用vc + mapobjects开发的源代码，用鼠标对多边形进行操作，实现了多边形的相交计算功能。-with vc MapObjects development of the source code, using the mouse to operate polygons and achieve the intersection of polygons computing capabilities.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001727s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.115502s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001200s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001964s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001185s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003775s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000981s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003286s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015357s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001365s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 124984 [ RunTime:0.001243s ]
