| Need helps dnd !!! [message #13214] |
Sun, 14 July 2002 18:28  |
Eclipse User |
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Originally posted by: asmv.free.fr
Hi,
I'm using GEF. I run into a problem, I cannot figure out where is wrong. I
need your light.
I develop a diagram editor much like LogicEditor example. When I load the
diagram first time, everyting is fine. But since the second time and when
I move the figure in the diagram, and then save in the file, I got
following message:
When I save my diagram
Unhandled exception caught in event loop.
Reason:
Failed to execute runnable (java.lang.NullPointerException)
*** Stack trace of contained exception ***
Reason:
java.lang.NullPointerException
Could someone tell me what's wrong ? Or How to identify where is error. I
know there is the debug mode flags in GEF, but I do'nt know how to turn
them on.
Thanks
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| Re: Need helps dnd !!! [message #13326 is a reply to message #13243] |
Mon, 15 July 2002 12:38  |
| Eclipse User |
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Originally posted by: asmv.free.fr
Hi Gunnar,
Thanks for your repling.
Gunnar Wagenknecht wrote:
> Hi!
> "Julien" <asmv@free.fr> schrieb im Newsbeitrag
> news:agstu8$u22$1@rogue.oti.com...
> > Could someone tell me what's wrong ? Or How to identify where is error. I
> > know there is the debug mode flags in GEF, but I do'nt know how to turn
> > them on.
> Well, probably there is a problem with you model, edit parts or commands ;)
> You need to look in the eclipse log file. If you can't find it, try to move
> the existing log first and then start eclipse. Thus, you will have a new log
> created that should contain only your exceptions.
In the log file, there is indeed a stack message as:
org.eclipse.swt.SWTException: Failed to execute runnable
(java.lang.NullPointerException)
at org.eclipse.swt.SWT.error(SWT.java:1887)
at
org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchr onizer.java:96)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.jav a:1504)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :1292)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.jav a:1085)
at org.eclipse.ui.internal.Workbench.run(Workbench.java:1068)
at
org.eclipse.core.internal.boot.InternalBootLoader.run(Intern alBootLoader.java:739)
at org.eclipse.core.boot.BootLoader.run(BootLoader.java:432)
at EclipseRuntimeLauncher.main(EclipseRuntimeLauncher.java:24)
!ENTRY org.eclipse.core.resources 1 4 Jul 14, 2002 13:36:55.608
Un fortunately, it doesn't gibe me more information.
> Anyway it may be necessary to debug your application to find the problem.
In fact, I spent two days on debugging this problem. I put the breakpoints
in execute() of each commandes. But the system doesn't fail into at all. I
noticed my application work fine anyway and it happens only I use DnD to
move a Figure in GraphicalView.
Julien
> Cu, Gunnar
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| Re: Need helps dnd !!! - case closed [message #13613 is a reply to message #13468] |
Tue, 16 July 2002 06:45 |
| Eclipse User |
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Originally posted by: asmv.free.fr
Randy Hudson wrote:
> Are you *really* using native drag and drop, or are you just dragging a
> figure using the GEF Tools (which just use MouseMove/Button events).
Hi all,
Thanks for your concernes.
I'd succeeded in fixing this problem. It is because my previous closed
editor doesn't call dispose(). I'm shamed in my self.
Julien
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