I am trying to add a on click listener to the below tooltip. I do not want the tooltip to display on mouse hover. Instead it need it show on button click. Do I have to add a handler function inside a listener?

{
                    xtype: 'button',
                    cls:'my-btn',
                    iconCls:'question',                     
                    src:'../www/css/slate/btn/question.png',
                    padding: '5 0 0 0',

                    listeners: {


                        render: function(cmp) {
                            Ext.create('Ext.tip.ToolTip', {
                                closable:true,
                                hideDelay : 3000,
                                padding: '0 0 0 0',
                                maxWidth:400,
                                width:800,

                                target: cmp.el,
                                html: "<b>read-only</b>:Users will have read only access to all pages",
                                getTargetXY: function() {
                                    return [810, 340];
                                }
                            });
                        }

                    }


                },