Extjs Toolbar 当做弹出菜单

                            menuAlign: 'tl-tr',

                            listeners: {

                                mouseover: function(btn) {

                                   btn.toolb.showBy(btn,btn.menuAlign);

                                }

                            },

                            //handler: Ext.bind(me.onItemclick, me),

                            toolb : Ext.create('Ext.toolbar.Toolbar', {

                                floating: true,

                                dock: 'left',

                                defaults: {

                                    scale: 'medium',

                                    iconAlign: 'left',

                                    textAlign: 'left'

                                },

                                items: [{

                                    text: 'regular item 1',

                                    iconCls: 'menu_system_user_24',

                                    width: 170

                                },'-',{

                                    text: 'regular item 2',

                                    iconCls: 'menu_system_user_24'

                                },'-',{

                                    text: 'regular item 3',

                                    iconCls: 'menu_system_user_24'

                                }]

                            })