Hi, George and Larry
Thanks your reply. In my case, I need a new type of form class, which need to redefine the dataenvironment properties such as autoopen/closetables and some other methods to add some functions of checking user rights at data loading section. But after serval tries, I have to give it up. Now I've written a program to modify every scx files to change the dataenvironment properties and methods into the way I wanna it to be. Maybe it's a stupid solution, anyway it works and seems very easy. But I still wanna know if there is a good solution.:)