<customUI xmlns="http://schemas.microsoft.com/office/2006/01/customui" onLoad="OnAddinLoad">
    <ribbon startFromScratch="false">
        <tabs>
            <tab id="helloWorldTab" label="Hello World">
                <group id="helloWorldGroup" label="调试示例">
                    <button id="btnHelloWorld" label="插入 Hello World" onAction="OnAction" getImage="GetImage" visible="true" size="large"/>
                    <button id="btnShowTaskPane" label="打开任务窗格" onAction="OnAction" getImage="GetImage" visible="true" size="large"/>
                </group>
            </tab>
        </tabs>
    </ribbon>
</customUI>
