DWT multi thread issue

[Eric Suen]

shell.setText( "wait " ~ to!(String)(i++) );

only works on GUI thread, otherwise it will throw exception,

you should using display.synExec(...); make sure it be called
in GUI thread.

> I ported a SWT multi thread sample to D, but it not worked, and body help?
> tested with recent dwt-win on Windows XP, compile by DMD 1.036, click on the 
> button, nothing happen:
>
>
> import dwt.DWT;
> import dwt.widgets.Listener;
> import dwt.widgets.Event;
> import dwt.custom.BusyIndicator;
> import dwt.events.SelectionAdapter;
> import dwt.events.SelectionEvent;
> import dwt.layout.GridData;
> import dwt.layout.GridLayout;
> import dwt.widgets.Button;
> import dwt.widgets.Display;
> import dwt.widgets.List;
> import dwt.widgets.Shell;
>
> import tango.core.Thread;
> import tango.time.WallClock;
> import tango.util.Convert;
> import tango.io.Stdout;
>
> import dwt.dwthelper.utils;
>
>
> /**
> * @author tenyears.cn
> */
> public class SWTThread {
>    private int size = 10; //
>    private long runTime = 50000; // 50 seconds
>    private List list;
>    private Shell shell;
>
>    void dgRefresh()
>    {
>        Thread thread = new Thread( {new RunOne();} );
>        thread.start();
>    }
>
>        class RunOne : Runnable
>        {
>            uint i;
>            void run()
>            {
>                long start = WallClock.now.span.millis;
>                shell.setText( "wait " ~ to!(String)(i++) );
>                while ((WallClock.now.span.millis() - start) < runTime)
>                {
>                    shell.setText( "wait " ~ to!(String)(i++) );
>                    Thread.sleep(10);
>                }
>            }
>        }
>
>    public void startThread()
>    {
>        try
>        {
>            Runnable refresh = dgRunnable(&dgRefresh);
>            BusyIndicator.showWhile(shell.getDisplay(), refresh);//ÕâÒ»¾äºÜ¹Ø¼ü
>        }
>        catch(Exception e)
>        {Stdout.formatln("startThread catch {}", e.msg);}
>    }
>
>
>    void onStartBtn(Event event)
>    {
>        try
>        {
>            startThread();
>        }
>        catch(Exception e)
>        {Stdout.formatln("onStartBtn catch {}", e.msg);}
>
>    }
>
>    public Shell open(Display display)
>    {
>        shell = new Shell(display, DWT.DIALOG_TRIM | DWT.MIN);
>        shell.setText("SWT Thread Test");
>        shell.setLayout(new GridLayout(1, true));
>        list = new List(shell, DWT.BORDER);
>        list.setLayoutData(new GridData(DWT.FILL, DWT.FILL, true, true));
>        for (int index = 0; index < size; index++)
>          list.add("String " ~ to!(String) (index + 1));
>        Button startBtn = new Button(shell, DWT.PUSH);
>        startBtn.setLayoutData(new GridData(DWT.FILL, DWT.CENTER, true, 
> false));
>        startBtn.setText("Start");
>
>        startBtn.addListener(DWT.Selection, dgListener(&onStartBtn));
>        shell.setSize(400, 300);
>        shell.open();
>        return shell;
>    }
>
>
> }
>
> public void main(String[] args) {
>    Display display = new Display();
>    SWTThread application = new SWTThread();
>    Shell shell = application.open(display);
>    while (!shell.isDisposed()) {
>      if (!display.readAndDispatch())
>        display.sleep();
>    }
>    display.dispose();
> }
>
>
> SWT code:
> http://blog.csdn.net/baobeiSimple/archive/2007/08/22/1753910.aspx
>
>
>
>
> -- 
> yidabu <yidabu.spam at gmail.com>
> http://www.dsource.org/projects/dwin
>
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>
>