EXTJS，应用布局时出现问题

Question

当我使用列布局时，看不到我的 labelFields我的字段在 cols 中，但没有标签

var familyNameTextField = new Ext.form.TextField({
        fieldLabel : 'Ville',
        allowBlank:false,
        id : 'familyName'
    });
    var myData = [['EDF','EDF'],['GDF','GDF']];

    //The text field for the First Name
    var firstNameTextField = new Ext.form.ComboBox({
        fieldLabel: 'State',
        hiddenName:'state',
        store: new Ext.data.ArrayStore({
            fields: ['abbr', 'state'],
            data : myData // from states.js
        }),
        valueField:'abbr',
        displayField:'state',
        typeAhead: true,
        mode: 'local',
        triggerAction: 'all',
        emptyText:'Select a state...',
        selectOnFocus:true,
        width:190
    });
    //The text field for the First Name
    var demarcheField = new Ext.form.TextField({
        fieldLabel : 'Démarche',
        allowBlank:false,
        id : 'demarche'
    });
    //Button to show the MessageBox
    var showMessageBoxBouton = new Ext.Button({
        text:'Say Hello',
        handler:showMessageBox //The function that will be called when the button is clicked
    });
    //The form that will contain all our components
    var myForm = new Ext.FormPanel({
        labelWidth: 115,
        frame:true,
        title: 'Personal informations',
        bodyStyle:'padding:5px 5px 0',
        width: 900,
        autoScroll:true,
        layout:'column',
        items: [{
                items:[
                    familyNameTextField
                ]
            },
            {
                items:[firstNameTextField]
            },
            {
                items:[demarcheField]
            },
            {
                items:[showMessageBoxBouton]
            }           
        ]
    });

Answer 1

您看不到标签，因为您将 FormPanel 的默认布局 - FormLayout - 替换为 ColumnLayout。

来自 FormPanel 文档:

By default, FormPanel is configured with layout:'form' to use an Ext.layout.FormLayout layout manager, which styles and renders fields and labels correctly. When nesting additional Containers within a FormPanel, you should ensure that any descendant Containers which host input Fields use the Ext.layout.FormLayout layout manager.

因此，在列布局中嵌套带有 layout:'form' 的容器，您将看到标签