使用Ext.Window时出现No center region defined in BorderLayout错误的愿原因

在往window中添加element的时候,需要给element指定region

比如

form = new Ext.FormPanel({
labelWidth: 80, // label settings here cascade unless overridden
url:'ext_partnerprofile.php?method=set',
frame:true,
title: 'Add a New Partner Profile',
bodyStyle:'padding:5px 5px 0',
width: 300,
defaults: {width: 150},
defaultType: 'textfield',
region:'center' ,

.....

});