Description Al Bundy 2018-11-18 08:35:37 EST

Because -XstartOnFirstThread does not work for webstart-applications on osx I've tried to find another solution.

The DispatchTest is a small example how to start a swt-application without -XstartOnFirstThead.
This seems to work very well (also with rcp applications) but unfortunately the whole application hangs if you try to make the application fullscreen.

Has someone an idea how to get also the fullscrenmode to work?

afaik th package com.apple.concurrent was removed in java 9 - so you can try this example class only with java versions up to 8 or get the source from this classes from here: https://github.com/openjdk-mirror/jdk7u-jdk/blob/master/src/macosx/classes/com/apple/concurrent/Dispatch.java

<pre>
import java.awt.Toolkit;
import java.lang.reflect.Method;
import java.util.concurrent.Callable;
import java.util.concurrent.Executor;
import java.util.concurrent.FutureTask;

import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class DispatchTest
{
  public static void main(String[] args)
    throws Exception
  {
    String osName = System.getProperty("os.name");
    // if not a mac return false
    if (!osName.startsWith("Mac") && !osName.startsWith("Darwin"))
    {
      DispatchTest.run();
    }
    else
    {
      try
      {
        Class<?> _c = Class.forName("com.apple.concurrent.Dispatch");
        final Method _get_instance = _c.getMethod("getInstance", null);
        final Object _instance = _get_instance.invoke(null, null);
        final Method _get_executor = _instance.getClass().getMethod("getNonBlockingMainQueueExecutor", null);
        final Executor _executor = (Executor) _get_executor.invoke(_instance, null);
        Toolkit.getDefaultToolkit();
        final FutureTask<Void> _f = new FutureTask<Void>(new Callable<Void>()
        {
          /**
           * {@inheritDoc}
           */
          @Override
          public Void call()
              throws Exception
          {
            DispatchTest.run();
            return null;
          }
        });
        _executor.execute(_f);
        _f.get();
      }
      catch (final Throwable _e)
      {
        _e.printStackTrace();
      }
    }
  }
  
  private static void run()
  {
    try
    {
      final Display display = new Display();
      final Shell shell = new Shell(display);
      shell.setText("Hello, world!");
      shell.open();

      while (!shell.isDisposed())
      {
        if (!display.readAndDispatch())
          display.sleep();
      }

      display.dispose();
    }
    catch (Exception _e)
    {
      _e.printStackTrace();
    }
  }
}

</pre>