比较简单的导出Excel饼图，导出后分别建两个表，一个表数据，一个表二维图。只合适刚刚接触delphi用到导出Exceld的程序员(Relatively simple export Excel pie chart, after the export were built two tables, a table data, a table two dimensional map. Only suitable for those who have just contacted Delphi for exporting Exceld)