render() {
        return <div className="container-fluid">
            <FlexGrid itemsSource={this.state.data} loadingRows={(s, e) => this.hdrTips.dispose()} formatItem={(s, e) => {
            if (e.panel == s.columnHeaders) {
                this.hdrTips.setTooltip(e.cell, 'this is column<br/>' +
                    '<span class="col-header">' + e.getColumn().header + '</span>');
            } else if(e.panel === s.cells){
            } this.hdrTips.setTooltip(e.cell, 'this is cell area<br/>')}}/>
        </div>;
    }