[vtkusers] Swing Based vtkPanel

[anast.jm at pg.com]

Satheesh....I'm not even getting that far with SimpleVTK......the window and
button display okay but even if I do nothing the app crashes in 1 sec...just too
new to figure this out on my own...john

An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : EXCEPTION_ACCESS_VIOLATION occurred at PC=0x77f67616
Function name=RtlLeaveCriticalSection
Library=C:\WINNT\System32\ntdll.dll

Current Java thread:
        at vtkPanel.UnLock(Native Method)
        at vtkPanel.Render(vtkpanel.java:82)
        at vtkPanel.paint(vtkpanel.java:90)
        at sun.awt.RepaintArea.paint(Unknown Source)
        at sun.awt.windows.WComponentPeer.handleEvent(Unknown Source)
        at java.awt.Component.dispatchEventImpl(Unknown Source)
        at java.awt.Component.dispatchEvent(Unknown Source)
        at java.awt.EventQueue.dispatchEvent(Unknown Source)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)

        at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.run(Unknown Source)


                                                                
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From: Satheesh Maheswaran <s.maheswaran at eastman.ucl.ac.uk>@public.kitware.com on
03/05/2002 03:23 PM GMT
                                                                                                          
                                 Satheesh Maheswaran           To:   "Gopalakrishnan, Gowri"              
 <s.maheswaran at eastman.ucl.ac.uk>@public.kitware.com        <Gowri.Gopalakrishnan at inteq.com>              
                                                               Cc:   "'da5y-ngmn at asahi-net.or.jp'"        
                                                            <da5y-ngmn at asahi-net.or.jp>,                  
         Sent by:  vtkusers-admin at public.kitware.com        vtkusers at public.kitware.com (bcc: John        
                                 03/05/2002 10:23 AM        Anast-JM/PGI)                                 
                                                       Subject:      Re: [vtkusers] Swing Based vtkPanel  
                                                                                                          
                                                                                                          




hello users

I am trying to get vtkPanel.java work with SimpleVTK.java given with VTK. Its in
vtk/wrapping/java

All works, and the panel gets displayed with cone and an exit button.  Here awt
and swing
components are mixed, and the vtkPanel.java extends Canvas, which I think is
awt.

So when i run it and try to interact with it, all key events work and the exit
button work,
but when trying the mouse events. like zooming, it crashes :)

has anyone come across the same problem !!! or may be even a solution for the
problem !!

satheesh

"Gopalakrishnan, Gowri" wrote:

> If you look in the sun's web site on JNI (java native interface) and the
> native code for vtkPanel.java you will see that they are quite identical.
> It used to be that you could grab drawing surface information and the window
> handle only from canvas (it is a undocumented codes in jdk). But I have come
> across something similar in Swing. In vtk 3.2 it is done using canvas, but
> in vtk4.0 I do not know. You cannot use anything else other than canvas (now
> a swing component - I forgot which )to get this information from sun's jdk.
>
> Also with your swing problem - even if you got it to work now you might end
> up with strange behaviours in swing components when they are put on the awt
> component. Event handling especially can be troublesome. If you have not
> done too much dev. already it is a good/wise idea to change to completely
> swing. Mixing awt and swing leads to frustration.
>
> Gowri
>
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