delphi获取图片指定点RGB颜色值，载入一张BMP图像，鼠标单击图像任意处，将获取该处的RGB颜色分量图。任何一种颜色都是由RGB分量值构成，获取这些分量值，就可以改变这些值，从而改变颜色，为程序的进一步处理提供基础保障，获取RGB颜色分量，相关代码如下：
procedure TForm1.SpeedButton1Click(Sender: TObject);
begin
if OpenPictureDialog1.Execute then
begin
image1.Picture.LoadFromFile(OpenPicturedialog1.FileName);
Form1.Canvas.Draw(0,0,image1.Picture.Bitmap);
end;
end;
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002158s ]
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:0.094919s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002422s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002021s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002120s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003651s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002178s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003639s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015068s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002347s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 295868 [ RunTime:0.001169s ]
