Example usage for org.eclipse.swt.widgets Button setText

List of usage examples for org.eclipse.swt.widgets Button setText

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Introduction

In this page you can find the example usage for org.eclipse.swt.widgets Button setText.

Prototype

public void setText(String text)

Source Link

Document

Sets the receiver's text.

Usage

From source file:org.eclipse.swt.snippets.Snippet75.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 75");
    shell.setLayout(new RowLayout());

    Composite c1 = new Composite(shell, SWT.BORDER);
    c1.setLayout(new RowLayout());
    Button b1 = new Button(c1, SWT.PUSH);
    b1.setText("B&1");
    Button r1 = new Button(c1, SWT.RADIO);
    r1.setText("R1");
    Button r2 = new Button(c1, SWT.RADIO);
    r2.setText("R&2");
    Button r3 = new Button(c1, SWT.RADIO);
    r3.setText("R3");
    Button b2 = new Button(c1, SWT.PUSH);
    b2.setText("B2");
    List l1 = new List(c1, SWT.SINGLE | SWT.BORDER);
    l1.setItems("L1");
    Button b3 = new Button(c1, SWT.PUSH);
    b3.setText("B&3");
    Button b4 = new Button(c1, SWT.PUSH);
    b4.setText("B&4");

    Composite c2 = new Composite(shell, SWT.BORDER);
    c2.setLayout(new RowLayout());
    Button b5 = new Button(c2, SWT.PUSH);
    b5.setText("B&5");
    Button b6 = new Button(c2, SWT.PUSH);
    b6.setText("B&6");

    List l2 = new List(shell, SWT.SINGLE | SWT.BORDER);
    l2.setItems("L2");

    ToolBar tb1 = new ToolBar(shell, SWT.FLAT | SWT.BORDER);
    ToolItem i1 = new ToolItem(tb1, SWT.RADIO);
    i1.setText("I1");
    ToolItem i2 = new ToolItem(tb1, SWT.RADIO);
    i2.setText("I2");
    Combo combo1 = new Combo(tb1, SWT.READ_ONLY | SWT.BORDER);
    combo1.setItems("C1");
    combo1.setText("C1");
    combo1.pack();/*from   w  w w  .j  av a2  s  . c  o  m*/
    ToolItem i3 = new ToolItem(tb1, SWT.SEPARATOR);
    i3.setWidth(combo1.getSize().x);
    i3.setControl(combo1);
    ToolItem i4 = new ToolItem(tb1, SWT.PUSH);
    i4.setText("I&4");
    ToolItem i5 = new ToolItem(tb1, SWT.CHECK);
    i5.setText("I5");

    Button b7 = new Button(shell, SWT.PUSH);
    b7.setText("B&7");

    Composite c4 = new Composite(shell, SWT.BORDER);
    Composite c5 = new Composite(c4, SWT.BORDER);
    c5.setLayout(new FillLayout());
    new Label(c5, SWT.NONE).setText("No");
    c5.pack();

    Control[] tabList1 = new Control[] { b2, b1, b3 };
    c1.setTabList(tabList1);
    Control[] tabList2 = new Control[] { c1, b7, tb1, c4, c2, l2 };
    shell.setTabList(tabList2);

    shell.pack();
    shell.open();

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

From source file:SWTButtonAction.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setSize(200, 200);//  www .  j a v  a 2s .c  o  m
    shell.setText("Dialogs");
    shell.open();

    final Button opener = new Button(shell, SWT.PUSH);
    opener.setText("Click Me");
    opener.setBounds(20, 20, 50, 25);

    final Text text = new Text(shell, SWT.SHADOW_IN);
    text.setBounds(80, 20, 100, 25);

    final Shell dialog = new Shell(shell, SWT.APPLICATION_MODAL | SWT.DIALOG_TRIM);
    dialog.setText("Dialog");
    dialog.setSize(150, 100);

    final Label label = new Label(dialog, SWT.NONE);
    label.setText("OK to proceed?");
    label.setBounds(35, 5, 100, 20);

    final Button okButton = new Button(dialog, SWT.PUSH);
    okButton.setBounds(20, 35, 40, 25);
    okButton.setText("OK");

    Button cancelButton = new Button(dialog, SWT.PUSH);
    cancelButton.setBounds(70, 35, 40, 25);
    cancelButton.setText("Cancel");

    final boolean[] response = new boolean[1];
    response[0] = true;

    Listener listener = new Listener() {
        public void handleEvent(Event event) {
            if (event.widget == okButton) {
                response[0] = true;
            } else {
                response[0] = false;
            }
            dialog.close();
        }
    };

    okButton.addListener(SWT.Selection, listener);
    cancelButton.addListener(SWT.Selection, listener);

    Listener openerListener = new Listener() {
        public void handleEvent(Event event) {
            dialog.open();
        }
    };

    opener.addListener(SWT.Selection, openerListener);

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

    if (response[0]) {
        text.setText("You clicked OK");
    } else {
        text.setText("You clicked Cancel");
    }

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

From source file:MainClass.java

public static void main(String[] a) {

    final Display display = new Display();
    final Shell shell = new Shell(display);

    shell.setSize(250, 200);// ww  w  .ja  v  a  2  s.c om

    shell.setLayout(new FormLayout());

    Composite controls = new Composite(shell, SWT.NONE);
    FormData data = new FormData();
    data.top = new FormAttachment(0, 0);
    data.left = new FormAttachment(0, 0);
    data.right = new FormAttachment(100, 0);
    controls.setLayoutData(data);

    final Browser browser = new Browser(shell, SWT.NONE);
    data = new FormData();
    data.top = new FormAttachment(controls);
    data.bottom = new FormAttachment(100, 0);
    data.left = new FormAttachment(0, 0);
    data.right = new FormAttachment(100, 0);
    browser.setLayoutData(data);

    controls.setLayout(new GridLayout(6, false));

    Button button = new Button(controls, SWT.PUSH);
    button.setText("Back");
    button.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            browser.back();
        }
    });

    button = new Button(controls, SWT.PUSH);
    button.setText("Forward");
    button.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            browser.forward();
        }
    });

    button = new Button(controls, SWT.PUSH);
    button.setText("Refresh");
    button.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            browser.refresh();
        }
    });

    button = new Button(controls, SWT.PUSH);
    button.setText("Stop");
    button.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            browser.stop();
        }
    });

    final Text url = new Text(controls, SWT.BORDER);
    url.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
    url.setFocus();

    button = new Button(controls, SWT.PUSH);
    button.setText("Go");
    button.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            browser.setUrl(url.getText());
        }
    });

    shell.setDefaultButton(button);

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

From source file:TextLayoutImageControl.java

public static void main(String[] args) {
    Display display = new Display();
    final Shell shell = new Shell(display, SWT.SHELL_TRIM | SWT.DOUBLE_BUFFERED);
    shell.setText("Embedding objects in text");
    final Image[] images = { new Image(display, 32, 32), new Image(display, 20, 40),
            new Image(display, 40, 20) };
    int[] colors = { SWT.COLOR_BLUE, SWT.COLOR_MAGENTA, SWT.COLOR_GREEN };
    for (int i = 0; i < images.length; i++) {
        GC gc = new GC(images[i]);
        gc.setBackground(display.getSystemColor(colors[i]));
        gc.fillRectangle(images[i].getBounds());
        gc.dispose();/* ww w .j a  v a  2  s .c om*/
    }

    final Button button = new Button(shell, SWT.PUSH);
    button.setText("Button");
    button.pack();
    String text = "Here is some text with a blue image \uFFFC, a magenta image \uFFFC, a green image \uFFFC, and a button: \uFFFC.";
    final int[] imageOffsets = { 36, 55, 72 };
    final TextLayout layout = new TextLayout(display);
    layout.setText(text);
    for (int i = 0; i < images.length; i++) {
        Rectangle bounds = images[i].getBounds();
        TextStyle imageStyle = new TextStyle(null, null, null);
        imageStyle.metrics = new GlyphMetrics(bounds.height, 0, bounds.width);
        layout.setStyle(imageStyle, imageOffsets[i], imageOffsets[i]);
    }
    Rectangle bounds = button.getBounds();
    TextStyle buttonStyle = new TextStyle(null, null, null);
    buttonStyle.metrics = new GlyphMetrics(bounds.height, 0, bounds.width);
    final int buttonOffset = text.length() - 2;
    layout.setStyle(buttonStyle, buttonOffset, buttonOffset);

    shell.addListener(SWT.Paint, new Listener() {
        public void handleEvent(Event event) {
            GC gc = event.gc;
            Point margin = new Point(10, 10);
            layout.setWidth(shell.getClientArea().width - 2 * margin.x);
            layout.draw(event.gc, margin.x, margin.y);
            for (int i = 0; i < images.length; i++) {
                int offset = imageOffsets[i];
                int lineIndex = layout.getLineIndex(offset);
                FontMetrics lineMetrics = layout.getLineMetrics(lineIndex);
                Point point = layout.getLocation(offset, false);
                GlyphMetrics glyphMetrics = layout.getStyle(offset).metrics;
                gc.drawImage(images[i], point.x + margin.x,
                        point.y + margin.y + lineMetrics.getAscent() - glyphMetrics.ascent);
            }
            int lineIndex = layout.getLineIndex(buttonOffset);
            FontMetrics lineMetrics = layout.getLineMetrics(lineIndex);
            Point point = layout.getLocation(buttonOffset, false);
            GlyphMetrics glyphMetrics = layout.getStyle(buttonOffset).metrics;
            button.setLocation(point.x + margin.x,
                    point.y + margin.y + lineMetrics.getAscent() - glyphMetrics.ascent);
        }
    });

    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    layout.dispose();
    for (int i = 0; i < images.length; i++) {
        images[i].dispose();
    }
    display.dispose();
}

From source file:Snippet21.java

public static void main(String[] args) {
    Display display = new Display();
    final Color red = display.getSystemColor(SWT.COLOR_RED);
    final Color blue = display.getSystemColor(SWT.COLOR_BLUE);
    Shell shell = new Shell(display);
    Button b = new Button(shell, SWT.PUSH);
    b.setBounds(10, 10, 100, 32);/*from   w w  w . j ava 2 s. co m*/
    b.setText("Button");
    shell.setDefaultButton(b);
    final Canvas c = new Canvas(shell, SWT.BORDER);
    c.setBounds(10, 50, 100, 32);
    c.addListener(SWT.Traverse, new Listener() {
        public void handleEvent(Event e) {
            switch (e.detail) {
            /* Do tab group traversal */
            case SWT.TRAVERSE_ESCAPE:
            case SWT.TRAVERSE_RETURN:
            case SWT.TRAVERSE_TAB_NEXT:
            case SWT.TRAVERSE_TAB_PREVIOUS:
            case SWT.TRAVERSE_PAGE_NEXT:
            case SWT.TRAVERSE_PAGE_PREVIOUS:
                e.doit = true;
                break;
            }
        }
    });
    c.addListener(SWT.FocusIn, new Listener() {
        public void handleEvent(Event e) {
            c.setBackground(red);
        }
    });
    c.addListener(SWT.FocusOut, new Listener() {
        public void handleEvent(Event e) {
            c.setBackground(blue);
        }
    });
    c.addListener(SWT.KeyDown, new Listener() {
        public void handleEvent(Event e) {
            System.out.println("KEY");
            for (int i = 0; i < 64; i++) {
                Color c1 = red, c2 = blue;
                if (c.isFocusControl()) {
                    c1 = blue;
                    c2 = red;
                }
                c.setBackground(c1);
                c.update();
                c.setBackground(c2);
            }
        }
    });
    Text t = new Text(shell, SWT.SINGLE | SWT.BORDER);
    t.setBounds(10, 85, 100, 32);

    Text r = new Text(shell, SWT.MULTI | SWT.BORDER);
    r.setBounds(10, 120, 100, 32);

    c.setFocus();
    shell.setSize(200, 200);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

From source file:org.eclipse.swt.snippets.Snippet363.java

public static void main(String[] args) {
    Display display = new Display();
    errorIcon = display.getSystemImage(SWT.ICON_ERROR);
    Shell shell = new Shell(display);
    shell.setText("Snippet 363");
    shell.setLayout(new GridLayout(2, false));
    shell.setText("LiveRegion Test");

    icon = new Label(shell, SWT.NONE);
    icon.setLayoutData(new GridData(32, 32));

    liveLabel = new Text(shell, SWT.READ_ONLY);
    GC gc = new GC(liveLabel);
    Point pt = gc.textExtent(errorMessage);
    GridData data = new GridData(SWT.FILL, SWT.CENTER, true, false);
    data.minimumWidth = (int) (pt.x + gc.getFontMetrics().getAverageCharacterWidth() * 2);
    gc.dispose();//  w  w  w.  ja  v a  2 s . co  m
    liveLabel.setLayoutData(data);
    liveLabel.setText("");
    liveLabel.getAccessible().addAccessibleAttributeListener(new AccessibleAttributeAdapter() {
        @Override
        public void getAttributes(AccessibleAttributeEvent e) {
            e.attributes = new String[] { "container-live", "polite", "live", "polite", "container-live-role",
                    "status", };
        }
    });

    final Label textFieldLabel = new Label(shell, SWT.NONE);
    textFieldLabel.setText("Type a number:");
    textFieldLabel.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1));

    final Text textField = new Text(shell, SWT.SINGLE | SWT.BORDER);
    textField.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1));

    final Button okButton = new Button(shell, SWT.PUSH);
    okButton.setText("OK");
    okButton.setLayoutData(new GridData(SWT.END, SWT.CENTER, false, false, 2, 1));
    okButton.setEnabled(false);

    textField.addModifyListener(e -> {
        boolean isNumber = false;
        String textValue = textField.getText();
        try {
            Integer.parseInt(textValue);
            isNumber = true;
            setMessageText(false, "Thank-you");
        } catch (NumberFormatException ex) {
            if (textValue.isEmpty()) {
                setMessageText(false, "");
            } else {
                setMessageText(true, "Error: Number expected.");
            }
        }
        okButton.setEnabled(isNumber);
    });

    textField.setFocus();
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

From source file:org.eclipse.swt.snippets.Snippet330.java

public static void main(String[] args) {

    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 330");
    shell.setLayout(new GridLayout(BUTTONS_PER_ROW, true));

    final Browser browser;
    try {//w  ww.j  a  v a2  s. co  m
        browser = new Browser(shell, SWT.NONE);
    } catch (SWTError e) {
        System.out.println("Could not instantiate Browser: " + e.getMessage());
        display.dispose();
        return;
    }
    GridData data = new GridData(GridData.FILL_BOTH);
    data.horizontalSpan = BUTTONS_PER_ROW;
    browser.setLayoutData(data);

    {
        Button setHeaders = new Button(shell, SWT.PUSH);
        setHeaders.setText("Send custom headers");
        setHeaders.addListener(SWT.Selection,
                event -> browser.setUrl("http://www.ericgiguere.com/tools/http-header-viewer.html", null,
                        new String[] { "User-agent: SWT Browser", "Custom-header: this is just a demo" }));
    }

    {
        Button postTextPlain = new Button(shell, SWT.PUSH);
        postTextPlain.setText("Post data as 'text/plain'");
        postTextPlain.addListener(SWT.Selection, event -> browser.setUrl("http://httpbin.org/post",
                "Plain text passed as postData", new String[] { "content-type: text/plain" }));
    }

    {
        Button postTextPlainUtf8 = new Button(shell, SWT.PUSH);
        postTextPlainUtf8.setText("Post data as 'text/plain' and specify encoding.");
        postTextPlainUtf8.addListener(SWT.Selection, event -> browser.setUrl("http://httpbin.org/post",
                "Plain text passed as postData", new String[] { "content-type: text/plain; charset=UTF-8" }));
    }

    {
        Button postUrlEncoded = new Button(shell, SWT.PUSH);
        postUrlEncoded.setText("Post data with url encoding key=value");
        postUrlEncoded.addListener(SWT.Selection,
                event -> browser.setUrl("http://httpbin.org/post", "MyKey1=MyValue1&MyKey2=MyValue2",
                        new String[] { "content-type: application/x-www-form-urlencoded" }));
    }

    {
        Button postDataBugzilla = new Button(shell, SWT.PUSH);
        postDataBugzilla.setText("Send post data to bugzilla. url encoding is used as default");
        postDataBugzilla.addListener(SWT.Selection, event -> browser.setUrl(
                "https://bugs.eclipse.org/bugs/buglist.cgi",
                "emailassigned_to1=1&bug_severity=enhancement&bug_status=NEW&email1=platform-swt-inbox&emailtype1=substring",
                null));
    }

    {
        Button postDataBugzillaLongQuery = new Button(shell, SWT.PUSH);
        postDataBugzillaLongQuery.setText("Send post data to bugzilla. Very slow response");
        postDataBugzillaLongQuery.addListener(SWT.Selection,
                event -> browser.setUrl("https://bugs.eclipse.org/bugs/buglist.cgi",
                        "emailassigned_to1=1&bug_severity=enhancement&bug_status=NEW", null));
    }

    shell.setSize(1000, 1000);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

From source file:Snippet134.java

public static void main(String[] args) {
    final Display display = new Display();
    // Shell must be created with style SWT.NO_TRIM
    final Shell shell = new Shell(display, SWT.NO_TRIM | SWT.ON_TOP);
    shell.setBackground(display.getSystemColor(SWT.COLOR_RED));
    // define a region that looks like a key hole
    Region region = new Region();
    region.add(circle(67, 67, 67));//w w  w  .  j a  va 2s. c o  m
    region.subtract(circle(20, 67, 50));
    region.subtract(new int[] { 67, 50, 55, 105, 79, 105 });
    // define the shape of the shell using setRegion
    shell.setRegion(region);
    Rectangle size = region.getBounds();
    shell.setSize(size.width, size.height);
    // add ability to move shell around
    Listener l = new Listener() {
        Point origin;

        public void handleEvent(Event e) {
            switch (e.type) {
            case SWT.MouseDown:
                origin = new Point(e.x, e.y);
                break;
            case SWT.MouseUp:
                origin = null;
                break;
            case SWT.MouseMove:
                if (origin != null) {
                    Point p = display.map(shell, null, e.x, e.y);
                    shell.setLocation(p.x - origin.x, p.y - origin.y);
                }
                break;
            }
        }
    };
    shell.addListener(SWT.MouseDown, l);
    shell.addListener(SWT.MouseUp, l);
    shell.addListener(SWT.MouseMove, l);
    // add ability to close shell
    Button b = new Button(shell, SWT.PUSH);
    b.setBackground(shell.getBackground());
    b.setText("close");
    b.pack();
    b.setLocation(10, 68);
    b.addListener(SWT.Selection, new Listener() {
        public void handleEvent(Event e) {
            shell.close();
        }
    });
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    region.dispose();
    display.dispose();
}

From source file:org.eclipse.swt.snippets.Snippet212.java

public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("Snippet 212");
    shell.setLayout(new GridLayout());
    styledText = new StyledText(shell, SWT.WRAP | SWT.BORDER);
    styledText.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
    styledText.setText(text);/* w  ww  .ja  v  a2s . c om*/
    int offset = text.indexOf("\uFFFC", 0);
    addImage(display.getSystemImage(SWT.ICON_QUESTION), offset);
    offset = text.indexOf("\uFFFC", offset + 1);
    addImage(display.getSystemImage(SWT.ICON_INFORMATION), offset);

    // use a verify listener to dispose the images
    styledText.addVerifyListener(event -> {
        if (event.start == event.end)
            return;
        String text = styledText.getText(event.start, event.end - 1);
        int index = text.indexOf('\uFFFC');
        while (index != -1) {
            StyleRange style = styledText.getStyleRangeAtOffset(event.start + index);
            if (style != null) {
                Image image = (Image) style.data;
                if (image != null)
                    image.dispose();
            }
            index = text.indexOf('\uFFFC', index + 1);
        }
    });
    // draw images on paint event
    styledText.addPaintObjectListener(event -> {
        StyleRange style = event.style;
        Image image = (Image) style.data;
        if (!image.isDisposed()) {
            int x = event.x;
            int y = event.y + event.ascent - style.metrics.ascent;
            event.gc.drawImage(image, x, y);
        }
    });
    styledText.addListener(SWT.Dispose, event -> {
        StyleRange[] styles = styledText.getStyleRanges();
        for (int i = 0; i < styles.length; i++) {
            StyleRange style = styles[i];
            if (style.data != null) {
                Image image = (Image) style.data;
                if (image != null)
                    image.dispose();
            }
        }
    });
    Button button = new Button(shell, SWT.PUSH);
    button.setText("Add Image");
    button.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false));
    button.addListener(SWT.Selection, event -> {
        FileDialog dialog = new FileDialog(shell);
        String filename = dialog.open();
        if (filename != null) {
            try {
                Image image = new Image(display, filename);
                int offset1 = styledText.getCaretOffset();
                styledText.replaceTextRange(offset1, 0, "\uFFFC");
                addImage(image, offset1);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });
    shell.setSize(400, 400);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

From source file:org.eclipse.swt.snippets.Snippet134.java

public static void main(String[] args) {
    final Display display = new Display();
    //Shell must be created with style SWT.NO_TRIM
    final Shell shell = new Shell(display, SWT.NO_TRIM | SWT.ON_TOP);
    shell.setText("Snippet 134");
    shell.setBackground(display.getSystemColor(SWT.COLOR_RED));
    //define a region that looks like a key hole
    Region region = new Region();
    region.add(circle(67, 67, 67));/*from w  w w  . ja v a2  s.  c  o m*/
    region.subtract(circle(20, 67, 50));
    region.subtract(new int[] { 67, 50, 55, 105, 79, 105 });
    //define the shape of the shell using setRegion
    shell.setRegion(region);
    Rectangle size = region.getBounds();
    shell.setSize(size.width, size.height);
    //add ability to move shell around
    Listener l = new Listener() {
        /** The x/y of the MouseDown, relative to top-left of the shell. */
        Point origin;

        @Override
        public void handleEvent(Event e) {
            switch (e.type) {
            case SWT.MouseDown:
                Point point = shell.toDisplay(e.x, e.y);
                Point loc = shell.getLocation();
                origin = new Point(point.x - loc.x, point.y - loc.y);
                break;
            case SWT.MouseUp:
                origin = null;
                break;
            case SWT.MouseMove:
                if (origin != null) {
                    Point p = display.map(shell, null, e.x, e.y);
                    shell.setLocation(p.x - origin.x, p.y - origin.y);
                }
                break;
            }
        }
    };
    shell.addListener(SWT.MouseDown, l);
    shell.addListener(SWT.MouseUp, l);
    shell.addListener(SWT.MouseMove, l);
    //add ability to close shell
    Button b = new Button(shell, SWT.PUSH);
    b.setBackground(shell.getBackground());
    b.setText("close");
    b.pack();
    b.setLocation(10, 68);
    b.addListener(SWT.Selection, e -> shell.close());
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    region.dispose();
    display.dispose();
}