L lordofbinladen Unregistered / Unconfirmed GUEST, unregistred user! 2005-01-27 #1 with ActiveMDIChild.Controls[0] as TDxDemo do 为什么会出现Undeclared identifier : 'TDxDemo'?
L lordofbinladen Unregistered / Unconfirmed GUEST, unregistred user! 2005-01-27 #2 with ActiveMDIChild.Controls[0] as TDxDemo do 为什么会出现Undeclared identifier : 'TDxDemo'?
X xuegaoyili Unregistered / Unconfirmed GUEST, unregistred user! 2005-01-27 #3 那是因为你的那个包含这个类的单元文件没有被引用。。
M missinwind Unregistered / Unconfirmed GUEST, unregistred user! 2005-01-27 #4 要先在uses中引用包含TDxDemo的单元文件。