可以通过设置resizable配置选项来调整面板的大小，参见各种选项的文档： http://dev.sencha.com/deploy/ext-4.0.0/docs/api/Ext.panel.Panel.html 。

You can make the panel resizable by setting the 'resizable' config option, see the docs for the various options: http://dev.sencha.com/deploy/ext-4.0.0/docs/api/Ext.panel.Panel.html.

就表单组件的交互方式而言，如果要使用表单布局或切换到hbox / vbox类型的设置，则需要设置锚点具有各种弹性设置。

As far as how the form components interact you'll need to set anchor's if you want to use a form layout or switch to an hbox/vbox type of set-up with various flex settings.