要捕获列标题检查更改事件，您需要侦听'headercheckchange'：

var store = Ext.create('Ext.data.Store', {
    fields: ['name', 'email', 'phone', 'active'],
    data: [{
        name: 'Lisa',
        email: 'lisa@simpsons.com',
        phone: '555-111-1224',
        active: true
    }, {
        name: 'Bart',
        email: 'bart@simpsons.com',
        phone: '555-222-1234',
        active: true
    }, {
        name: 'Homer',
        email: 'homer@simpsons.com',
        phone: '555-222-1244',
        active: false
    }, {
        name: 'Marge',
        email: 'marge@simpsons.com',
        phone: '555-222-1254',
        active: true
    }]
});

Ext.create('Ext.grid.Panel', {
    title: 'Simpsons',
    height: 200,
    width: 400,
    renderTo: Ext.getBody(),
    store: store,
    columns: [{
        text: 'Name',
        dataIndex: 'name'
    }, {
        text: 'Email',
        dataIndex: 'email',
        flex: 1
    }, {
        text: 'Phone',
        dataIndex: 'phone'
    }, {
        xtype: 'checkcolumn',
        headerCheckbox: true,
        text: 'Active',
        dataIndex: 'active',
        listeners: {
            headercheckchange: function(checkColumn, checked) {
                console.log("Header Checkbox change event: ", checked);
            },
            checkchange: function(checkboxColumn, rowIndex, checked, record, e, eOpts ) {
                console.log("Grid body column checkbox change event: ", rowIndex, checked, record);
            }
        }
    }]
});