[mono-vb] Troubleshooting vb.net project in mono

JDean jdean at iastate.edu
Tue Jun 30 15:03:09 EDT 2009


Hello Everyone, 

  I've been developing small educational applications in vb.net (using
studios 2003) and I just started trying to port them to mac and linux, so
I'm pretty new to using mono.  I have a very basic winform application that
I'm trying to run with mono 2.4; essentially a windows form with a button
and a text box, when the button's clicked, the textbox says 'hello world'. 
When running the .exe in mono, it crashes with the following error log: 


Unhandled Exception: System.ArgumentException: GCHandle value cannot be zero
  at System.Runtime.InteropServices.GCHandle.op_Explicit (IntPtr value)
[0x00000] 
  at System.Windows.Forms.XplatUIWin32.GetMessage (System.Windows.Forms.MSG&
msg, IntPtr hWnd, Int32 wFilterMin, Int32 wFilterMax, Boolean blocking)
[0x00000] 
  at System.Windows.Forms.XplatUIWin32.GetMessage (System.Object queue_id,
System.Windows.Forms.MSG& msg, IntPtr hWnd, Int32 wFilterMin, Int32
wFilterMax) [0x00000] 
  at System.Windows.Forms.XplatUI.GetMessage (System.Object queue_id,
System.Windows.Forms.MSG& msg, IntPtr hWnd, Int32 wFilterMin, Int32
wFilterMax) [0x00000] 
  at System.Windows.Forms.Application.RunLoop (Boolean Modal,
System.Windows.Forms.ApplicationContext context) [0x00000] 
  at System.Windows.Forms.Application.Run
(System.Windows.Forms.ApplicationContext context) [0x00000] 
  at System.Windows.Forms.Application.Run (System.Windows.Forms.Form
mainForm) [0x00000] 
  at Helloworld.Form1.Main () [0x00000] 


Again I'm fairly new to using mono, so any ideas on fixing these issues
would be appreciated.  Please let me know if anyone would like to see the
vb.net code.  


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