在使用treeData属性的情况下，需要自定义复选框渲染器，以确保复选框的状态正确显示。具体操作如下：

定义自定义渲染器：

function CustomCheckboxRenderer() {}

CustomCheckboxRenderer.prototype.init = function(params) {
  // create input element
  this.eGui = document.createElement('div');
  this.eGui.innerHTML = '';
  this.eInput = this.eGui.querySelector('input');
  this.value = params.value;
  // set checked state based on value
  if (params.value === true) {
    this.eInput.checked = true;
  } else if (params.value === false) {
    this.eInput.checked = false;
  }
  // set indeterminate state
  if (params.node.partiallyChecked) {
    this.eInput.indeterminate = true;
  }
  // add change listener
  var that = this;
  this.eInput.addEventListener('change', function() {
    that.value = this.checked;
    params.node.setDataValue(params.colDef.field, that.value);
    params.api.refreshRows([params.node]);
  });
};
CustomCheckboxRenderer.prototype.getGui = function() {
  return this.eGui;
};
CustomCheckboxRenderer.prototype.afterGuiAttached = function() {
  this.eInput.focus();
};
CustomCheckboxRenderer.prototype.getValue = function() {
  return this.value;
};
CustomCheckboxRenderer.prototype.isPopup = function() {
  return false;
};

设置树形数据属性和复选框渲染器：

var gridOptions = {
  columnDefs: [
    { field: 'name' },
    {
      field: 'checkbox',
      cellRenderer: 'customCheckboxRenderer',
      editable: true
    }
  ],
  defaultColDef: {
    editable: true
  },
  treeData: true,
  animateRows: true,
  rowData: [
    {
      name: 'Row 1',
      checkbox: false,
      __children: [
        {
          name: 'Child 1-1',
          checkbox: true,
          __children: []
        },
        {
          name: 'Child 1-2',
          checkbox: false