[news.eclipse.platform.swt] Re: Runnable in synchExec() never gets start

[Rich Kulp <richkulp@xxxxxxxxxxxxxxxxxx>]

I'm not exactly sure but one thing is your mTread is useless. You are 
calling the shutdown hook from both the syncExec AND the Thread (because 
you passed the shutdown runnable into the Thread's constructor, so it 
becomes the runnable for the thread). And the thread will fail if it 
ever does run because it is trying to do things to the shell and it is 
not the UI thread (by definition the thread is not the UI thread since 
you created it yourself and didn't create the display on it).

Second question is the thread you are calling display.syncExec(shutdown) 
the UI thread? If it isn't then maybe the UI thread is blocked and not 
responding. In that case the syncExec which just wait until the UI 
thread is unblocked.


>      ShutdownHook shutdown = new ShutdownHook();       Thread mThread = 
> new Thread(shutdown,"SHUTDOWNTHREAD");
>      myScanner.setStatusMessage("The end is near any moment now");       
> myScanner.unLoad();       //shell.dispose();
>      if (display != null && !display.isDisposed()) {
>          myScanner.setStatusMessage("I am about to dispose of this 
> application");
>          display.syncExec(shutdown);
>          mThread.start();
>      } else      {
>          myScanner.setStatusMessage("U have already disposed of the 
> application here...go Home");
>      }
> .....

--
Thanks,
Rich Kulp