public abstract class WizardPage extends Dialog {
    // ...

    public String getMessage() {
        return getDescription();
    }

    /**
     * Returns the <tt>Image</tt> instance associated to the description or
     * message displayed the wizard's title dialog area.
     *
     * This image is stored in the third Label widget (cf.
     * <tt>TitleAreaDialog.messageImageLabel</tt> initialization in
     * <tt>org.eclipse.jface.dialogs.TitleAreaDialog.createTitleArea(Composite)</tt>
     * ).
     *
     */
    protected Image getMessageImage() {
        final Label label = getTopLevelCompositeChild(Label.class, 2);
        return UIThreadRunnable.syncExec(getShell().display, new Result<Image>() {

            public Image run() {
                return label.getImage();
            }
        });
    }

    /**

     * Returns the wizard's description or message displayed in its title dialog
     * area.
     *
     * A wizard's description or message is stored in the very first Text widget
     * (cf. <tt>TitleAreaDialog.messageLabel</tt> initialization in
     * <tt>org.eclipse.jface.dialogs.TitleAreaDialog.createTitleArea(Composite)</tt>
     * ).
     *
     */
    public String getDescription() {
        final Text text = getTopLevelCompositeChild(Text.class, 0);
        return UIThreadRunnable.syncExec(getShell().display, new Result<String>() {

            public String run() {
                return text.getText();
            }
        });
    }

    private <T extends Widget> T getTopLevelCompositeChild(final Class<T> clazz, final int index) {
        final SWTBotShell shell = getShell();
        return UIThreadRunnable.syncExec(shell.display, new Result<T>() {

            @SuppressWarnings("unchecked")
            public T run() {
                for (Control control : shell.widget.getChildren()) {
                    if (control instanceof Composite) {
                        Composite composite = (Composite) control;
                        int counter = 0;
                        for (Control child : composite.getChildren()) {
                            if (clazz.isInstance(child)) {
                                if (counter == index) {
                                    return (T) child;
                                }
                                ++counter;
                            }
                        }
                    }
                }
                return null;
            }
        });
    }

    protected SWTBotShell getShell() {
        // This member is initialized within my WizardPage constructor by the below code
        // shell = getWorkbench().activateShell(title);
        // Where 'title' is the title of the wizard.
        return shell;
    }
    

    // ...
}