It's hard to make screenshots for libraries and frameworks ;-)

To show something presentable, i've included a screenshoot of the CUF sample application:

The following two pictures show the CSV sample app, the app exists as a CUF/Swing and CUF/JavaFX example:

Describing windows with XML

The main application window (everything but the use case area on the right side) is described with the following XML:

<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE xml2swing SYSTEM "http://www.sdm.com/dtd/xml2swing-1.3.dtd">

<xml2swing>
    <nonvisual>
        <object id="PortalPc"   class="com.sdm.cufexamples.model.portal.PortalPc"/>
        <object id="AboutDc"    class="com.sdm.cufexamples.model.portal.AboutDc"/>
        <object id="AboutPc"    class="com.sdm.cufexamples.model.portal.AboutPc"/>

        <action id="FileQuit">
            <text>Quit</text>
            <tooltip>Quit the applicatoin.</tooltip>
            <mnemonic>Q</mnemonic>
            <accelerator>control Q</accelerator>
            <text lang="de">Beenden</text>
            <tooltip lang="de">Anwendung verlassen.</tooltip>
            <mnemonic lang="de" >B</mnemonic>
        </action>

        <action id="WindowNew">
            <text>New Window</text>
            <tooltip>Creates a new main window.</tooltip>
            <mnemonic>N</mnemonic>
            <text lang="de">Neues Fenster</text>
            <tooltip lang="de">Erzeugt ein neues Hauptfenster.</tooltip>
            <mnemonic lang="de">N</mnemonic>
        </action>

        <action id="AboutClose">
            <text>OK</text>
        </action>
    </nonvisual>

    <visual>
        <frame id="Frame" closeAction="FileQuit">
            <icon name="CUF"/>
            <title>Test ValueModel's</title>

            <menubar id="MenuBar">
                <menu id="File">
                    <text>File</text>
                    <mnemonic>F</mnemonic>
                    <text lang="de">Datei</text>
                    <mnemonic lang="de">D</mnemonic>
                    <menuitem actionref="FileQuit"/>
                    <separator/>
                </menu>
                <menu id="Window">
                    <text>Window</text>
                    <mnemonic>W</mnemonic>
                    <text lang="de">Fenster</text>
                    <mnemonic lang="de">F</mnemonic>
                    <menuitem actionref="WindowNew"/>
                    <menuitem id="About">
                        <text>About</text>
                        <mnemonic>A</mnemonic>
                        <text lang="de">Über</text>
                        <mnemonic lang="de">Ü</mnemonic>
                    </menuitem>
                    <separator/>
                </menu>
            </menubar>

            <toolbar id="Toolbar">
            </toolbar>

            <panel id="Panel">
                <layoutmanager type="form">
                    <columns>pref, fill:pref:grow</columns>
                    <rows>fill:pref:grow, pref</rows>
                </layoutmanager>

                <scrollpane id="UCScrollPane" verticalScrollBar="asNeeded"
                                              horizontalScrollBar="never" >
                     <!-- Note: we added a hack in PortalPc that asNeeded works (no
                                layout changes after the first click) -->
                    <constraint>1,1,F,F</constraint>
                    <panel id="UCSelectPanel" />
                </scrollpane>

                <panel id="SubDialogPanel">
                    <constraint>2,1</constraint>
                    <layoutmanager type="grid">
                        <rows>1</rows>
                        <columns>1</columns>
                    </layoutmanager>
                </panel>

                <panel id="Status">
                    <constraint>1,2,2,1</constraint>
                    <border type="bevel"/>
                    <layoutmanager type="table">
                        <columns>4,preferred,4,fill,4</columns>
                        <rows>4,preferred,4</rows>
                    </layoutmanager>
                    <label>
                        <constraint>1,1</constraint>
                        <text>Status:</text>
                    </label>
                    <label id="StatusText">
                        <constraint>3,1</constraint>
                    </label>
                </panel>
            </panel>

            <dialog id="AboutDialog" escapeAction="AboutClose" default="Frame/AboutDialog/Panel/OK" modal="true">
                <panel id="Panel">
                    <border type="empty"><dlu>dialog</dlu></border>
                    <layoutmanager type="form">
                        <columns>pref:grow, 60dlu</columns>
                        <rows>pref, 7dlu, pref:grow</rows>
                    </layoutmanager>
                    <label>
                        <text>This is an About dialog</text>
                        <text lang="de">Dies ist ein About-Dialog</text>
                        <constraint>1,1,2,1</constraint>
                    </label>
                    <button actionref="AboutClose" id="OK">
                        <constraint>2,3,F,B</constraint>
                    </button>
                </panel>
            </dialog>
        </frame>
    </visual>

    <connect>
        <actionAction source="FileQuit"                     target="PortalDc"   method="quit"/>
        <actionAction source="WindowNew"                    target="PortalDc"   method="newWindow"/>
        <actionAction source="Frame/MenuBar/Window/About"   target="PortalDc"   method="about"/>
        <actionAction source="AboutClose"                   target="AboutDc"    method="close"/>
    </connect>

    <databinding>
        <!-- some test stuff that is not really needed in the example, but i need a place to test it ;-) -->
        <valueholder id="testSet"/>
        <setvalue modelref="testSet" class="java.lang.String"/>
        <setvalue modelref="testSet">Hallo Welt</setvalue>
        <typeconverter   id="testtype"   trigger="testSet" class="com.sdm.util.model.converter.IntegerStringConverter"/>
        <formatconverter id="testformat" trigger="testSet" class="java.text.DecimalFormat" format="######,####" />
    </databinding>

</xml2swing>