多选下拉框三角trigger

frontend/saas-web/app/view/core/form/MultiCombo.js

@@ -6,6 +6,7 @@ Ext.define('saas.view.core.form.MultiCombo', {
     alias: 'widget.multicombo',
     editable : false,
     matchFieldWidth: true,
+    triggerCls:'x-form-trigger',
     value: [],
     cachedConfig: {
         menuAlign: 'tl-bl?',