Bonjour,
j'essai d'implementer un ScrolledComposite.

Le but étant de faire apparaitre une scroll sur le composite, quand les nouveau composant apparaissant (suite à une action de boutons), dépasse la largeur de la fenetre.
Hors dans mon cas, le scroll horizontal n'apparait jamais.

Voici le code :


Code : Sélectionner tout - Visualiser dans une fenêtre à part
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        wizard = (SetLocalWeightWizard) getWizard();
        UnitSystem unitSystem = wizard.getRunnable().getUnitSystem();
        int dimension = wizard.getDimension();
        Composite composite = new Composite(parent, SWT.NONE);
        GridLayout layout = new GridLayout(1, false);
        layout.marginHeight = 0;
        layout.marginWidth = 0;
        composite.setLayout(layout);
 
        final Composite selectionComposite = new Composite(composite, SWT.NONE);
        layout = new GridLayout(1, false);
        selectionComposite.setLayout(layout);
        selectionComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 
        Group groupFrequency = new Group(selectionComposite, SWT.NONE);
        GridLayout groupLayout = new GridLayout();
        groupFrequency.setLayout(groupLayout);
 
        groupFrequency.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 
        frequencyButton = new Button(groupFrequency, SWT.RADIO);
        frequencyButton.setText(SettingsOptions.FREQUENCY.getDescription());
        frequencyButton.setSelection(true);
        Composite frequencyComposite = new Composite(groupFrequency, SWT.NONE);
        frequencyComposite.setLayout(new GridLayout(3, false));
        frequencyText = new Text(frequencyComposite, SWT.RIGHT | SWT.BORDER);
        GridData gridData = new GridData();
        gridData.grabExcessHorizontalSpace = true;
        gridData.minimumWidth = 70;
        frequencyText.setLayoutData(gridData);
        frequencyText.setTextLimit(10);
        frequencyText.setText("1"); //$NON-NLS-1$
        Label label = new Label(frequencyComposite, SWT.NONE);
        label.setText("/"); //$NON-NLS-1$
        comboFrequency = new Combo(frequencyComposite, SWT.DROP_DOWN | SWT.MULTI | SWT.V_SCROLL
                | SWT.H_SCROLL | SWT.READ_ONLY);
        comboFrequency.add(frequencyTime[0]);
        comboFrequency.add(frequencyTime[1]);
        comboFrequency.add(frequencyTime[2]);
        comboFrequency.select(0);
 
        frequencyButton.addSelectionListener(new SelectionListener() {
            public void widgetSelected(SelectionEvent e) {
                boolean isSelected = frequencyButton.getSelection();
                frequencyText.setEnabled(isSelected);
                comboFrequency.setEnabled(isSelected);
                dateBeginChooser.setEnabled(!isSelected);
                dateEndChooser.setEnabled(!isSelected);
                timeIntervalButton.setSelection(!isSelected);
                propertyIntervalButton.setSelection(!isSelected);
            }
 
            public void widgetDefaultSelected(SelectionEvent e) {
                widgetSelected(e);
            }
        });
 
        final Group groupTime = new Group(selectionComposite, SWT.NONE);
        groupLayout = new GridLayout();
        groupTime.setLayout(groupLayout);
        groupTime.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
        gridData = new GridData();
        gridData.grabExcessHorizontalSpace = true;
        gridData.minimumWidth = 150;
 
        timeIntervalButton = new Button(groupTime, SWT.RADIO);
        timeIntervalButton.setText(SettingsOptions.TIME.getDescription());
        timeIntervalButton.setSelection(false);
        timeIntervalButton.addSelectionListener(new SelectionListener() {
            public void widgetSelected(SelectionEvent e) {
                boolean isSelected = timeIntervalButton.getSelection();
                dateBeginChooser.setEnabled(isSelected);
                dateEndChooser.setEnabled(isSelected);
                propertyMinText.setEnabled(!isSelected);
                propertyMaxText.setEnabled(!isSelected);
                frequencyText.setEnabled(!isSelected);
                comboFrequency.setEnabled(!isSelected);
                frequencyButton.setSelection(!isSelected);
                propertyIntervalButton.setSelection(!isSelected);
            }
 
            public void widgetDefaultSelected(SelectionEvent e) {
                widgetSelected(e);
            }
        });
 
        ScrolledComposite scrolledComposite = new ScrolledComposite(groupTime, SWT.H_SCROLL
                | SWT.NO_FOCUS);
        scrolledComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
        scrolledComposite.setLayout(groupLayout);
 
        final Composite timeComposite = new Composite(scrolledComposite, SWT.NONE);
        layout = new GridLayout(compteurLayout, false);
        timeComposite.setLayout(layout);
        timeComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 
        Label dateBeginLabel = new Label(timeComposite, SWT.NONE);
        dateBeginLabel.setText(AutomatedHistoryMatchMessages.SetLocalWeightWizardPage_label_begin);
        dateBeginChooser = new SwtComboCalendar(timeComposite, SWT.NONE, TimeZone
                .getTimeZone("GMT")); //$NON-NLS-1$
        dateBeginChooser.setLayoutData(gridData);
        dateBeginChooser.setDate(dateMin);
 
        Label maximumLabel = new Label(timeComposite, SWT.NONE);
        maximumLabel.setText(AutomatedHistoryMatchMessages.SetLocalWeightWizardPage_label_end);
        dateEndChooser = new SwtComboCalendar(timeComposite, SWT.NONE, TimeZone.getTimeZone("GMT")); //$NON-NLS-1$
        dateEndChooser.setLayoutData(gridData);
        dateEndChooser.setDate(dateMax);
 
        scrolledComposite.setMinSize(timeComposite.getSize());
        scrolledComposite.setAlwaysShowScrollBars(false);
        scrolledComposite.setExpandHorizontal(true);
        scrolledComposite.setExpandVertical(true);
        scrolledComposite.setContent(timeComposite);
 
        Button boutonAddInterval = new Button(groupTime, SWT.NONE);
        boutonAddInterval.setText("Add a new interval");
        boutonAddInterval.setLayoutData(gridData);
        boutonAddInterval.addSelectionListener(new SelectionListener() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                // TODO Auto-generated method stub
                GridData gridData = new GridData();
                compteurLayout = compteurLayout + 2;
                GridLayout layout = new GridLayout(compteurLayout, false);
                timeComposite.setLayout(layout);
                timeComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
                Label dateBeginLabel = new Label(timeComposite, SWT.NONE);
                dateBeginLabel
                        .setText(AutomatedHistoryMatchMessages.SetLocalWeightWizardPage_label_begin);
                SwtComboCalendar dateBeginChooserbis = new SwtComboCalendar(timeComposite,
                        SWT.NONE, TimeZone.getTimeZone("GMT")); //$NON-NLS-1$
                dateBeginChooserbis.setLayoutData(gridData);
                dateBeginChooserbis.setDate(dateMin);
 
                Label maximumLabel = new Label(timeComposite, SWT.NONE);
                maximumLabel
                        .setText(AutomatedHistoryMatchMessages.SetLocalWeightWizardPage_label_end);
                SwtComboCalendar dateEndChooserbis = new SwtComboCalendar(timeComposite, SWT.NONE,
                        TimeZone.getTimeZone("GMT")); //$NON-NLS-1$
                dateEndChooserbis.setLayoutData(gridData);
                dateEndChooserbis.setDate(dateMax);
                timeComposite.layout();
 
            }
 
            @Override
            public void widgetDefaultSelected(SelectionEvent e) {
                // TODO Auto-generated method stub
 
            }
        });
 
        timeIntervalButton.setSelection(false);
        dateBeginChooser.setEnabled(false);
        dateEndChooser.setEnabled(false);
 
        Group groupProperty = new Group(selectionComposite, SWT.NONE);
        groupLayout = new GridLayout();
        groupProperty.setLayout(groupLayout);
        groupProperty.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 
        propertyIntervalButton = new Button(groupProperty, SWT.RADIO);
        propertyIntervalButton.setText(SettingsOptions.PROPERTY.getDescription());
        propertyIntervalButton.addSelectionListener(new SelectionListener() {
            public void widgetSelected(SelectionEvent e) {
                boolean isSelected = propertyIntervalButton.getSelection();
                propertyMinText.setEnabled(isSelected);
                propertyMaxText.setEnabled(isSelected);
                dateBeginChooser.setEnabled(!isSelected);
                dateEndChooser.setEnabled(!isSelected);
                frequencyText.setEnabled(!isSelected);
                comboFrequency.setEnabled(!isSelected);
                frequencyButton.setSelection(!isSelected);
                timeIntervalButton.setSelection(!isSelected);
            }
 
            public void widgetDefaultSelected(SelectionEvent e) {
                widgetSelected(e);
            }
        });
        Composite propertyComposite = new Composite(groupProperty, SWT.NONE);
        layout = new GridLayout(2, false);
        propertyComposite.setLayout(layout);
        propertyComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
        Label propertyMinLabel = new Label(propertyComposite, SWT.NONE);
        propertyMinLabel
                .setText(AutomatedHistoryMatchMessages.SetLocalWeightWizardPage_label_minimum);
        propertyMinText = new Text(propertyComposite, SWT.FLAT | SWT.BORDER);
        propertyMinText.setData(FormToolkit.KEY_DRAW_BORDER, FormToolkit.TEXT_BORDER);
        propertyMinText.setLayoutData(gridData);
        propertyMinText.setText("" + unitSystem.fromSI(dimension, propertyMin)); //$NON-NLS-1$
 
        Label propertyMaxLabel = new Label(propertyComposite, SWT.NONE);
        propertyMaxLabel
                .setText(AutomatedHistoryMatchMessages.SetLocalWeightWizardPage_label_maximum);
        propertyMaxText = new Text(propertyComposite, SWT.FLAT | SWT.BORDER);
        propertyMaxText.setData(FormToolkit.KEY_DRAW_BORDER, FormToolkit.TEXT_BORDER);
        propertyMaxText.setLayoutData(gridData);
        propertyMaxText.setText("" + unitSystem.fromSI(dimension, propertyMax)); //$NON-NLS-1$
 
        propertyIntervalButton.setSelection(false);
        propertyMinText.setEnabled(false);
        propertyMaxText.setEnabled(false);
 
        setControl(composite);
merci de votre aide