好象我搞砸了！实际上它在1.7中确实有效，我的问题是我将config.xml的文件名拼写为confix.xml

Well seems like I messed up! It does in fact work in 1.7, my problem was I had the filename for config.xml spelled confix.xml

一旦我对此进行了调整，自定义布局就会立即弹出！感谢那些参与其中的人.

Once I adjusted that, the custom layout popped right up! Thanks to those that chimed in.