我编写如下dll
library TestDll;uses
  SysUtils,
  Classes;{$R *.RES}procedure InitialTCom; stdcall;
begin
  ....
end;procedure DestroyTCom;stdcall;
begin
  ...
end;exports
  InitialTCom; 
  DestroyTCom;
  
begin
end.为什么编译时总是报错?