Delphi 模拟Windows “显示桌面”功能，对于功能就不再详述了，单击后，会看到Windows桌面，具体的实现方法也挺简单的，下面几行代码就搞定了：
if IsWindowVisible(h) then
PostMessage(h, WM_SYSCOMMAND, SC_MINIMIZE, 0);
h := GetNextWindow(h, GW_HWNDNEXT);
完整的可编译源码请你下载源码包吧。
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001305s ]
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:0.090315s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001270s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001955s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001276s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003797s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001112s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003289s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015247s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001435s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 294329 [ RunTime:0.001290s ]
