通过Ext.panel.Panel的tools配置项来设置Ext.panel.Tool实例。 要注意的一点是，Ext框架提供的Ext.panel.Tool仅包含按钮图标而具体的点击事件处理函数需要我们自定义。

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var panel1 = Ext.create( 'Ext.panel.Panel' , {      width: 500 ,      renderTo: 'ext4-panel-tools' ,      html: html,      title: 'Tools - Header' ,      tools: [{          type: 'close' ,          handler: function(){} //some logic inside handler      },{          type: 'collapse' ,          handler: function(){} //some logic inside handler      },{          type: 'down' ,          handler: function(){} //some logic inside handler      },{          type: 'expand' ,          handler: function(){} //some logic inside handler      },{          type: 'gear' ,          handler: function(){} //some logic inside handler      },{          type: 'help' ,          handler: function(){} //some logic inside handler      },{          type: 'left' ,          handler: function(){} //some logic inside handler      },{          type: 'maximize' ,          handler: function(){} //some logic inside handler      },{          type: 'minimize' ,          handler: function(){} //some logic inside handler      },{          type: 'minus' ,          handler: function(){} //some logic inside handler      },{          type: 'next' ,          handler: function(){} //some logic inside handler      },{          type: 'pin' ,          handler: function(){} //some logic inside handler      },{          type: 'plus' ,          handler: function(){} //some logic inside handler      },{          type: 'prev' ,          handler: function(){} //some logic inside handler      },{          type: 'print' ,          handler: function(){} //some logic inside handler      },{          type: 'refresh' ,          itemId: "refresh" ,          hidden: true ,          handler: function(){} //some logic inside handler      },{          type: 'restore' ,          handler: function(){} //some logic inside handler      },{          type: 'right' ,          handler: function(){} //some logic inside handler      },{          type: 'save' ,          handler: function(){} //some logic inside handler      },{          type: 'toggle' ,          handler: function(){} //some logic inside handler      },{          type: 'unpin' ,          handler: function(){} //some logic inside handler      },{          type: 'up' ,             handler: function(){} //some logic inside handler      },{          type: "search" ,          handler: function(event, target, owner, tool){                      // do search                      owner.child( '#refresh' ).show();          }      }] });