本例演示：如何依靠图形窗的 UserData 属性传送用户控件的图柄，从而保证回调动作正确执行。-the cases demonstrate : how to rely on the graphics window UserData attributes transmission users control plans handles, callback action so as to ensure correct implementation.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001531s ]
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:0.082876s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001163s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001162s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000967s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003465s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000861s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003852s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015838s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001193s ]
UPDATE `jrk_articles` SET `hits` = 3 WHERE `id` = 4096 [ RunTime:0.012314s ]
