table content not displayed

[yangweijie]

// 表格控件组
        $tableGroup = Group::create("进程表格 (libui Table)");
        Group::setMargined($tableGroup, true);
        Box::append($container, $tableGroup, true);
        
        $tableBox = Box::newVerticalBox();
        Box::setPadded($tableBox, true);
        Group::setChild($tableGroup, $tableBox);
        
        try {
            // 创建表格模型处理器
            $handler = \Kingbes\Libui\Base::ffi()->new("uiTableModelHandler");
            
            // 定义回调函数
            $numColumnsFunc = function($h, $m) {
                return 4; // ID, PID, User, Command
            };
            
            $columnTypeFunc = function($h, $m, $column) {
                // 所有列都使用字符串类型
                return TableValueType::String->value;
            };
            
            $numRowsFunc = function($h, $m) {
                return 3; // 固定3行数据
            };
            
            $cellValueFunc = function($h, $m, $row, $column) {
                // 模拟数据
                $mockData = [
                    ['1', '1234', 'root', '/usr/bin/systemd'],
                    ['2', '5678', 'www-data', 'nginx: worker process'],
                    ['3', '9012', 'mysql', '/usr/sbin/mysqld']
                ];
                
                // 确保行索引不超出范围
                $rowIndex = min($row, count($mockData) - 1);
                
                // 返回对应单元格的数据
                if (isset($mockData[$rowIndex][$column])) {
                    return Table::createValueStr($mockData[$rowIndex][$column]);
                }
                
                return Table::createValueStr('');
            };
            
            $setCellValueFunc = function($h, $m, $row, $column, $value) {
                // 简单的设置处理
                return 0;
            };

            // 设置回调函数
            $handler->NumColumns = $numColumnsFunc;
            $handler->ColumnType = $columnTypeFunc;
            $handler->NumRows = $numRowsFunc;
            $handler->CellValue = $cellValueFunc;
            $handler->SetCellValue = $setCellValueFunc;

            // 创建文本列参数
            $textParams = \Kingbes\Libui\Base::ffi()->new("uiTableTextColumnOptionalParams");
            $textParamsPtr = \FFI::addr($textParams);

            // 创建表格模型
            $model = Table::createModel(\FFI::addr($handler));

            // 创建表格参数
            $params = \Kingbes\Libui\Base::ffi()->new("uiTableParams");
            $params->Model = $model;
            $params->RowBackgroundColorModelColumn = -1;

            // 创建表格
            $table = Table::create($params);

            // 添加列
            Table::appendTextColumn($table, "ID", 0, -1, $textParamsPtr);
            Table::appendTextColumn($table, "PID", 1, -1, $textParamsPtr);
            Table::appendTextColumn($table, "User", 2, -1, $textParamsPtr);
            Table::appendTextColumn($table, "Command", 3, -1, $textParamsPtr);

            // 将表格添加到容器
            Box::append($tableBox, $table, true);
            
            // 添加说明标签
            $infoLabel = Label::create("这是简单的表格示例 - 显示ID、PID、User、Command四列");
            Box::append($tableBox, $infoLabel, false);
            
        } catch (\Exception $e) {
            // 如果表格创建失败，显示错误信息
            $errorLabel = Label::create("表格创建失败: " . $e->getMessage());
            Box::append($tableBox, $errorLabel, false);
        }

经过ai 尝试，不管普通表格还是 带复选框的表格， 添加数据后，文本列 不显示内容。请给出表格正确用法。