October 31, 2008
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);//这一句很关键
        }
        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@gmail.com> http://www.dsource.org/projects/dwin

D 语言-中文(D Chinese): http://www.d-programming-language-china.org/ http://bbs.d-programming-language-china.org/ http://dwin.d-programming-language-china.org/ http://scite4d.d-programming-language-china.org/


October 31, 2008
I cannot try it right now, but perhaps this works? :

void dgRefresh()
{
    auto runOne = new RunOne();
    Thread thread = new Thread( &runOne.run );
    thread.start();
}

October 31, 2008
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@gmail.com> http://www.dsource.org/projects/dwin
>
> D ÓïÑÔ-ÖÐÎÄ(D Chinese): http://www.d-programming-language-china.org/ http://bbs.d-programming-language-china.org/ http://dwin.d-programming-language-china.org/ http://scite4d.d-programming-language-china.org/
>
> 


October 31, 2008
On Fri, 31 Oct 2008 07:56:53 -0400
Frank Benoit <keinfarbton@googlemail.com> wrote:

> I cannot try it right now, but perhaps this works? :
> 
> void dgRefresh()
> {
>     auto runOne = new RunOne();
>     Thread thread = new Thread( &runOne.run );
>     thread.start();
> }
> 

code works:

    void dgRefresh()
    {
        auto runOne = new RunOne();
        Thread thread = new Thread( &runOne.run );

        thread.start();
    }

        class RunOne : Runnable
        {
            uint i;
            void run()
            {
                Stdout("RunOne.run").newline;
                long start = WallClock.now.span.millis;

                void dgSetText(String text)
                {
                    shell.setText(text);
                }
                while ((WallClock.now.span.millis() - start) < runTime)
                {
                    auto text = "wait " ~ to!(String)(i++);
                    shell.getDisplay.syncExec( dgRunnable(&dgSetText, text) );

                    Thread.sleep(1);
                }
            }
        }


My question is :
in dwt-samples\user\torhu_synctest.d, code works:
        auto t = new Thread({Display.getDefault.syncExec(new class Runnable {
            void run() { txt.setText("inside syncExec"); }
        });});


where code here not work:

    void dgRefresh()
    {
        auto runOne = new RunOne();
        Thread thread = new Thread( { shell.getDisplay.syncExec(runOne); } );
        thread.start();
    }



-- 
yidabu <yidabu.spam@gmail.com> http://www.dsource.org/projects/dwin

D 语言-中文(D Chinese): http://www.d-programming-language-china.org/ http://bbs.d-programming-language-china.org/ http://dwin.d-programming-language-china.org/ http://scite4d.d-programming-language-china.org/


October 31, 2008
On Sat, 1 Nov 2008 01:09:58 +0800
"Eric Suen" <eric.suen.tech@gmail.com> wrote:

> 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.


Thanks.


> > -- 
> > yidabu <yidabu.spam@gmail.com> http://www.dsource.org/projects/dwin
> >
> > D 语言-中文(D Chinese): http://www.d-programming-language-china.org/ http://bbs.d-programming-language-china.org/ http://dwin.d-programming-language-china.org/ http://scite4d.d-programming-language-china.org/
> >
> > 
> 
> 


-- 
yidabu <yidabu.spam@gmail.com> http://www.dsource.org/projects/dwin

D 语言-中文(D Chinese): http://www.d-programming-language-china.org/ http://bbs.d-programming-language-china.org/ http://dwin.d-programming-language-china.org/ http://scite4d.d-programming-language-china.org/


November 01, 2008
DWT multi thread sample:

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.Shell;

import tango.core.Thread;
import tango.time.WallClock;
import tango.util.Convert;
import tango.io.Stdout;

import dwt.dwthelper.utils;
import dwt.dwthelper.Runnable;


/**
 * @author tenyears.cn
 * ported to D by D China
 * http://www.d-programming-language-china.org/
 * http://bbs.d-programming-language-china.org/
 */
public class SWTThread {
    private long runTime = 50000; // 50 seconds
    private Shell shell;

    void dgRefresh()
    {
        Thread thread = new Thread( &setGuiText );
        thread.start();
    }

        void setGuiText()
        {
            uint i;
            long start = WallClock.now.span.millis;
            void dgSetText(String text)
            {
                shell.setText(text);
            }
            while ((WallClock.now.span.millis() - start) < runTime)
            {
                auto text = "wait " ~ to!(String)(i++);
                shell.getDisplay.syncExec( dgRunnable(&dgSetText, text) );

                Thread.sleep(1);
            }
        }

    public void startThread()
    {
        try
        {
            Runnable refresh = dgRunnable(&dgRefresh);
            BusyIndicator.showWhile(shell.getDisplay(), refresh);//这一句很关键
        }
        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));
        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();
}




-- 
yidabu <yidabu.spam@gmail.com> http://www.dsource.org/projects/dwin

D 语言-中文(D Chinese): http://www.d-programming-language-china.org/ http://bbs.d-programming-language-china.org/ http://dwin.d-programming-language-china.org/ http://scite4d.d-programming-language-china.org/


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