extjs的窗口最大化的问题

Question

我想添加窗口最大化的事件，但不知怎样写，也就是
id:'maximize',
handler: function(e, target, panel){

}
}
中该如何添加事件，在网上查有个maximizable:true属性，但我设置了没什么效果，完整代码如下所示 Ext.onReady(
function(){
var items = [];
var tools = [{
        id:'maximize',
        handler: function(e, target, panel){
panel.ownerCt.maximizable=true;
}
},{
id:'close',
handler: function(e, target, panel){
panel.ownerCt.remove(panel, true);
}
}]; var viewport = new Ext.Viewport({
        items:[{
            xtype:'portal',
            region:'center',
            margins:'35 5 5 0',
            items:[{
                columnWidth:.33,
                style:'padding:10px 0 10px 10px',
maximizable:true,
                items:[{
                    title: 'Panel 2',
                    tools: tools,
                    html: Ext.example.shortBogusMarkup
                },{
                    title: 'Another Panel 2',
                    tools: tools,
                    html: Ext.example.shortBogusMarkup
                }]
            },{
                columnWidth:.33,
                style:'padding:10px',
                items:[{
                    title: 'Panel 3',
                    tools: tools,
                    html: Ext.example.shortBogusMarkup
                },{
                    title: 'Another Panel 3',
                    tools: tools,
                    html: Ext.example.shortBogusMarkup
                }]
            }]
        }]
    });
}
);

Answer 1

我设置其他属性都可以   但就最大化这个属性不行  没效果
MyDesktop.GridWindow13 = Ext.extend(Ext.app.Module, {
    id:'grid-win13',
    init : function(){
        this.launcher = {
            text: '小工具',
            iconCls:'icon-grid',
            handler : this.createWindow,
            scope: this
        }
    },
    createWindow : function(){
        var desktop = this.app.getDesktop();
        var win = desktop.getWindow('grid-win13');
        if(!win){
            win = desktop.createWindow({
                id: 'grid-win13',
                title:'小工具',
                width:512,
                height:384,
                iconCls: 'icon-grid',
                shim:true,
                animCollapse:true,
                constrainHeader:false,
                maximizable:true,//////禁用最大化按钮
                layout: 'fit',
                items:[{             html: "<IFRAME id='schfrm' name='schfrm' target='main' width=100% height=100% SRC = '/msa/desktop/tool/tool.html'  border='0' frameborder='0' scrolling='yes'></iframe>"
                      }]
            });
        }
        win.show();
        win.maxinizable=false;
    }
});

Answer 2

失误 
MyDesktop.GridWindow13 = Ext.extend(Ext.app.Module, {
  id:'grid-win13',
  init : function(){
  this.launcher = {
  text: '小工具',
  iconCls:'icon-grid',
  handler : this.createWindow,
  scope: this
  }
  },
  createWindow : function(){
  var desktop = this.app.getDesktop();
  var win = desktop.getWindow('grid-win13');
  if(!win){
  win = desktop.createWindow({
  id: 'grid-win13',
  title:'小工具',
  width:512,
  height:384,
  iconCls: 'icon-grid',
  shim:true,
  animCollapse:true,
  constrainHeader:false,
  maximizable:false,//////禁用最大化按钮
  layout: 'fit',
  items:[{ html: "<IFRAME id='schfrm' name='schfrm' target='main' width=100% height=100% SRC = '/msa/desktop/tool/tool.html' border='0' frameborder='0' scrolling='yes'></iframe>"
  }]
  });
  }
  win.show();
  }
});