实现了树形控件，并能在控件上右击，弹出菜单，进而实现树形控件的增加、删除。适合队树形控件的初学者-Realized the tree control, and can control on the right-click, pop-up menu, and proceed to realize the tree controls to add, delete. Suitable for beginners team tree control
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001296s ]
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:0.096857s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001391s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001997s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001259s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003602s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001084s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003184s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015263s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001437s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 164441 [ RunTime:0.001329s ]
