLR Platform: Mono CLR Version: 2.0.50727.42 ... error: COBRA INTERNAL ERROR / ArgumentException / An element with the same key already exists in the dictionary.An element with the same key already exists in the dictionary.An element with the same key already exists in the dictionary.An element with the same key already exists in the dictionary. Compilation failed - 1 error, 0 warnings

What is the problem?

Posted: **Wed Mar 05, 2008 1:31 pm**

I don't know yet, but will take a look tonight. Thanks for the report.

Posted: **Wed Mar 05, 2008 8:24 pm**

Well I don't have GTK# and when I go to download it I'm told that I already have it. Or rather, I'm told that Mono 1.2.6 has it which is what I'm already running...

I've posted to gtk-sharp-list for help. Until then, can you run your program again and send me the output directly to contact -AT- cobralang -DOT- com? But with -reveal-internal-exceptions added to the command line.

Thanks.

Posted: **Mon Mar 17, 2008 10:47 am**

How about using the same method name as in your C# code. Did you try "windows.Show" (with capital S) ?

window.show # FAILS
# sharp'window.Show()' # OK

Posted: **Mon Mar 17, 2008 11:05 am**

I forgot to update this thread. Some of the GTK# troubleshooting took place via direct email and fixes have all been checked in.

Using GTK# should work fine now if you're running from the source:
http://cobra-language.com/source/

See Cobra-Workspace/HowTo/390-GTK.cobra

If you have any further problems, let me know.

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